Gnostice Document Studio .NET 2025 R1
Xamarin, WinForms, WPF & ASP.NET components to view/print/convert word, spreadsheet, HTML, PDF & image formats

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Version 2025 R1 - April 28, 2025

Version 2024 R1 - July 4, 2024

• Important
• Removed the setting “DBCleanupRetentionSize” from the Web.config of ASP.NET Document Viewer, since this setting was never implemented
• Updated the following dependent package versions due to vulnerabilities
• SkiaSharp from 2.88.3 to 2.88.7
• SkiaSharp.Views from 2.88.3 to 2.88.7
  
• SkiaSharp.Views.Forms from 2.88.3 to 2.88.7
  
• System.Security.Cryptography.Pkcs from 6.0.1 to 6.0.4
  
• Microsoft.Windows.Compatibility from 6.0.0 to 6.0.7
• Enhanced
• ASP.NET Document Viewer
  
• Introduced 'MemoryCleanupRetentionTime' setting to cleanup server memory after a session has been idle for this length of time
  
• Improved the speed and responsiveness of the zoom and page rotation functions
  
• Reduced the number of requests sent to the server when the user is fast-scrolling, thereby improving the viewing experience
• PDF Engine
• Added FormattedText and FormattedTextCharBoundingRects properties to PDFPageTextElement to get spaced-out text based on relative position between words
  
• Documentation
• Added topic for localizing the ASP.NET Document Viewer
  
• Added FAQ entry for steps to enable logging in the ASP.NET Document Viewer
  
• Fixed
• ASP.NET Document Viewer
• Keyboard tab key navigation does not work
  
• Keyboard enter and space-bar keys do not invoke the menu items
  
• Some mouse interactive elements do not have an associated accessibility label
  
• Sometimes the zoom drop down selection does not work
  
• Too many unnecessary requests are sent to the server
  
• Many messages are not being properly localized
  
• Database not being cleaned up when using the database caching mechanism to store document information
  
• Desktop Document Viewers
• Keyboard and some mouse events are not being fired on the WinForms document viewer control
  
• Viewer hangs when attempting to view a PDF file that contains multiple char spacing values in the TJ operand
  
• The WPF document viewer crashes when maximizing the window after clicking on a bookmark
  
• The cursor jumps when moving the mouse away from the document viewing area in panning mode in the WPF document viewer
  
• Bookmark navigation pane is not shown when a PDF with bookmarks is opened in the WPF document viewer
  
• PDF Engine
• Very slow rendering of PDF file containing a corrupted CFF font stream
  
• Missing word spacing when extracting text from PDF
  
• If the font is a CIDKeyed font, when an outline is requested using its glyphID then look up the outline data using the default encoding table, otherwise loop up using GlyphIDToGlyphNameDict
  
• A PDF containing an image with a 1-BPC soft mask is not being rendered correctly
  Form field values are not being shown when viewing a PDF file on a device set to German regional settings
  
• Word Engine
• Viewer hangs when viewing a DOCX file containing a textbox
  
• Viewer hangs when attempting to view a DOC file that contains a paragraph without an explicit para-before spacing
  
• Sometimes content inside a textbox would be truncated when viewing a DOCX file
  
• Textbox is not positioned correctly when viewing a DOCX file
  
• Text overlapping when viewing DOCX file containing a table with vertically merged cells
  
• Font Engine
• Font cache creation is aborted if any font file fails to be processed
  

Version 2023 R2 - December 12, 2023

• Fixed
• ASP.NET Document Viewer
• File not found exception is thrown when attempting to run the Gnostice controls (document viewer or document converter) on ASP.NET core hosted on Azure.
  
• Resetting form fields also resets read-only fields.
  
• Resetting form fields is not recalculating the auto-calculated values.
  
• Clicking on a radio button is not resetting the form fields.
  
• Currency symbol not being displayed correctly in text field
  
• The 'download as' PDF feature is not working when the document type is PDF.
  
• Reduced the number of page images being retrieved from the server.
  
• Desktop Viewers
• The PrintDocument API of WinForms DocumentViewer control ignores the pageRange parameter.
• Document Converter
• Images overlap when converting from PDF to HTML.
  
• PDF Engine
• A PDF form field containing an empty /CA value is not being displayed when viewing the PDF file on ASP.NET document viewer.
  
• The size of the text of text form fields are not as expected in the output document when the document with form fields are updated.
  
• Text not appearing when viewing PDF file containing Type1 font.
  
• The size of the text of form fields are not rendered as expected when the font resource specified in the /DA entry of the form field is not available in the Default Resources (/DR entry) dictionary of AcroForm in the document.
  
• After updating the form fields in a document the font resources of the form fields are changed with the default Helvetica font when the document does not contain the specified font resource either in the DR dictionary of form field dictionary or in the DR entry or AcroForm dictionary, though it is available in the resources dictionary of Normal Appearance stream of the field.
  
• Throws StackOverflow error while rendering PDF documents that contain Inline images inside Form /XObject resources.
  
• Sometimes black patches are seen when viewing a PDF file.
  
• Word Engine
• Tables present in documents used as alternate content are not appearing in the output when converting from DOCX to image.
  
• Middle and bottom aligned text inside a textbox is not being positioned correctly when converting from DOCX to image.
  
• Some textboxes and images not rendering correctly when viewing a DOCX file.
  
• Insufficient spacing between the inner top of table cell and its contents when viewing Word format files.
  
• Paragraph property "keepNext" not being supported when rendering DOCX files
  
• Embedded image not showing correctly when viewing a DOC file.
  
• Text and image overlap when viewing a DOCX file.
  
• Image Engine
• IndexOutOfRangeException being thrown when attempting to view a PDF file containing JBIG2 images.
  
• Installer
• File in use error is sometimes thrown when attempting to install the product.
  

Version 2023 R1 - July 3, 2023

• Important
• From this release onward .NET Framework 4.5 is not supported anymore. The lowest supported version is .NET Framework 4.6.2.
• For the ASP.NET Document Viewer, jQuery and jQueryUI asset files are no longer packaged with the product. Instead, they are pulled in via the jQuery NuGet package. Due to this the JS and CSS include locations have changed. For more information please see the Getting Started section of the Developer Guide.
• Updated the following dependent packages
• DotNetZip to version 1.16.0
• AngleSharp to version 0.16.1, AngleSharp.Css to version 0.16.4
• log4net to version 2.0.15
• SkiaSharp to version 2.88.3
• Newtonsoft.Json to version 13.0.3
• Xamarin.Forms version 4.8.0.1821
• Updated Tesseract and trained data to version 4.1.1
  
• Enhanced
• Document Manager
• Added a new LoadDocument API overload that can load a document from a URI.
• PDF Engine
• Full PDF functionality now available across all platforms (.NET Framework 4.6.2+ and .NET Core/5/6/7)
  
• Reduce loading time of PDF files by optimizing the reading of "unknown" objects.
• Support for conversion to PDF with the PDF text elements written using the equivalent fonts that are used in the source documents on non-Windows platforms, provided that the equivalent fonts are available in the target platform.
• Image Engine
• Added setting TIFFEncoderSettings.ColorDepth to set the color depth when converting to TIFF image format.
• Documentation
• Several topics related to ASP.NET document viewer were rewritten or edited in the developer guide. Other minor updates to other topics.
• Licensing
• Allow usage of both "gnlicense_key.txt" and "gnlicense_key" file for provisioning runtime license.
  
• Fixed
• ASP.NET Document Viewer
• Simultaneous requests from multiple user sessions can sometimes cause interference leading to incorrect document updates.
• Throws NRE sometimes when viewing a list of documents in the ASP.NET document viewer.
• The digital signature of a signed PDF is lost when the PDF is downloaded without any modifications done on the viewer.
• Download fails to work after a Download-as operation is performed.
  
• Printing does not work after about 30 minutes of inactivity.
• Printing PDF with form fields produces a blank page in the print output when using database caching.
• Desktop Viewers
• WPF DocumentViewer control is not being garbage collected.
  
• An extra empty page is shown sometimes when viewing image files.
• Clicking on the thumbnail page does not show it on the main view sometimes in the WinForms document viewer.
• Non-continuous scroll mode does not work as expected in the WinForms document viewer.
• Document Converter
• Throws NRE when attempting to convert any document to BMP image stream.
• Throws NRE when converting from XLSX file to TXT file.
• PDF Engine
• Solid line being drawn as a dashed line when viewing PDF file.
• Throws NRE while converting from PDF to PDF when the PDF contains attachments.
• Program hangs when attempting to merge a PDF file containing an outline with another PDF file.
• Throws System.FormatException when trying to view a malformed PDF. The PDF defines a tiling pattern, but the stream is much shorter than what the /Length entry specifies. And the "endstream" marker is misspelled as "endsteam".
• Incorrect creation of the final stroke of the graphics path when creating the glyphs of TrueType fonts.
• Throws NRE when attempting to view an XLSX file in WinForms document viewer.
• Black patches being shown when viewing a PDF file containing JPEG2000 images.
• PDF file containing invalid creation date fails to load.
• Logo image not being shown when viewing a PDF file. The image contains a soft mask whose size is larger than the base image.
• Text is being rendered with very thick strokes when viewing a PDF file where the font size is small and the canvas has a large zoom.
• Images encoded as indexed CMYK and having a soft mask are not being displayed correctly when viewing the PDF file.
• Throws System.FormatException when trying to convert a PDF to image, where the PDF contains a dictionary inside a content stream.
• Throws NRE when saving a PDF file containing bookmarks and the bookmark is missing the color (/C) entry.
• Incorrect font is sometimes used when rendering text form field values.
• Throws NRE when re-saving a PDF file if the file ID entry was missing in the encryption dictionary.
• Text redaction can sometimes fail to redact text present inside a PDF file due to the redaction region being corrupted when operating on it.
• Throws CryptographicException when trying to load an encrypted PDF document where the metadata stream is not encrypted.
• Inline image not appearing in output when the PDF file is printed. The inline image uses a color space that is defined in the page resources dictionary.
• Throws StackOverflowException when reading a large PDF file containing an unusually large dictionary object (dictionary size of about 5 MB).
• Throws IndexOutOfRangeException while rendering PDF documents with form fields when the NeedAppearances flag is true in the AcroForms dictionary.
• Updating of form field values in the document corrupts /DA entry of the form fields which lead to rendering of form field values with an unexpected font and font size.
• Throws ArrayOutOfRange exception while rendering PDF documents that contain multi-line form fields.
• Spreadsheet Engine
• Prefer non-exponent notation when rendering numbers in spreadsheets.
• Digitization
• Incorrect placement of invisible text when converting from image or scanned PDF to searchable PDF and the scaling image enhancement technique is used with a non unity scale factor.
• Licensing
• Trail popup is being shown during design-time for a paid license installation when building for .NET 5/6/7 or ASP.NET Core.
• Trial mark being shown in Azure Functions even after runtime license is embedded (.NET 6).
  

