PDF4NET (英語版) のリリース

Released: Apr 29, 2021

10.6.x での更新項目


Updated Apr 29, 2021


  • Added new JPEG2000 decoder.
  • Added dedicated PDF4NET assemblies for Microsoft .NET 5.
  • Added the ability to extract text as lines with position information.
  • Extended flow document headers/footers over the left/right page margins.


  • Some palette based TIFF images are not converted correctly to PDF.
  • Resources from upper /Pages nodes are not extracted when the extracted page includes a /Resources dictionary.
  • Flattened field values are not displayed correctly...

Released: Jan 28, 2021

10.5.x での更新項目


Updated Mar 30, 2021


  • SignatureDictionary property is now available for all signatures.


  • Code128 barcode cannot drawn on PDF page.
  • Some CCITT G4 TIFF images are not converted correctly to PDF.
  • Single char Code128 barcode cannot drawn on PDF page.
  • Some encrypted documents are not loaded correctly.
  • Document cannot be saved in progressive mode when pages contain self referencing form XObjects.
  • Annotations are not flattened correctly if the document already contains flattened...

Released: Oct 29, 2020

10.4.x での更新項目


Updated Dec 30, 2020


  • Added support for custom digital signatures.


  • Words cannot be extracted from PDF page.
  • QRCode quiet zones are ignored when rendering the barcode.
  • PDFFixedDocument.PDFVersion returns Unknown for PDF 2.0 files.
  • Formatted content is not properly center/right aligned when text is wrapped.


Updated Nov 30, 2020


  • Added support for TIFF LZW compression when saving images extracted from PDF files.


  • Fixed an issue where SVG image with very long...

Released: Sep 29, 2020

10.3.3 での更新項目


  • Fixed an issue where some OTF fonts are not properly embedded in the PDF file.
  • Fixed an issue where table cells are not tagged correctly in some situations.
  • Fixed an issue where position of rotated text is not computed correctly in some situations.

Released: Aug 28, 2020

10.3.2 での更新項目


  • Text drawn using Unicode TrueType fonts created from other Unicode TrueType font cannot be extracted.
  • Some rows are not displayed when the a table is split across pages.
  • The size of extracted text fragments is not correct when the text uses Type3 fonts.

Released: Jul 31, 2020

10.3.1 での更新項目


  • Added VisualBounds property to PdfVisualObject class.
  • Flow table layout is not performed correctly.
  • Flow table layout is not performed correctly when cell span breaks on page boundary and a new cell span follows it.
  • Existing page content becomes garbled when adding new content to the page.
  • String cells reset their alignment when the parent row is split across pages.
  • Existing digitally signed PDF files cannot be saved.
  • Digital signature cannot be validated is some situations.
  • Flow...

Released: Jun 26, 2020

10.3.0 での更新項目


  • Load digital signatures from signed PDF files.
  • Decode existing signatures into basic ASN.1 blocks.
  • Extract the certificate from digital signatures.
  • Save the signed copy of a PDF document.
  • Added support for partially loading of COS stream objects.


  • In partial load mode the indirect reference objects cannot be read.
  • SVG with <use> node is not converted correctly to PDF.
  • Extracted page appears to be cut when inserted into new document.
  • Flow table layout cannot be performed in some...

Released: May 27, 2020

10.2.3 での更新項目


  • SVG is not converted to PDF because viewbox is not parsed correctly.
  • Visual objects cannot be extracted from PDF page, the result contains only a few objects.
  • Text position is not computed correctly when it uses a Type3 font.
  • SVG with masked image is not converted correctly to PDF.
  • Page content cannot be extracted if page rotation is 360.

Released: Apr 30, 2020

10.2.2 での更新項目


  • Opacity for fill/stroke in SVG is not handled correctly in some situations.
  • Hanging parts of characters p,q,g,j,y are cut when filling fields that have height almost identical to font size.
  • In some situations auto-tagging generates an exception on flow table headers.
  • StackOverflowException is thrown when loading a PDF form with invalid circular links in form definition.
  • PdfPageInfo.Width property throws NullReferenceException with some files.
  • Annotation is not flattened in the correct...

Released: Mar 31, 2020

10.2.1 での更新項目


  • Changed behavior - a PdfPage that belongs to a PdfFixedDocument cannot be added to another PdFixedDocument as this can lead to subtle bugs in the generated PDF file.


  • Rotate transform in SVG is not handled correctly in some situations.
  • Some percentage size and positions in SVG are not handled correctly.
  • WIN - PDFImage objects cannot be drawn on the page when they are created from a 32bit RGB bitmap.
  • Text extraction fails with exception when encountering invalid Type 0 fonts.