Release History

Progress® Telerik® Document Processing 2026.2.514

May 14, 2026

What's New

NEW

• The output stream is now automatically cleared before exporting, preventing corrupted documents when reusing a stream that already contains data.
• Document Processing NuGet packages are now published on NuGet.org for easier discovery and consumption.

Breaking Changes

• Removed all obsoleted APIs.

PdfProcessing

NEW

• Handled import of documents with missing/invalid rectangle (re) operands.
• Handled invalid ASCII85Decode filter scenario - PDF streams where the end-of-data marker contains whitespace.
• Import-export support for ShadingType 1.
• Import-export support for ShadingType 4.
• Import-export support for ShadingType 6.
• Import-export support for ShadingType 7.
• Exposed internal GrayColor object.
• Introduced support for signing multiple Signature fields.

FIXED

• А NullReferenceException is thrown when exporting a document with a Type 3 font with missing/invalid Unicode mapping.
• PdfStreamWriter: Duplicated page content due to incorrect caching mechanism.
• PdfStreamWriter: Slow performance during page splitting.
• SkiaImageFormatProvider: NullReferenceException is thrown when exporting pages containing images with missing optional ColorSpace.
• XMP metadata is unescaped during import-export.
• Document password cannot be resolved when document produced by the library contains a SignatureField.
• Hidden PDF layers are imported as visible.
• An Invalid PDF document is exported when inserting a specific Jpeg image with an ICC profile.
• A password is asked although Adobe opens the document without one.

SpreadProcessing

NEW

• Cell rotation is now respected when exporting the workbook to PDF.
• Introduce calculation chain functionality.

FIXED

• Pasting a range in filtered rows overwrites their content.
• Formatting string #.##0,00;-#.##0,00;;@ does not hide zero values
• Images don't move with cells when a row/column is inserted
• When setting value in a cell, certain strings are recognized as dates instead of as text.

WordsProcessing

NEW

• Introduced support for the Markdown file format, allowing import/export from/to markdown format.
• TxtFormatProvider: Introduced support for export of Lists.

FIXED

• Font of a style is changed on RTF import when the font is not explicitly defined in the style, and default character properties ('\defchp') have font defined or \defchp is missing altogether.