Version 2022 R2 - August 16, 2022

• Enhanced
• PDF Engine
• Optimized memory usage during parsing and rendering of RGB image streams where a soft mask or a color key mask is present.
• Images present in PDF files are now cached in memory to increase the page rendering speed on the desktop document viewers.
• Optimization to read image objects only once instead of twice resulting in a small speed up.
• Desktop Document Viewers (WinForms and WPF)
• Optimized memory usage by discarding high resolution tiles when panning beyond the buffered region.
• Fixed
• ASP.NET Document Viewer
• Viewing not working correctly when multiple instances present on the same page.
• Desktop Document Viewers (WinForms and WPF)
• NRE is sometimes thrown when switching between documents.
• NRE is thrown if the CloseDocument API is called multiple times.
• Potential memory leak due to events not being unregistered when the viewing session is closed.
• Flickering of the navigation pane when the WPF viewer opens with the navigation pane disabled.
• Page contents truncated when printing a document from the WinForms Document Viewer control.
• PDF Engine
• Indexed color space image present in PDF not being displayed correctly when the color palette is encoded as a byte string.
• Potential memory leak due to the pages buffer not being disposed when the document is closed.
• KeyNotFoundException thrown when trying to convert a PDF file to images.
• Word Engine
• Invalid parameter exception thrown when trying to view a DOCX file containing images in .NET 5.
• When viewing a DOCX file containing a floating table in the header the main body contents overlaps with the header.
• Licensing
• Printing fails with FeatureNotLicensedException in the Free edition when targeting .NET 6 (Windows).
  

Version 2022 R1 - July 2, 2022

Version 2021 R1 - February 3, 2021

• Enhanced
• ASP.NET Document Viewer
• Signing PDF documents using hand-written signatures.
• Allow users to draw a signature on a signature dialog box.
• Allow users to load a signature file from disk.
  
• Allow users to save drawn or uploaded signatures to the signature pane.
• Allow users to delete signatures from already listed signatures in the signature pane.
  
• Allow users to drag and resize the signature field placed on the document.
• Allow users to delete the signature field placed on the document.
• Server-side APIs:
• Introduced "ViewerPreferences.Interactivity.AllowSigning" API.
• Introduced "NeedUserSignatures" override method on "ServerEventsHandler" class to configure user’s signatures that will be populated on the signature dialog box in the document viewer.
• Client-side APIs:
• Introduced "showStatusNotifications" property on "Preferences" to enable display of status notification. 
  
• Introduced "Preferences.interactiveElements.signatures" API for setting signature preferences.
  
• Preferences.interactiveElements.signatures.strokeColor
• Preferences.interactiveElements.signatures.strokeWidth
• Preferences.interactiveElements.signatures.allowSavingSignatures
• Preferences.interactiveElements.signatures.maxNumberOfSavedSignatures
• Preferences.interactiveElements.signatures.showSavePrompt
• Introduced "documentViewer.Signatures.getAll()" method to get all signature fields added in the currently loaded PDF document.
• Introduced "documentViewer.Signatures.get()" method to get a signature field matching the given signature id.
  
• Introduced "documentViewer.Signatures.addPlaceholder()" method to add signature placeholders to a loaded PDF document.
• Events:
• Introduced "onSignaturePlaced" event which fires when the user has drawn a signature and placed it on the document.
• Introduced "beforeSignatureNeededPrompt" event which fires when the user tries to save the document without providing the required signatures.
• Introduced "beforeSend" parameter to "beforeDocumentUpload" event to customise headers of the post request.
  
• Desktop and Mobile Document Viewers (WinForms, WPF and Xamarin)
• Introduced API "GetSelectedText" to get the user selected text.
• Introduced events "OnTextSelection" and "OnSelectionCleared" to notify selection of text.
• Optimized page layout calculation and ability to abort page image request for a better viewing experience.
  
• Document Converter
• Added support for handling of vertical text in word documents while converting to PDF.
  
• Document Engines
• Cache text size measurements for speeding up document rendering.
• Word Engines
• Added support for top to bottom, right to left and bottom to top, left to right text directions in table cells.
• Added support for reading and rendering footnotes and endnotes present in DOCX files.
• PDF Engine
• Improve fault tolerance logic to load corrupted PDF files where the startxref offset is incorrectly specified.
• Improve fault tolerance logic to load corrupted PDF files where the /Prev entry in the Catalog dictionary points to an incorrect offset of the previous cross reference table.
• Documentation
• Adding the following new topics to the developer guide
• Customizing the look and feel of the ASP.NET Document Viewer.
  
• Fixed
• ASP.NET Document Viewer
• Search occurrence not being highlighted properly for OCR images having a skew angle.
• Document download button is not being shown on small screens.
• Document download is not working on iPad with iOS version 12.4.4.
• JavaScript console shows error ("Cannot read property 'length' of null") when searching for text.
• Not able to access the server side event handler in a website type project.
• The context property of the server-side event OnServerStart is null.
• Document save does not work when the viewer handler is placed inside a nested URL segment.
• Search result highlighting not being retained when the page is redrawn with the higher resolution image.
• Desktop and Mobile Document Viewers (WinForms, WPF and Xamarin)
• Improper layout of pages when the document contains pages of different sizes.
• WinForms Document Viewer
• Thumbnails are being scaled when the splitter is dragged.
• Document Converter
• Fix licensing issue where Document Converter should work in trial mode when used with the free edition license.
• Document Engines
• ArgumentOutOfRangeException when trying to view an HTML file without an extension.
• Whitespaces in HTML files not being displayed correctly.
• Word Engines
• Out of memory exception when attempting to view a DOC file.
• Viewer crashing when attempting to view a DOC file.
• Viewer hangs when attempting to view a DOC file.
• File contents being shown as plaintext when viewing a DOC file.
• Blank pages shown when trying to view a DOC file containing images.
• ArgumentOutOfRangeException when viewing DOC file.
• DOC file containing multicolumn layout being shown as a plaintext file when viewed in the document viewer.
• Table contents not being correctly rendered when viewing a DOC file.
• Table cell margins not being calculated correctly when rendering Word format files.
• Bottom cell margin being added multiple times for cells with more than one paragraph.
• Nested autofit tables not being laid out correctly.
• Text overlapping with footer contents when viewing a DOCX file containing varying text sizes in the last line appearing just above the footer.
• Poor quality rendering of scaled down images in DOCX files.
• System.UriFormatException thrown when opening a DOCX file for viewing.
• Out of memory exception when attempting to view a large DOCX file containing multiple columns.
• Viewer hangs when viewing a DOCX file containing a very large header.
• Text not appearing in table cells when viewing a DOCX file.
• Incorrect image positions when rendering a DOCX file.
• Some text boxes are not being displayed when viewing a DOCX file.
• Some images present inside a DOCX file not being rendered when viewing the file.
• InvalidOperationException thrown when trying to view a DOCX file.
• Paragraph bottom border not drawn correctly when the para is followed by a table when converting from DOCX to PDF.
• Loading doesn't stop when trying to view a DOCX file.
• ArgumentOutOfRangeException thrown when trying to convert DOCX to PDF file.
  
• Spreadsheet Engine
• Header content not showing when viewing an XLS file.
• Images in XLSX file not being scaled correctly when rendered.
• System.OverflowException thrown when attempting to view an XLSX file.
• Very slow loading of large XLSX files (spreadsheets with more than 50000 rows).
• System.ArgumentOutOfRangeException when trying to view an XLS file.
• High RAM usage when viewing large XLS files.
• Viewer crashes when trying to view an XLS file containing a formula encoded as a double-byte character string.
• Viewer crashes when trying to view an XLS file containing a boolean error value in one of the cells.
• Empty file generated when converting from spreadsheet format files to TXT.
• System.IndexOutOfRangeException when viewing an XLSX file.
• PDF Engine
• Extra tab being added at incorrect position in bulleted list when converting from PDF to TXT.
• InvalidCastException thrown when trying to view a PDF file.
• System.FormatException thrown when trying to view a PDF file.
• CryptographicException thrown when trying to view a PDF file.
• ClassCastException thrown while rendering images with Indexed Colorspace if the Index color values are specified as a string object inside another Indirect Reference object.
• Throws NullReferenceException while rendering shapes in the document which are filled using Stitching function type that contains "Sampled" function as one of the functions.
• Throws ClassCastException while rendering images with Indexed Colorspace if the Index color values are specified as a string object inside another Indirect Reference object.
• Several page contents are not rendered when a page content stream contains inline image at the end of the stream for which RestoreGraphicsState operator is specified in the subsequent content stream.
• Throws System IO error "Cannot access a closed Stream" while rendering inline images that are compressed using Flate.
• Throws NullReference exception while rendering CCITT images with Indexed colorspace.
• Throws InvalidCastException while rendering form fields when the values of the Rectangle array in the form field dictionary are specified as IndirectReference objects.
• Incorrect text rendered when the text uses non-symbolic Type1 embedded font with encoding set to None.
  1-BPC Type1 images are not rendered when the ImageMask flag in the image dictionary is true.
• DCT image having CCITT image as smask is rendered with inverted color.
• Images are rendered without honoring the transparency value set in the graphics state (i.e., the value set for /ca entry in the ExtGState resource dictionary).
• Throws "A generic error occurred in GDI+" error when the page content stream contains clipping operation with the operands specified using large values which can not be handled by GDI+.
• Throws StackOverflow error while loading PDF documents when an object contains Indirect Reference number as its content.
• Throws ArgumentOutOfRangeException while saving the loaded document when any of the existing objects contain a reference to an object number which is larger than the MaxValue of integer data type.
• When the document is saved multiple times with new contents (such as text, images, and shapes) added between each save, the new contents added after the first save are discarded in the subsequently saved output documents.
• Text form fields in the loaded document updated with Unicode text value do not show up correctly in the output document.
• Changing of font for the existing form field does not have any effect in the output document.
• Unnecessary creation of temp file for caching font information.
• "Names tree not present in the document" exception thrown when trying to view a PDF file.
• Slow rendering of a small PDF file containing an image with a mask.
• FormatException when converting from PDF to TXT file.
• Password prompt being shown when trying to view a PDF file encrypted with a blank user password.
• Missing and garbled text when viewing a PDF file containing a JBIG2 image.
  

