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How To Rearrange Pages In A PDF Document

Learn how to move pages around in a PDF document using PDFtoolkit VCL.
Mohammed Najeemudheen and Suraj C. B.

In this article, we will see how to rearrange pages in an existing PDF document. For an example, we will use a document with say 10 pages. We will try to move page 2 to the position of page 5.

First, we use the ExtractPagesTo() method of TgtPDFDocument class to extract Page 2. Next, we delete Page 2 from the document using DeletePages() method. Finally, we copy the extracted page from the temporary document to location of Page 5 in the original document using the method InsertPagesFrom().

 LFrom: String;
 LToPage: Integer;
 LTempDoc, PDFDoc: TgtPDFDocument;
  PDFDoc := TgtPDFDocument.Create(Nil);

  // Load input PDF document

  // Disable interactivity
  PDFDoc.ShowSetupDialog := False;
  PDFDoc.OpenAfterSave := False;

  // Create a memory stream
  Lstream :=TMemoryStream.Create;

  // Create a temporary PDF document object
  LTempDoc := TgtPDFDocument.Create(self);

  LTempDoc.ShowSetupDialog := False;
  LTempDoc.OpenAfterSave := False;

  // Page position from a page
  // needs to be moved
  LFrom := '2';

  // Page position to which a page
  // needs to moved
  LToPage := 5;

  if LToPage <= PDFDoc.PageCount then
    // Extract page 1
    // to a temporary document

    // Save extracted page to a memory stream

    // Delete extracted page from input
    // PDF document

    // Load the temporary PDF document

    // Insert the extracted page (currently
    // page 1 in the temporary document) at 
    // position page 5

    // Save modified document
   ShowMessage('Page out of range ! Max Page =

You may have wondered why we are saving the temporary document object to a memory stream. When we call ExtractPagesTo(), it does retrieve Page 2 to the LTempDoc object, holding just a reference to that page but not yet representing the structure of a wholesome PDF document.

For this reason, we save it to a memory stream and load it again from that memory stream. When we do this, LTempDoc represents a wholesome independent PDF document with a very retrievable Page 1 (originally Page 2), which we can then insert at position of Page 5.


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