Released: May 1, 2026

Updates in PDFView4NET Windows Forms Edition V11.3.30

Fixes

• PDF Rendering:
  • Page with damaged LZW encoded image is not rendered correctly.
  • Some pages with JPEG2000 images cannot be rendered.
• PDF Viewer:
  • Page with damaged LZW encoded image is not rendered correctly.
  • Some pages with JPEG2000 images cannot be rendered.
  • PDFPageView blocks indefinitely in some situations when changing the work mode.

Released: May 1, 2026

Updates in PDF4NET 16.2.2

Features

• PDF4NET
  • Duplicate redacted images.
  • PDFFlowTableContent.MaxRowHeight and PDFFlowTableRow.MaxHeight properties to limit the maximum height of a row.

Fixes

• PDF4NET
  • AppendFile method hangs indefinitely for some input files with invalid fields.
  • Text cannot be extracted if it is stroked with a pattern color and filled with a non-pattern color.
  • Tiff images with multiple alpha channels are not handled correctly.
  • DataMatrix actual data encoding is not selected correctly in some cases, when...

Released: Apr 1, 2026

Updates in PDFView4NET Windows Forms Edition V11.3.29

Features

• PDF Rendering and Viewer:
  • Rendering improvements.

Fixes

• PDF Viewer:
  • Highlight annotations cannot be serialized.

Released: Apr 1, 2026

Updates in PDF4NET V16.2.1

Features

• PDF4NET
  • Create PDFRawImage objects from COS image streams.
  • Added PDFDocumentFileAttachment.GetPayloadStream method for efficient access to large attachments.
• PDF4NET.View
  • WinForms - You can now select annotations outside page area.

Fixes

• PDF4NET
  • StructureTree cannot be loaded for some PDF files.
• PDF4NET.View
  • Loading a PDF file in incremental mode in PDFDocumentView throws an IO exception.
  • PDFDocumentView hangs on document load when running on .NET 10.
  • WinForms - PDFDocumentView...

Released: Mar 4, 2026

Updates in PDF4NET V16.2.0

Features

• PDF4NET
  • Added support for PDFFowTableContent horizontal align.
• PDF4NET.View
  • Added annotation tooltips.
  • Added show/hide annotations.
  • Added show/hide form fields.
  • Added show/hide the page number indicator (bottom left corner).

Fixes

• PDF4NET
  • Fixed some 1bpp images which were not redacted correctly.
• PDF4NET.View
  • PDFDocumentView crashes when an annotation is added in PageRenderingCompleted event.
  • Some documents were displayed incorrectly because of caching across documents.

Released: Mar 4, 2026

Updates in PDFView4NET Windows Forms Edition V11.3.28

Features

• PDF Rendering:
  • Rendering improvements.
• PDF Viewer:
  • Rendering improvements.
  • Free text annotations are now included in the PDFAnnotationsView control.

Released: Feb 1, 2026

Updates in PDF4NET V16.1.2

Features

PDF4NET

• Added support for page transparency group.
• PDF/A-1 validation now checks the presence of page transparency group.

PDF4NET.View

• Memory usage improvements.

Fixes

PDF4NET

• Colorspaces are not extracted from PDF file.
• Some existing PDF files are resaved incorrectly.

PDF4NET.Render

• Some text is not displayed because the backing TrueType font is invalid.
• Page with invalid font cannot be rendered, throws stack overflow exception.
• Text is not rendered correctly, characters are scrambled.

Released: Feb 1, 2026

Updates in PDFView4NET Windows Forms Edition V11.3.27

Fixes

PDF Rendering:

• Some text is not displayed because clip paths spread across q/Q boundaries.

PDF Viewer:

• Some text is not displayed because clip paths spread across q/Q boundaries.

Released: Jan 5, 2026

Updates in PDF4NET V16.1.1

Features

PDF4NET

• PDFTextExtractionOptions has been renamed PDFTextExtractionContext.
• PDFContentExtractionContext.TextExtractionOptions has been renamed PDFContentExtractionContext.TextExtractionContext.

Fixes

PDF4NET

• Field border definition is generated even if it is not stroked.
• An exception is thrown when a multiline textbox field does not have a size and a color is set on it.
• Some existing PDF files are resaved incorrectly.
• Some incremental updates are not performed correctly.

PDF4NET.Render...

Released: Jan 5, 2026

Updates in PDFView4NET Windows Forms Edition V11.3.26

Fixes

PDF Rendering

• Damaged file could not be loaded.
• Thin lines were rendered very faint at high resolution.

PDF Viewer

• Damaged file could not be loaded.
• Thin lines were rendered very faint at high resolution.