Version 2020 R1 - June 16, 2020

• Enhanced
• WinForms, WPF and Xamarin Document Viewer
• Improved viewer performance by modifying the threading logic.
• Reduced the delay when switching documents in the viewer.
• Introduced LowestRenderingDPI setting under viewer preferences to control rendering quality.
• Introduced text search, interactive text selection and copy APIs
• Text search modes: Literal, Regex
• Text search options: CaseSensitive, WholeWord, WrapAround
• Methods: FindNext, FindPrevious
• Introduced new mouse mode
• MouseMode.TextSelectionMode
• WPF Document Viewer
• Extended support for MVVM Commands
• File: LoadDocumentCommand, CloseDocumentCommand
• Navigation: FirstPageCommand, PreviousPageCommand, NextPageCommand, LastPageCommand, GotoPageCommand
• Zoom: ZoomOutCommand, ZoomInCommand, ZoomToCommand, ZoomActualSizeCommand, ZoomFitPageCommand, ZoomFitHeightCommand, ZoomFitWidthCommand
• Rotation: RotateClockwiseCommand, RotateCounterClockwiseCommand, RotateCurrentPageClockwiseCommand, RotateCurrentPageCounterClockwiseCommand, RotateSelectedClockwiseCommand, RotateSelectedCounterClockwiseCommand
• ScrollModes: ScrollContinuousCommand, ScrollNonContinuousCommand, ScrollNonPageSwitchCommand
• PageLayouts: LayoutSinglePageCommand, LayoutTwoPageCommand, LayoutFitPagesCommand, LayoutCustomPagesCommand, LayoutSinglePageContinuousCommand, LayoutSinglePageNonContinuousCommand, LayoutSinglePageNonPageSwitchingCommand, LayoutTwoPageContinuousCommand, LayoutTwoPageNonContinuousCommand, LayoutTwoPageNonPageSwitchingCommand, LayoutShowCoverPageCommand
• MouseModes: MouseModeAreaSelectionCommand, MouseModeTextSelectionCommand, MouseModePanCommand, MouseModeMarqueeZoomCommand
• Viewing Orientation: ScrollOrientVerticalCommand, ScrollOrientHorizontalCommand
• Extended support for MVVM Bindable Properties
• FileName
• IsDocumentLoaded
• CurrentPage
• PageCount
• Zoom
• ZoomPercent, ZoomMode
• PageLayout
• Columns, ShowCoverPage, HorizontalSpacing, VerticalSpacing, ScrollMode, PageLayoutMode
• MouseMode
• NavigationPane
• NavigationPaneState, Visibility
• Orientation
• Xamarin Document Viewer
• Added support for pinch zoom.
• ASP.NET Document Viewer
• Introduced isPageFetchingCompleted method to check if all the pages are fetched from the server and rendered in the viewer.
• Document Converter
• Optimized processing time and output PDF size for conversion of images to PDF.
• Added an option 'Auto' to the ImageCompressionType enum property in PDFEncoderSettings to choose the image compression type automatically based on the input image type. Now, 'Auto' is the default value for ImageCompressionType enum property in PDFEncoderSettings.
  
• Document Engines
• Added CursorPosition property to IDocument interface to get/set the start position of text search.
• Added API to extract text from a document.
• Added API to perform text search.
• Word Engines
• Support for "autofit" table layout.
• Added setting to control rendering of hidden text (Framework.WordCompatibilitySettings.RenderHiddenText).
• Improved page rendering speed by parallelizing parsing and layouting of documents.
• Improved page rendering speed by caching font details.
• Reduced potential delays in page rendering by modifying threading logic.
• PDF Engine
• Support for reading of PDF files encrypted with Unicode passwords.
• Fixed
• WinForms, WPF and Xamarin Document Viewers
• Incorrect cleanup leading to random exceptions when closing a document.
• File not being loaded as plaintext even when extension is added to Framework.TextFileExtensions property.
• WPF Document Viewer
• Thumbnail pages are not updated when loading an XLSX file.
• Loading a PPTX file was not updating page count.
• Applying zoom results in Stackoverflow exception after some time.
• BackgroundColor property on DocumentViewer was not applied to its child controls.
• ASP.NET Viewer
• Form field font size is not proper when AutoFontSize property of form field is true.
• Missing file extension when downloading file as text file.
• Selecting a radio button throws an exception.
• Document Converter
• Conversion of TIFF image to PDF results in a blacked out page when the TIFF image is of Format4bppIndexed pixel format.
• Throws System.IndexOutOfRangeException while converting TIFF image to PDF when the TIFF image is of Format8bppIndexed pixel format.
• Throws IndexOutOfRangeException while converting PDF to image, when the PDF document with text which uses WinAnsi encoded embedded TrueType font which contains characters that are not available in the Latin character set.
• DocumentConverter.Error event is not triggered when there is an exception occurred in the PDF rendering process while converting PDF documents to other formats.
• PDF to TXT conversion results in empty text when the text contents in the PDF document use CJK encoded CID fonts.
  
• Mail Merge
• Empty headers and footers being added to the output DOCX file which was a "corrupted file" warning when opened in Microsoft Word.
• System.ArgumentException thrown when attempting to mail-merge with a DOCX file.
• Empty output document produced after mail-merge.
• Document Engines
• Random GDI+ exceptions when using multiple threads.
• Potential NPE when handling font objects.
• Word Engines
• Incorrect text line bounding rectangle when text is tabbed or justified.
• Rendering of space character after a line break not matching MS Word behavior.
• DOCX documents not containing document information can lead to crashes.
• Image incorrectly appearing in front of text when rendering a DOCX file.
• NPE when viewing a DOCX file containing fields.
• Text is incorrectly shown in uppercase when viewing a DOCX file.
• Numbering not shown for items in ordered list when viewing a DOCX file.
• Too much space after the first word in text when viewing a DOCX file.
• Missing image when viewing a DOCX file.
• Table cell shading not correctly applied for vertically merged cells in a DOCX file.
• Text not vertically centered correctly in vertically merged cells in a DOCX file.
• Grouped images not rendered correctly in a DOCX file.
• Engine hangs when rendering a DOCX file.
• System.FormatException when trying to view a DOCX file.
• Placeholder images for externally referenced objects are not being displayed in a DOCX file.
• Incorrect image positioning when rendering a DOC file.
• Table cell shading not being correctly parsed in a DOC file.
• Table indent value not being correctly parsed in a DOC file.
• Incorrect additional line spacing being added when rendering a DOC file.
• EndOfStreamException when loading a DOC file.
• Incorrect parsing of table cells ('th' element) in a HTML file.
• Spreadsheet Engines
• Page rendering not stopping even after CloseDocument API returns.
• Engine hangs when rendering a XLSX file.
• NPE when rendering a XLSX file.
• System.FormatException when parsing a XLSX file.
• XLS file being shown as a plain text file.
• PDF Engine
• Image inside a form XObject not being clipped correctly.
• System.AccessViolationException when rendering PDF file.
• System.ArgumentException when converting from multi-page TIFF image to PDF file.
• Large memory leak when converting from multi-page TIFF image to PDF file.
• Throws PDFException while loading a document with XRef Stream, if XRef Stream dictionary contains /W array with field size values greater than 4.
• Inline images compressed using the RunLength filter are not rendered.
• Throws System.InvalidCastException while rendering PDF pages when a PDF page contains Link annotation.
• Throws System.ArgumentException while converting from PDF to image when the page contains text that uses embedded font which contains composite glyphs with empty subpath(s).
• Throws System.InvalidCastException while reading actions of Link annotation when the action object is of Array type.
• Type1 font text with Standard encoding are not rendered.
• Text contents are not rendered on some systems when the text contents use embedded OpenType font.
• Saving a PDF file containing form fields multiple times results in a corrupted document.
• Licensing
• Showing of license related popup causing a crash when the library is used within a Windows service.
• Trial message being shown for a paid license installation.
• Product switching to trial mode after expiry of free updates period.
• Documentation
• Added following new content to the Developer Guide
• Welcome page with link to online version of the guide.
• Topic on text extraction and text search.
• FAQ related to product licensing.
  

Version 2019 R3 - November 25, 2019

• Important
• From this release onward .NET Framework 4.0 is not supported anymore. The lowest supported version is .NET Framework 4.5.
• Enhanced
• WPF Document Viewer
• Introduced a new property 'MouseMode' to change the mouse pointer actions. It provides three options: pan, selection and marquee zoom.
• Introduced area selection tool.
• Introduced drag and zoom feature.
• Added support for Mouse Up, Down and Move events.
• Document Viewers (Desktop & Mobile)
  
• Introduced Non-page switching Scrolling Mode.
• Introduced Cover Page Page Layouting option.
• The event 'ZoomListUpdated' is renamed as 'ZoomValuesUpdated'.
• New .NET Core compliant PDF Engine
• Support for rendering of CCITT Group 3 and Group 4 encoded images.
• Support for decoding of streams encoded in ASCIIHex, ASCII85, RunLength, and LZW, compression filter types in addition to already supported Flate encoded streams.
• Image engine
• Addressed the issue with TIFF taking longer time to load by loading the pages only when they are accessed.
• Word engine
• Fixed threading issue when drawing images embedded in Word documents.
• Handled parsing of external HTML content in DOCX engine.
• Handled the color property 'Auto' so that the text is visible when a black background is present.
• DOCX Parsing issue when cell properties are not defined resulting in "Object reference not set to an instance of an object" exception.
• DOCX fails to load when it has a namespace associated with ECMA 376 3rd edition.
• DOCX parsing issue when the unit is set to 'pt' as the expected unit is 'twips'.
• HTML engine
• Replaced the usage of XML parser in HTML engine with AngleSharp.
• Enabled HTML as an input format. This was disabled earlier since most HTML would fail to parse with the built in XML parser.
• Fixed
• PDF
• Updated fault tolerance logic to handle the case when trailer has incorrect xref table /Size entry.
  

Version 2019 R2 - September 23, 2019

• Introduced
• PDF Engine
• A newly designed PDF engine is introduced that works across platforms. Since this engine is not yet at parity with the feature-set of the old PDF engine, it is enabled only for .NET Standard. So it is used by the new Xamarin document viewer control and also can be used in .NET Core / .NET Core 3 frameworks. Once its feature-set matches that of the old PDF engine, the old engine will be replaced with the new one for all platforms.
• Features currently supported by the new PDF engine
• Shapes
• Text
• Supported font types: Type 1, TrueType, CFF, CID
• Images
• Supported image types: 8 BPC BMP and 8 BPC JPEG
• Decryption
• Supported encryption algorithms: RC4 (40 bit & 128 bit) and AES (128 bit & 256 bit)
• Stream decompression filter types:
• Flate
• Xamarin Document Viewer Control
• A new Document Viewer control is introduced for Xamarin.Forms mobile apps (Android and iOS).
• Features currently supported the control
• Page layouts
• Continuous: Single-page, Two-page, Fit-to-window
• Scroll orientation
• Vertical, Horizontal
• Navigation
• First-page, Previous-page, Next-page, Last-page, Goto-page
• Zoom
• Zoom-in, Zoom-out, Fit-width, Fit-height, Custom-zoom (unlimited)
• Rotation
• Specific pages and all pages
• Gestures
• Swipe, Pan and Double-tap
• Events
• PageChanged
• PageCountChanged
• ZoomChanged
• NeedPassword
• Product Licensing
• The old registration-key based product licensing system has been replaced with an activation-key based licensing system. See <here> for more details.
• Enhanced
• Document Engines
• All existing document engines (except PDF) are now supported on .NET Standard compliant frameworks (.NET Core and Xamarin as well).
• Updated file format prediction code to improve detection of supported files.
• Digitization Engine
• The digitization engine (OCR) is now supported on .NET Standard compliant frameworks as well.
• Document Converter
• The Document Converter component now works both in .NET Framework as well as .NET Standard.
• Document Mail-merge
• The Mail-merge component now works both in .NET Framework as well as .NET Standard.
• Document Viewers
• Both the WinForms and WPF viewer controls have been redesigned and rewritten from the ground-up.
• The newly introduced Xamarin Document Viewer control, and the rewritten WinForms and WPF Document Viewer controls share bulk of their code via the newly introduced PageManager module. This new design allows for faster introduction of features into all viewers at the same time.
• The WPF viewer now supports navigation via thumbnails as well as PDF bookmarks.
• Word formats
• Header and footer content is now rendered with a faded color to match Word behavior.
• Spreadsheet formats
• File is now read in a worker thread and content is rendered to pages.
• Fixed
• PDF
• DCT images having Separation Colorspace with Type 0 (Sampled) Function are rendered with inverted colors.
• JPX image having JPX image as SMask are not rendered.
• Shapes having Separation Colorspace with Type 0 (Sampled) Function are rendered incorrectly.
• Rendering DCT images having JPX image as SMask.
• Rendering of image that is compressed using Flate with Predictor value '15' takes longer than expected.
• Text extraction results in extraction of incorrect text for CID font text when the CID font contains ToUnicode stream with "beginbfrange" lines that specify array of Unicode values for the given range.
• Random errors observed in appearance of transparent text when converting to PDF.
• Deletion of annotations in the document leads to generation of corrupt PDF output.
• NRE thrown when fetching form fields for some PDF files.
• Form fields with unspecified field type are rendered twice.
• Text fields are not displayed after saving due to incorrect encoding text field value for some documents.
• Form fields are rendered at incorrect position due to incorrect handling of Matrix entry in the field appearance stream.
• Multiple embedded font text rendering fixes by the font engine.
• Word formats
• Picture watermarks are not being rendered correctly.
• NRE thrown when loading some DOCX files containing fields.
• NRE thrown when loading TXT files containing null characters.
• Rendering issue of fields where a width change isn't accounted for when the field value is changed.
• NRE when rendering some DOC files with a table.
• Tab stops of type "start" are not handled.
• Hang when rendering a table containing a page break.
• Highlight color not parsed properly in DOC files.
• Spreadsheet formats
• Rich text parsing issue in XLS.
  

Version 2019 R1 - March 14, 2019

• Enhanced
• ASP.NET Document Viewer
• Client-side APIs:
• Introduced "lazyLoading" property on "preferences". Setting "lazyLoading" to false causes the viewer to continue to load the document in background until all pages of the document are loaded and displayed in the viewer. This setting is useful for form filling scenarios. The "onFormLoaded" event is fired after all form fields on all the pages of the document are loaded and displayed in the viewer.
  
• Introduced "setTabStop" API on the form field object to enable/disable tab stop for a specified form field.
• Introduced "downloadFileformat" property on "beforeDownloadDocument" event which can be used to set the default download file format.
• Localization
• German and French localization resource files are added for WinForms Document Viewer.
• Fixed
• ASP.NET Document Viewer
• Internet Explorer 11 fails to print large documents.
• Resolution setting is not applied in memory caching.
• Signature fields are not rendered.
• Textfield’s orientation is ignored.
  
• Document Converter
• In DOCX to PDF conversion, the images are not compressed resulting in larger PDF output.
• The resulting PDF is not searchable when the input image has black background.
  
• PDF Engine
• Text extraction returns incorrect text for Type0 font text elements when the font contains empty CMap stream.
• Repeated loading and saving of AES 128 bit encrypted document makes the document corrupt after few iterations.
• RedactRegion API does not redact the text that intersects a specified region for redaction as the bounding rectangle of the matching text does not include the full ascent and descent part of the text.
• Images of type CCITT in a PDF are not rendered.
• Unicode characters in the captions of Pushbutton fields are not preserved while saving the document.
• The value of DA entry is getting corrupted while updating it when a document is saved.
• Format exception is thrown when  CreationDate or ModifiedDate values in Info dictionary are not of the format "D:YYYYMMDDHHmmSSOHH'mm".
• While encoding the text fields, unicode character is appended to the text-field's value even when its value is empty.
• Flattening of field results in incorrect flattened location when the document has incorrect /Size entry in the trailer dictionary.
• Flattening of field results in incorrect flattened location when the document has CropBox entry in the dictionary.
  
• Word Engine
• Doc parsing issue when the tab value is huge, resulting in incorrect rendering.
• Texts are rendered with incorrect font size as we are overriding the actual font size with font size associated to RTL/complex script text.
• Field code parsing issue resulting in System.ArgumentOutOfRange Exception.
• Paragraphs with left indentation and tab stops and text containing tab character are not handled correctly.
• Table rendering issue when background color of a cell is not specified.
• Texts are rendered with incorrect color when the color property is specified in the run property of a paragraph.
• When the document has numbered list, the numbering level is calculated incorrectly.
• Document is not rendered when it has a dropdown list.
  
• Image Engine
• When multipage TIFF is loaded to the viewer, only first page is rendered in place of all other pages.
• Multipage TIFF rendering issue where the dimension of the first page is being applied to all the pages.
  
• Text Engine
• Formatting is lost when the indentation character is a space or a tab.
  

Version 2018 R2 - September 24, 2018

• Enhanced
• ASP.NET Document Viewer
• Removed dependency of Quartz .NET.
• Support for viewing encrypted PDF files.
• Added password entry dialog box.
• Support for honoring document security restrictions.
  
• Introduced "Document Info" toolbar control to show document description & security details.
• Server-side APIs:
• Introduced overloaded method for LoadDocument which takes document password.
• Introduced "ServerEventsHandler" abstract class to provide server side document operations.
• OnServerStart
• BeforeDocumentLoad
• NeedUsername
• AfterDocumentSave
• Introduced "ViewerPreferences.Interactivity" API for setting interactivity preferences.
• ViewerPreferences.Interactivity.AllowFormFilling
• ViewerPreferences.Interactivity.AllowAnnotations
• Introduced "ViewerPreferences.FileOperations" API for setting restrictions on file operations.
• ViewerPreferences.FileOperations.AllowUpload
• ViewerPreferences.FileOperations.AllowDownload
• ViewerPreferences.FileOperations.AllowDownloadAs
• ViewerPreferences.FileOperations.AllowSave
• ViewerPreferences.FileOperations.AllowPrinting
• Introduced "ViewerPreferences.Rendering" API for setting rendering & printing DPI.
• ViewerPreferences.Rendering.ViewingDPI
• ViewerPreferences.Rendering.PrintingDPI
• Introduced "ViewerPreferences.Digitization" API for setting digitization preferences.
• ViewerPreferences.Digitization.Enabled
• ViewerPreferences.Digitization.RecognizeLanguages
• Introduced "ViewerPreferences.Security.ForceFullUserPermissions" API to enforce full permissions to the user.
• Client-side APIs:
• Introduced "documentViewer.View.getCurrentPageNumber()" method to get current viewing page number in the viewer.
• Introduced "documentViewer.View.refresh()" method to re-render the document viewer.
• Introduced "propertiesInfo" property on "Preferences.VisibleFileOperationControls" to specify whether "Properties Info" control needs to be displayed.
• Introduced "enablePasswordDialog" property on "Preferences.Security" to specify whether the password dialog box needs to be shown.
• Introduced "maxNumberOfPasswordRetries" property on "Preferences.Security" to specifies the maximum number of attempts for entering the password.
• Introduced overloaded method for loadDocument which takes document password.
• Events:
• Introduced "needDocumentPassword" event which fires when the document is password protected and when the correct password has not been provided via the loadDocument method.
• API refactoring:
• Renamed the following client side APIs:
• Preferences.viewSettings to Preferences.initialView
• Preferences.securitySettings to Preferences.security
• Preferences.interactiveElements.formFields to Preferences.interactiveElements.form
• Moved the following client side APIs to server side:
• preferences.renderingDpi
• preferences.printingDpi
• preferences.interactiveElements.formFields.enableFormFilling
• preferences.interactiveElements.annotations.enableAnnotations
• preferences.digitizerSettings
• preferences.userIdentity.name
• WinForms Document Viewer
• Support for interactivity with link annotations for Go-to, Named and URL action types.
• Support for interactivity with Pop Up annotations.
• Document Manager
• Added "GetFileInfo" methods in DocumentManager to get file information such as MIME type, size, whether open password is required to open the document.
• Fixed
• ASP.NET Document Viewer
• Delay in updating of page count indicator.
• Page count indicator animation continues to show even after all pages are loaded for flow documents.
• Document Converter
• XPS to PNG conversion fails.
• Converter hangs for text files since the DocumentManager is not loading the text file after creating the default engine (TXT).
• Throws PDFException "Parameter is not valid" while converting from DOCX to PDF when the source DOCX contains JPEG images of Colorspace type CMYK.
• PDF Engine
• JavaScript actions are not read for annotations and form fields when the JavaScript value is specified as non-String object i.e., Indirect Reference or Stream object in the action dictionary.
• Text and shapes are not rendered at correct location when cm transformations and shapes rendering occur between BT (BeginText) and ET (EndText) operations.
• Issue in storing and restoring negative font size resulting in incorrect rotation of the rendered text.
• Multiple text extraction issues related to Type0 and Type3 fonts which is producing incorrect output while converting from PDF to text.
• Trial mark is not shown correctly in thumbnail images as the font size adjustment is not done according to the scale value of the transformation.
• Throws PDFException "Unsupported action" while reading annotations having non-standard Named action types.
• Text elements written with individual glyph positioning values are not rendered at the correct position when the glyph positioning value is not specified for any of the characters.
• While saving encrypted documents the empty string values are not encrypted causing the document to have loading issue when the saved document is loaded.
• Throws "Generic GDI+ error" while rendering PDF pages having MediaBox value that are not mentioned in the order [left bottom right top].
• Form field values are always rendered using Helvetica font ignoring the font specified in the /DA entry of form field dictionary.
• For Text form fields, the new value set is not updated in the Normal appearance stream of the field only when the old value is empty in the appearance stream.
• Appearance stream of the form fields are always created using the properties of Parent field ignoring the properties of its own.
• The value for /AS entry of Text form field is always written as String type instead of Name type causing the generated document not conforming the PDF standard.
• While saving existing loaded documents the /Metadata and /StructTreeRoot entries referenced in the /Catalog dictionary are mapped to incorrect objects.
• Word Engine
• Incorrect positioning of text boxes that overflow page bounds.
• Borders being for text boxes which don't have a border.
• Text boxes present in headers and footers are not rendered.
• Text boxes with "no-fill" are being rendered opaque thereby hiding the content behind them.
• Information about the exact portion of the image to be displayed is not processed resulting in rendered image not being cropped.
• Relative position of floating tables not being handled resulting in improper positioning.
• Para borders not rendering correctly for paras with indents.
• Incorrect positioning of images when it is not inline and its width is more than the display region.
• Spreadsheets Engine
• Engine hangs when other format (eg.: Text) files are attempted to be loaded.
• XLS parsing issue where header is parsed incorrectly resulting in failure of many files.
• Image Engine
• Rendering issue with TIFF where some data is lost.
• Text Engine
• LoadDocument method taking a stream end up closing the stream.
• Inconsistent output when rendering TXT files or converting to PDF.
  

Version 2018 R1 - May 24, 2018

• Enhanced
• ASP.NET Document Viewer
• appSettings (in Web.Config)
• Introduced an additional option for "DocumentCache" property to cache the input document to database.
• Introduced "DBConnectionStringName" property to specify the database connection string name.
• Introduced “DBCleanupRetentionTime” property to specify the number of days to retain a document’s processed data since the time the document was last viewed.
• Introduced “DBCleanupIntervalTime” property to specify the database cleanup time in days.
• Renamed the option “License-Key” to “LicenseKey”.
• Server-side features
• Introduced new document cache store (database). This enables efficient document viewing, especially when using multiple servers in a load-balanced setup.
• Client-side features
• Introduced loadDocumentFromServer(serverDocumentPath: string) API to view document from server document path.
• Animation is added for progressive page count for flow-based documents.
• WinForms Document Viewer
• Introduced a new property “MouseMode” in DocumentViewer to change the mouse pointer actions. It provides three options: pan, selection and marquee zoom.
• Introduced area selection in the document viewer control.
• Introduced drag and zoom feature in document viewer control.
• Implemented Zonal OCR, where an area can be selected through viewer and the cropped image of the selected area is returned through a mouse event and the image can be sent to digitization engine to make it searchable.
• XtremeDigitizationEngine
• Added image preprocessing techniques to improve accuracy of recognized text.
• Upgraded to Tesseract version 3.0.2.
• Word Engine
• Added functionality to optionally enable "WordPerfect 6.x for Windows" style text justification.
• Fixed
• ASP.NET Document Viewer
• Incorrect handling of Bookmarks in disk caching.
• Incorrect handling of radio buttons at client side when its radio items are in different pages.
• Font color is not considered while rendering form fields.
• Radio button’s interactivity is lost due to Z-index issue.
• Form field parsing issue where the caption of push button is not being fully read.
• Checkboxes which acts as radio buttons are not checked while rendering.
• PDF Engine
• Updated fault tolerance logic to handle faults such as incorrect xref offset specified in startxref, null reference exception if a valid PDF object is not present, same object offsets values in xref table entries and incorrect /Prev entry in the trailer dictionary.
• Bookmarks’ actions modification issue where the edited bookmarks changes are not saved in the output document.
• Text field rendering issue where the flags are not processed for a child textfield.
• Individual glyph positioning value specified before first character in TJ operator is not handled.
• FontList.XML file is not created when the base directory doesn’t have write permission. So creation path is changed to temporary folder.
• Formfield’s coordinates are calculated relative to the current page even if the field does not belong to the page.
• Saving the document results in blank pages when the page content stream in the loaded document already contains a new-line character at the beginning of the stream.
• Captions of push button not being read correctly from the appearance stream when the caption is split across multiple text rendering operators.
• Text contents are not rendered for some documents due to CMap stream parsing issues.
  
• Word Engine
• DOCX rendering issue where image in the header and table are not rendered.
• Table rendering issue where paragraph borders inside the nested table cells are overflowing.
• Table rendering issue where the text position is incorrect inside the table.
• Exception thrown when rendering Text run which has a zero font size.
• DOC format parsing issue where the engine hangs when a corrupted file is loaded.
• Rendering Issue where table row overflowing a page is not being handled correctly.
• Rendering Issue where table row with "cantSplit" property set to true is not being handled correctly.
• Rendering Issue where table rows with "exact" height is not being handled correctly.
• If a numbered paragraph in a table cell overflows to a new page then the overflowed text is not being laid out properly.
• Incorrect clipping of rectangles while rendering table cell contents.
• Page wise conversion from DOCX to text produces files with incorrect contents.
• Exception thrown when converting DOCX to HTML because of invalid URI in the document.
• Minor theme fonts are not parsed properly resulting in using incorrect font while rendering DOCX file.
• Text lines are not rendered properly when a paragraph has spaces at the end of the line and it is out of boundary.
• Alternate font not being considered resulting in rendering text with wrong font.
• Parsing issue with different locales.
• Line spacing is not applied to an empty paragraph resulting in less paragraph spacing.
• Incorrect paragraph spacing when paragraph contains section break.
• Increase in table height when there are nested tables as an extra paragraph spacing is added in the end.
• Trailing spaces are not ignored when aligning a paragraph to right or center resulting in wrong alignment.
• Rendering issue where Default table style is not being applied.
• Words and characters are bunching up together due to insufficient inter-word and inter-character spacing.
• DOC rendering issue with Large headers resulting in infinite page rendering.
  
• Spreadsheet Engine
• Byte order is not considered while parsing cell formats. It is always parsed in single byte order resulting in wrong cell format.
• Incorrect calculation of cell value while parsing when it has a floating point number.
• XLSX parsing issue where “Very Hidden” sheet state is not handled resulting in incorrect rendering.
  

Version 2017 R5 - December 26, 2017

• Enhanced
• HTML5 Document Viewer
• Added support for form field input validation and calculations.
• Added support for form field push button JS actions for form submit/reset.
• Grouped checkboxes now behave like radio buttons where only one item in the group can be checked.
• Added setting "FormFields.readonlyColor" to specify background color for read-only form fields.
• Added setting "FormFields.focusColor" to specify background color for form field which has focus.
• Added API "View.showNavigationPane" and "View.hideNavigationPane" to show/hide navigation pane after the viewer is displayed.
• Word Engine
• Added RTF as an output format for document conversions.
• Framework
• Added setting "Framework.LoadUnsupportedFormatAsTXT" to specify whether unsupported and corrupted files should be loaded as TXT files. The default value is set to True so behaviour of existing code is unchanged.
• Fixed
• HTML5 Document Viewer
• Viewer settings refactoring
• Renamed "colorInversionEnabled" to "colorInversionApplied".
• Reanmed "viewSettings" to "ViewSettings".
• Viewer API refactoring
• Renamed public API group "forms" to "Forms".
• Renamed event "onFieldClick" to "onFieldClicked".
• Renamed event "onFieldChange" to "onFieldChanged".
• Safari browser issue where during form filling text entered in text edit box is not visible till the text input lost focus.
• Safari browser issue where printing a single page document having a page size of "US letter" is causing an extra empty page to be printed.
• Safari browser issue (on iPad) where scrolling is causing form fields to disappear.
• Form filling issue where focusing on to a combo box control is incorrectly showing field highlight color even when it is read-only.
• Search dialog is not automatically dismissed when a new document is loaded.
• Selected zoom value in the zoom drop-down is not updated when the zoom is changed using the +/- buttons.
• Internet Explorer browser issue where in full-screen view the background color of navigation pane and comment pane is black.
• Viewer is not redrawing the view correctly when the viewer size is changed.
• Form filling issue where export value of a combo box being null is not being handled correctly.
• Watermark drawn on thumbnail image disappears if navigation pane is closed and reopened.
• Rotating a page to 90 degrees or 270 degrees and then performing zoom is causing page width to not fit to page correctly.
• Print progress animation is being shown on whole page rather than just the viewer frame.
• Form filling issue where when no radio buttons are selected and  isRadioNoToggleToOff property is true then we were selecting the first radio by default. This is now fixed to match Adobe Reader’s behaviour which does not select any radio button.
• Form filling issue where text entry is being limited due to width limitation of text boxes. This is now fixed to allow a buffer of 10% in input text width calculation when trying to limit the text width.
• Printing issue where certain PDF files with a list box is failing to print.
• Form fields events issue where form field events are not being dispatched for handlers registered for a specific form field (using the field name).
• Modified behaviour to raise focus-in/focus-out events for read-only form fields.
• Form fields events issue where onFieldClick event is being incorrectly dispatched on mouse down.
• Form fields events issue where beforeFormSubmit event is not being triggered.
• Form fields issue where the reset API is deleting fields.
• API "getAllFormFields" fails if called on PDF files having pages without any form fields on them.
• File lock (on server) is not being released even after closing the document on the viewer.
• XML parsing error (no root element found) being logged in Firefox browser console.
• WinForms Viewer
• Scrolling issue when page layout is single-page non-continuous.
• WPF Viewer
• Scrolling issue where the page is not scrolling to the end when the page layout mode is set to non-continuous.
• Document Converter
• Input files with dots in the name is causing an incorrect default output file name to be generated.
• Conversion from images of smaller size and higher Dpi to searchable PDF is not adding the searchable text to the output PDF.
• Conversion from images of 72 Dpi to searchable PDF is adding the searchable text at incorrect position.
• Conversion from documents to TIFF image with specified DPI is not scaling the source page contents on the destination TIFF image.
• The stream position of returned Stream values from DocumentConverter.ConvertToStream method are not reset to position '0'.
• Word Engine
• DOC file parsing issue where a table cell's first item not being text is not handled correctly.
• DOC parsing issue where compressed WMF images are not handled.
• DOC parsing issue where an image with missing data entry in OLESS root is not being read.
• DOC parsing issue where tables with missing style definitions are not being read.
• DOC files larger than 6.875 MB cause parsing error.
• Corrupted DOC file not causing "FormatNotSupported" exception to be thrown.
• Corrupted DOC file freezes the engine when loading.
• DOCX files fail to parse when a duplicate style definition is present.
• DOCX files fail to parse when header/footer contains a textbox and a text run in it.
• Tabs parsing issue where custom tabs to be ignored are not parsed properly.
• DOCX rendering issue where content is overlapping in merged cells.
• Many issues in tabs handling.
• Thread race condition issue in HTML parser.
• Spaces in text run which are present outside the page region are ignored.
• Rendering issue where tabs present before images are being ignored.
• Rendering issue where a text box with text wrap of type "top and bottom" is not being handled correctly.
• Spreadsheet Engine
• Styling issue when a built-in style with a non standard name is encountered.
• PDF Engine
• Layouting issue where the spacing mentioned for an empty content X-position is not calculated properly.
• Rendering issue where inline images are not rendered correctly when inline image stream is decoded using PDF encoding.
• Annotations with 180 degree angle rotation is not handled properly.
• PDF action parameter of annotations is not handled correctly.
• Image rendering issue where processing of SMaskStream is incorrect when SMask image BPC is 1. Also the image stream is not read when its length is 1 and it's not a newline.
• Image rendering issue where 1BPC grayscale inline images are not being rendered correctly.
• Image rendering issue where ARGB values are not read correctly for color-key masked images.
• Image rendering issue where transparency is not handled for inverted gray-scale images.
• API "MakeTransparent" incorrectly making the image blank.
• Saving a PDF file having multiple checkbox fields under one parent field is creating a corrupted file.
• Fetching all form fields and saving the file is creating a corrupted file.
• White-spaces present in encrypted streams are not being skipped.
• Field name, mapping name and fully qualified name of form fields are not being decoded correctly.
• Default value of form field is not being decoded correctly when the value contained only the Byte Order Marker.
• Radio-in-unison property of a radio button group form field is not being decoded correctly.
• Read-only property and maximum length property of a comb form field is not being decoded correctly.
• Form fields marked as hidden are being rendered when viewing and printing.
  
• Form fields marked as no-view are being rendered when viewing.
• Form fields marked as no-print are being rendered when printing.
• Checkboxes and radio buttons are not checked correctly when printing. This issue is happening only when the form field values are edited after loading the document.
• Page contents of certain PDF files are being offset due to MediaBox/CropBox interaction.
• Text was overlapping due to character width not being set correctly.
• CMap stream is not being read correctly.
• "PDFException" is thrown while loading some PDF documents when the PDF file contains numerous 'NUL' bytes at the end of file.
  

Version 2017 R4 - July 25, 2017

• Enhanced
• HTML5 Document Viewer
• Forms
• Introduced option to control background color of read-only fields and the field in focus.
• Internationalization Support:
• Internationalization support using external jQuery.i18n.properties jQuery library.
• Events
• Updated “afterPageDraw” event to fire just after page is rendered on Viewer/Thumbnails/Printer surface. This helps to add custom content on the page surface without affecting underlying document
• API refactoring:
• All Search APIs  are grouped under “search” property of “Preferences”.
• Introduced “enableQuickSearch” to enable search capability on the viewer.
• Introduced “navigationPaneOpened” property on “Preferences.viewSettings” to specify initial state of navigation pane to be shown or collapsed.
• Fixed
• HTML5 Document Viewer
• Submit form action export value issue with checkbox and radio button.
• GUI behaviour for the fields which has both “ReadOnly” and “Required” properties set.
• Word Engine
• Bulleted text indentation issue when hanging and first line indent is set independently in multiple style hierarchies.
• Underline formatting is not applied to a paragraph when it has only single/multiple spaces.
• Handled issue with calculating row height in case of table overflowing across multiple pages.
• Handled condition to ignore custom tab stops in paragraph parsing.
• Spreadsheet Engine
• Parsing styles for first header and footer element in ODS format.
• Handled condition to ignore the corrupted image while parsing in ODS format.
• Calculating cell width when Normal cell style is not present.

Version 2017 R3 - May 29, 2017

• Enhanced
• HTML5 Document Viewer
• Interactivity features:
• Support for link annotations.
• Support for PDF Actions
• GOTO Action : XYZ, fit, fitH, fitV, fitR, fitB, fitBH, fitBV.
• Named Action : firstpage, prevpage, lastpage, nextpage, print, close.
• URI Action.
• Improved navigation through bookmarks by supporting associated actions.
• APIs:
• Introduced ZoomMode.FitPage.
• New APIs to configure security settings under “Preferences”:
• Hyperlink navigation access settings like allowed, blocked and custom access like providing blocked and trusted sites etc.
• Events:
• Introduced “onNavigationAction” event to notify pdf actions performed on bookmarks and link annotations.
• Fixed
• HTML5 Document Viewer
• Page is shifting few pixels down during page navigation.
• Minor fixes related to interactivity.
• PDF Engine
• Bookmark action parameters with some missing values.
• Text rendering with improper rotation.
• Spreadsheet Engine
• Rendering of gridlines looks asymmetric.
• Fixed Number formatting associated with cell value.
• Parsing default cell values of rich text in XLS format.
• Handled fractions and custom cell formatting.
• Default alignment for boolean cell values is set to center.

Version 2017 R2 - May 5, 2017

• Enhanced
• HTML5 Document Viewer
• Introduced feature to annotate PDF files
• Adding new annotation: Sticky Note
• Editing existing markup annotations: Sticky Note, Line, Square, Polygon, Polyline, Ellipse
• Shape properties supported:
• Stroke: Color, Width, Style - Solid and Dashed
• Fill: Color
• Interactivity features:
• Moving annotations
• Editing popup content
• Adding reply thread
• Setting of status (Accepted, Rejected, Completed and Cancelled)
• Support for tooltips
• Document level operations:
• Print and Download modified annotated documents
• APIs:
• Introduced API to specify whether annotations interactivity should be enabled
• Introduced API to set user identity which is used while editing annotations
• Form Filling
• API:
• Introduced API to get list of form fields, get and set form field values
• Events:
• Introduced “beforeFormSubmit” to review form field before posting to server
• Introduced “afterFormSubmit” to notify document form fields changes sent to the server
• Introduced “OnClick”, “OnFocusIn” and “OnFocusOut” events for all form fields
• Introduced “OnChange” event for text edit, combo box, check box and list box fields
• General
• Events:
• Introduced “afterPageDrawn” to add custom content on the viewer page without affecting underlying document
• Document Viewing/Printing/Conversion
• Spreadsheet
• Enhanced content support
• Introduced support for Tables with predefined and custom table styles
• Added support for Page number, Date, Time, File path, File name, Sheet name in Headers & Footers
• Introduced Cell and Sheet formatting support
• APIs Introduced:
• ShowGridlines: to show/hide gridlines while viewing and printing
• ShowHeadings: to show/hide headings while viewing and printing
• FormattingMode : to choose in-built document settings or user specified settings for document layouting operation

• Fixed
• PDF Engine
• Incorrect coordinates are returned for Annotations and Form fields when the page contains negative coordinates in MediaBox/CropBox.
• Rendering of indexed DCT Images with masking are supported.
• Word Engine
• Rendering of textboxes with position relative to margins are handled.
• Rendering of tables with incorrect border width value are handled.
• Spreadsheet Engine
• Parsing issue with images when its position is relative to cell in XLS format.
• Converting parsed hexadecimal value to double precision floating point numbers in XLS format.
• Right and center alignment issue when cell content width is more than cell width.
• Enhanced Cell layouting to layout Date and Accounting formats.
• Re-layouting is done to consider print properties when Print API is called.
• Column heading width is calculated based on the width of highest column number.

Version 2017 R1 - January 5, 2017

• Enhanced
• HTML5 Document Viewer
• Demos
• Added a full-featured demo using ASP.NET WebForms in VB
• Added a full-featured demo using ASP.NET MVC in VB
• Features
• Optimized user interface behaviour in mobile devices
• Client-side features:
• New properties to configure Navigation Pane under “Preferences”:
• Preferences.NavigationPane.visible
• Preferences.NavigationPane.position
• Preferences.NavigationPane.width
• Preferences.NavigationPane.Bookmarks.enabled
• Preferences.NavigationPane.Thumbnails.enabled
• Multi-Format Document Viewer / Printer / Converter
• Formal release of Spreadsheet formats Support for
• XLSX
• XLS
• ODS
• Spreadsheets supported features includes
• Content
• Header
• First Header
• Even Header
• Odd / Default Header
• Footer
• First Footer
• Even Footer
• Odd / Default Footer
• Heading
• Row Heading
• Column Heading
• Boolean value
• Text alignment based on its type
• Cell Formats
• Formatting
• Row Styles
• Alignment
• Borders
• Fills
• Hidden items
• Row Hide
• Column Hide
• Fixed
• HTML5 Document Viewer
• Toolbar layouting issue in mobile device
• Text search issue in IE
• Form-filling issue on Safari (Mac) where entered text was invisible
• PDF form-filling issue where the unchecked state of checkboxes was not being saved
• Issue in PDF form filling where text copied using the mouse (right-click -> paste) into a multi-line field was being ignored
• Issue in PDF form filling where duplicate (fields having same name) multi-line fields were not being handled correctly
• Multi-Format Document Viewer / Printer / Converter
• XLSX
• Image parsing issue in XLSX where the image stream and scaling factors were not parsed.
• Layouting issue when there are long lines in a cell with wrap text value set to false.
• Layouting issue when there are Long lines in a cell with cells merged.
• Vertical alignment issue with Rich text.
• Issue with rendering font style information.
• Issue with rendering boolean type and its default properties like alignment.
• Issue with Background color rendering where tint percentage was not considered.
• Issue with font color rendering where tint percentage was not considered.
• XLS
• Issue with Rendering Row style information
• Issue with formula rendering when there was string type formula and error type formula.
• Issue with font information rendering
• ODS
• Issue with Rendering Row style information
• Issue with parsing images
• PDF
• Desktop printer produces low quality output.
• GetAllAnnotations() does not return annotations added in the current instance.

Version 2016 R6 - October 20, 2016

• Enhanced
• Xamarin Document Viewer [BETA]
• Formats Supported
• Word
• DOCX, DOC, RTF
• Images
• BMP, PNG, JPEG, EMF, WMF
• Text
• Features
• Load
• From file
• From stream
• Zoom
• Zoom In
• Zoom Out
• Tap Zoom
• Page Navigation
• First Page
• Last Page
• Next Page
• Previous Page
• Rotation
• Provide custom fonts
• Highly customizable toolbar
• HTML5 Document Viewer
• appSettings (in Web.Config)
• Introduced "PathMode" property to specify whether 'DiskPath' should be considered as absolute path or relative path.
• Server-side features:
• Optimized server document caching on disk.
• Optimized server document caching in memory.
• Client-side features:
• Refresh viewer layout : refresh()
• Introduced "Preferences.renderingDpi" property to set view document quality.
• Introduced "Preferences.printingDpi" property to set print document quality.
• Multi-Format Document Viewer / Printer / Converter
• Excel Support [BETA]
• Format Supported
• XLSX
• XLS
• ODS
• Features
• Content
• Text
• Rich Text
• Images
• Formatting
• Text Wrapping
• RichText
• Cell Formats
• Number
• Currency
• Date
• Time
• Percentage
• Special
• Cell Merging
• Horizontal
• Vertical
• Introduced “Formatter Settings” [to accept input to layout spreadsheet documents] under “Preferences” of DocumentViewer/Printer/Converter controls.
• Page Settings
• Margin
• Size
• Orientation
• LayoutDirection
• ForwardZ
• BackwardN
• GridLinesView [boolean]
• GridLinesPrint [boolean]
• Document Engine
• PDF
• PDF object.
• Deleting annotations supported.
• PDFAnnot
• Reading and setting modified date is enabled
• PDFMarkupAnnot
• Replying to existing annotation is supported.
• Reading and setting intent type for annotation is supported.
• PDFIntentType
• Enumerations to set intent types are introduced.

• Fixed
• HTML5 Document Viewer
• Document navigation using toolbar buttons throws exception in ASP.NET MVC Application.
• Initial viewersettings request fails in ASP.NET MVC Application.
• Page indicator background color changes.
• Page indicator dimension changes.
• Search dialog background color shown as white and search text entered is not visible in Safari.
• WinForms Document Viewer
• Anchors causing problem in placing document pages in the viewer
• Mail-Merge
• Fields were not merging while specifying the custom map
• Multi-Format Document Viewer / Printer / Converter
• Issue with Tabs spacing in Word formats
• DOC: Using Master Allocation table to construct FAT sector chain
• Document Converter
• Converting High resolution images
• PDF to DOCX with only images, resulting DOCX was blank
• DOCX to PDF with Unicode characters
• DOCX to PDF with huge images with transparency

Version 2016 R5 - August 4, 2016

• Enhanced
• HTML5 Document Viewer
• Interactive form filling
• Introduced keyboard navigation support
• Text Field
• Support for “SpellCheck” property
• Support for “DoNotScroll” property on single line Text Fields
• ListBox and ComboBox
• Support for selection of multiple items
• Radio Button
• Support for “RadioInUnison” property
• Introduced “highlightColor” under “Preferences” to set the preferred highlight color for form fields
• Grouped all form fields related options under “Preferences”:
• Preferences.InteractiveElements.FormFields.enableFormFilling
• Preferences.InteractiveElements.FormFields.highlightColor
• Improved form filling experience by making field highlight region transparent to avoid masking of page background
• Introduced “save()” API to save the form field changes on the server
• Introduced “beforeDocumentSave” and “afterDocumentSave” events
• Multi-Format Document Viewers / Printer / Converter
• PDF Viewing, Conversion and Printing
• Support for AES 256-bit encrypted PDF documents
• Fixed
• PDF Engine
• Form fields with flags such as “Hidden” and “NoView” were rendered while viewing and printing the page contents.

Version 2016 R4 - June 1, 2016

• Enhanced
• HTML5 Document Viewer
• Interactive form filling
• Support for “Required” and “ReadOnly” properties
• Support for “NoExport” property
• Support for tooltips
• Text Box
• Support for “MaxLength” property
• ListBox
• Support for selection of multiple items
• Radio Button
• Support for “NoToggleToOff” property
• Introduced “viewSettings” under “Preferences” to initialize viewer with default settings when a document is loaded.
• Supported settings
• Zoom
• Rotation
• Color inversion
• Introduced uploadDocumentFromUri(documentUri: string) API to view document from URL.
• Introduced rotatePages(rotationAngle: RotationAngle) API to rotate the pages to any of the pre-defined angles
• zoom(zoomMode: ZoomMode) API now accepts zoomMode parameter. This helps in specifying auto-calculated zoom levels like “fit-width” and “fit-height”.
• WinForms / WPF Document Viewer / Printer / Converter
• Removed dependency on “Newtonsoft.Json.dll”
• Multi-Format Document Viewers / Printer / Converter
• PDF Viewing, Conversion and Printing
• Introduced support for rendering “JPEG2000” images
• Rendering of tiling graphics pattern for filling shapes.
• Removed dependency on “log4net.dll”

• Fixed
• TIFF format recognition issues when extension is set to “G3F, G3N, G4F, G4N”
• HTML5 Document Viewer
• Push Button with transparent background color
• Push Button with transparent border color
• WPF Document Viewer
• Retaining previous rotation angle when new document is loaded
• Events do not unregister automatically after calling CloseDocument()
• sender in commands is null
• In MVVM apps, Zoom percent changes to 0.5 on on setting ZoomMode to FitHeight resulting in the viewer showing very small pages.
• DOC Binary Format
• Issue while constructing 0Table stream
• PDF Viewing and Printing
• Page contents are not rendered at the correct location following a BeginText and EndText operation if it contains a text transformation.

Version 2016 R3 - May 6, 2016

• Enhanced
• HTML5 Document Viewer
• Completely redesigned HTML5 Document Viewer control
• Provides rich set of client side APIs
• Introduced APIs for Quick Find operation
• findFirst(), findNext(), findPrevious(), findLast()
• All document level operations return JQueryPromise() object to get status info
• Redesigned DocumentViewer initialization and “Preferences” class for ease of use
• Redesigned event interface
• Event registration through addEventListener() API on DocumentViewer object
• Event de-registration through removeEventListener() API on DocumentViewer object
• List of events supported
• beforePageChange
• afterPageChange
• beforeZoomChange
• afterZoomChange
• beforeDocumentLoad
• afterDocumentLoad
• beforeDocumentUpload
• afterDocumentUpload
• beforeDocumentPrint
• afterDocumentPrint
• beforeDocumentClose
• onDocumentClose
• afterDocumentClose
• beforePageRotate
• afterPageRotate
• beforeDocumentDownload
• afterDocumentDownload
• Improved “Quick Find” experience
• Redesigned toolbar UI for improved responsive behaviour
• TypeScript support
• TypeScript type definitions included
• Interactive form filling
• Fields supported
• Text Field
• Support for standard fields, comb fields, and password fields
• Check Box
• Radio Button
• Push Button
• Reset Action
• Resets all fields
• Submit Action
• Supports HTTP GET and POST methods
• Combo Box
• List Box
• Introduced APIs for submitting and resetting form fields
• submitForm(submitUrl, submitMethod, includeFields): JQueryPromise
• resetForm(fieldsToReset)
• Introduced text search capability on scanned documents using OCR technology.
• Properties to configure
• preferences.digitizerSettings.digitizationEnabled: boolean
• preferences.digitizerSettings.textLanguage : string
• Introduced “logger” class to enable logging of messages generated by DocumentViewer control on the browser console.
• Properties to configure
• logger.errorLogsEnabled: boolean
• logger.infoLogsEnabled: boolean
• WPF Document Viewer
• Introduced Commands for MVVM pattern
• DocumentLoadedCommand
• PageChangedCommand
• ZoomChangedCommand
• NeedPasswordCommand

• Fixed
• Multi-format Document Converter
• Converting Images to PDF throws “Value cannot be null” exception.
• ASP.NET WebForms Document Viewer
• Issues while loading files after calling closeDocument().
• Issues while loading XPS files.
• WPF Document Viewer
• Navigation to specific page number through DocumentLoaded event.
• Document Engines
• Word formats
• Issue while printing DOCX documents with CheckBox fields.
• Application hangs with some documents having floating drawing objects.
• PDF
• Loading specific files with form fields throws “Null reference” exception.
• Issues while handling opaque JBIG2 encoded images.
• TIFF
• Image with higher DPI were stretched and cropped.
• General
• Installation to GAC fails if user has only Visual Studio 2013 or Visual Studio 2015.

Version 2016 R2 - February 23, 2016

• Enhanced
  • Multi-format Document Viewer
    • WPF
      • Extended MVVM support for rotation of pages.
      • Grouped “ZoomMode” and “ZoomPercent” under “Zoom” property.
  • Document Engines
    • DOC
      • Improved rendering of bulleted and numbered lists.
      • Improved fault tolerance when loading documents.
      • Support for rendering paragraphs even when style is not specified.
• Fixed
  • Document Engines
    • DOC
      • Incorrect calculation of structure offsets.
      • Font size not accurate in some cases.
    • PDF
      • Incorrect positioning of text elements if position values are specified before the text content in the internal PDF encoding of the text element.
      • Incorrect number of pages was read from some PDFs which are incrementally updated or linearized when Pages dictionary is not read from the updated XRef stream/table.
  • Multi-format Document Conversion
    • Retain attachments of input PDF Portfolio.
    • KeyNotFoundException while converting DOCX to PDF.
  • Multi-format Document Viewer
    • WPF
      • Calculation of ZoomPercent when ZoomMode set to FitPage/FitWidth/FitHeight.
      • Expanding and collapsing of Navigation pane.

Version 2016 R1 - February 8, 2016

• Enhanced
  • WPF Document Viewer
    • Added MVVM support for navigation pane.
  • View / Print / Convert
    • DOCX
      • Support for page numbers in “Structured Document Tag” (SDT).
    • DOC
      • Added support to read document properties (CreateDate, SaveDate, Author, Subject, Keywords, Title).
    • PDF
      • Optimized rendering of embedded fonts.
      • Optimized caching of glyphs.
      • Rendering improvements for most of the curved glyphs of TrueType fonts.
      • Optimized rendering of Type1 Fonts.
    • TIFF
      • Optimized loading of files.
• Fixed
  • HTML5 Document Viewer
    • Not able to search.
    • Page response status not handled.
    • Not able to zoom when calling Zoom method in afterDocumentLoad event.
    • Calling closeDocument method not discarding document from server cache.
    • Printing a document adding empty pages.
  • WPF Document Viewer
    • Application hangs while setting ZoomType to FitPage/FitHeight/FitWidth when Height/Width is not specified on the viewer control.
  • PDF
    • Rendering of 8-bpc Images with ColorKey masking are supported.
    • Font substitution not happening when font engine is unable to load the font.
    • JBIG2 image with global stream throws index out of range exception.

Version 2015 R21 - December 21, 2015

• Enhanced
• Rendering of Indexed Image with ColorKey Masking are supported.
• Rendering of 8BPC DCT images with 8BPC Grayscale SMask are supported.
• Fixed
• Multi-Format Document Rendering
• Word Formats(DOCX, DOC)
• DefaultTabSpace is set to “720” twips if not present in the document.
• Parsing of Field fails in some cases.
• Para border not encoded for left, right borders.
• Parsing of 2 byte special characters in DOC; Special characters listed in specification are converted to Unicode before rendering.
• IndexOutOfBoundException while parsing document with TextBoxes.
• Border thickness rendered incorrect in some documents.
• PDF:
• Sometimes while performing clipping operation on graphics black patches were rendered.
• Drawing two different images in PDF of same size were resulting in duplication of first image in both places.
• Subscript and superscript text were not rendered at the expected position if the font used is embedded.
• Incorrect parsing of Widths array for CID font when the Widths-array contains indirect reference for width values.
• Page size calculation was wrong when CropBox region is beyond the boundary of MediaBox.
• Multi-Format Document Viewing
• WinForms / WPF
• ZoomType value not retained after page rotation.

Version 2015 R20 - November 30, 2015

• Enhanced
• Multi-Format Document Viewing/Printing/Conversion
• DOCX: Support for text wrapping break character.
• Document Creation
• DOCX: Creation of files with nested tables.
• Multi-Format Document Viewing
• WinForms / WPF
• Introduced ZoomMode.FitHeight
  
• Fixed
• Multi-Format Document Rendering
• DOCX: Rendering of elements of nested table are repeated in some documents.

Version 2015 R19 - November 19, 2015

• Enhanced
• DOCX View / Print / Convert
• DOCX files that do not contain theme data are rendered with default theme.
• Fixed
• Printer
• DocumentPrinter locks file after printing.

Version 2015 R18 - October 23, 2015

• Enhanced
• Viewer / Converter / Printer
  
• Removed dependency of BouncyCastle.Crypto.dll.
• Rendering of DATE, TIME and PAGE fields in DOCX.
  
• Internal redesign for improving support for new formats.
• Fixed
• DOCX Processing
• Issues with Images that have “top and bottom” wrap.

Version 2015 R17 - September 26, 2015

• Enhanced
• Document Viewing/Printing/Conversion
  
• Improved reliability of the Word engines on successive loading of documents.

Version 2015 R16 - September 8, 2015

• Fixed
• Viewer / Converter / Printer
• Input file is opened in shareable mode so other applications can edit the file.
• PDF Processing
• Issues in decompressing the PDF files which contains white-space characters at the beginning of the stream
• Was throwing ClassCastException for some documents while processing Colospace array when Colorspace name element of the array is mentioned as Indirect Reference object.
• Throws StackoverflowException while processing ICCBased Color-Space for some documents.
• Throws StackoverflowException while parsing some objects that begins with comment line for some documents.

Version 2015 R15 - August 25, 2015

• Fixed
• WinForms and WPF Viewers
• Rendering issues related to DPI.
• WPF Viewer
• Exception raised when RotatePage() API is called without specifying the optional page number parameter.
• Mail-Merge
• NullReferenceException while sending mail through custom EmailSender.
• Multi-Format Document Conversion
• Exception raised while converting to Text format.
• PDF Rendering
• Some pages of PDF not rendered if the Page intermediate node has unequal distribution of pages.
• PDF files with whitespaces in compressed stream are rendered blank.

Version 2015 R14 - August 12, 2015

• Introduced
• All Viewers / Printer / Converter
• Introduced text format support.
• Introduced “Formatter Settings” [to accept input to layout text documents] under “Preferences” of DocumentViewer controls.
• Font
• Page Settings
• Margin
• Size
• Orientation
• Introduced XPS format support.
• HTML5 Viewer
• Client-side features
  
  • Introduced APIs for color inversion.
  • Properties
  • visibleColorInversionControls.allPages
    
  • Methods
  • InvertColors()
    
• Mail-merge
• Introduced customizable email sender class [EmailSender] which enables support for sending email using any custom mail component like EWS, etc.
  
• Multi-Format Document Converter
• OCR
• Conversion of scanned documents to searchable PDF now supports other languages supported by Tesseract, including support for multiple languages in the same document.
  
• Enhanced
• Multi-Format Document Viewer(WinForms)
• Renamed “ZoomType” to “ZoomMode”
• Grouped “ZoomMode” and “ZoomPercent” under “Zoom” property of “DocumentViewer”
• [New] Introduced “NavigationPane.WidthPercentage” property to set the width of the navigation pane window in percentage programmatically
• Multi-Format Document Converter
• OCR
• DocumentLanguage [ConverterPreferences.DigitizerSettings. OCRSettings.DocumentLanguage] property now accepts string type instead of DocumentLanguage enum
• Fixed
• DOCX View / Print / Convert
• Minor bug fixes
• Failed to emit module error with Visual Studio 2015 RTM
• Text is not rendered due to incorrect parsing of the CMAP stream in some documents.
• PDF files are not loaded properly if the decompressed stream has white spaces at the beginning of the stream.
• Objects are not rendered using specified colors when color-space is not specified for the colors (colorspace type should be decided using the number of colors specified).
  

Version 2015 R13 - July 10, 2015

• Introduced
  • Added converter demos to GitHub repo: https://github.com/Gnostice/XDoc.NET
  • DOCX: Added support for check box and dropdown list form field.
• Enhanced
  • Multi-Format Document Conversion
    • EncoderSettings now takes indexer which accepts file extension or mime type as input and returns corresponding encoder settings. This helps to preserve the encoder settings made on a specific format. For example,

      var pdfEncoderSettings = DocumentConverter1.EncoderSettings["PDF"];

    • Signature of ConvertToFile and ConvertToStream is altered by interchanging the positions of ConverterSettings and EncoderSettings parameters. EncoderSettings is placed before the ConverterSettings as the former parameter is used most often compared to the later.
  • Multi-Format Document Viewing
    • WinForms and WPF: Improved rendering quality
• Fixed
  • Multi-Format Document Viewing
    • DOCX: Random lines were drawn even when border width was zero.
    • Current page number field does not display value sometimes.
    • PDF: InvalidCastException encountered while loading documents that contain OCGs entry (in OCProperties dictionary of Catalog dictionary) for which the type of the value is IndirectReference.