Released: Dec 30, 2025

Updates in V25.12

Features

• Implemented detection and wrapping of raw URIs in mail message body.

Fixes

• Content added to PowerPoint footer is not visible when rendering to all output formats.
• Formatting of numbers, datetimes and money values is broken when converting PDF to HTML.
• PDF to HTML - Whole resultant file became a link.
• Hyperlinks in email body are not clickable.

Released: Dec 9, 2025

Updates in V25.11

Features

• Added the option to render placeholders in headers and footers of a slide.

Fixes

• Content added to PowerPoint footer is not visible when rendering to all output formats.
• Incorrect rendering of Arabic fonts when converting DOCX to PDF.
• Slow rendering speed PDF to HTML.
• Malformed text during saving PDF to HTML when custom DefaultFontName is applied.
• Intermittent character rendering errors on Windows Server 2019.
• PDF to HTML: Text not converted correctly.
• Incorrect processing of explicit...

Released: Sep 28, 2025

Updates in V25.9

Features

• Introduced a distinct font type for each formats family.
• Substituted fonts are now listed when getting all fonts for the Word Processing family formats.
• Fonts are now embedded when converting Spreadsheet documents to embedded HTML.

Fixes

• PDF attachment in base PDF in rendered to HTML format with issues.
• Gradient on background is not correct when rendering PDF to HTML.
• Failed to load specific PSD.
• Wrong page number displayed initially during server delays to return pages.

Released: Aug 28, 2025

Updates in V25.8

Features

• Added support for freezing the top row while rendering spreadsheet documents to HTML.

Fixes

• Exception during PDF to HTML conversion.

Released: Jul 30, 2025

Updates in V25.7

Features

• Added the ability to optionally disable preserving JavaScript when converting different formats to HTML.

Fixes

• CustomTempFonts folder is constantly growing on .NET Framework 4.6.2.
• Bug with merged letters in word when saving PPTX to HTML and images.
• Logo at the right bottom corner is missing when converting PPTX to HTML.
• JPEG to PDF rendering produces corrupted PDF that opens with errors in Adobe Acrobat.

Released: Jun 28, 2025

Updates in V25.6

Features

• Significantly improved font extractor for all formats.

Fixes

• Quality of rendering PDF to HTML has degraded from 24.3 to 25.3.
• BinaryFormatter exception in web application when working with EPS format.
• "CAD document rendering failed. Please check that CadOptions sizing options do not have too low or too high values." exception when rendering DXF or DWG file.
• "Specified units are not supported:" exception when rendering TEX file.
• "Unknown character - " exception when rendering ODG file...

Released: May 29, 2025

Updates in V25.5

Features

• Added PathBase support in ASP.NET Core.
• Improved performance by displaying actual image pages instead of thumbnails.

Fixes

• Slow performance and huge memory consumption of small 2-page PDF file.
• Fixed issue with incorrect picture location in Worksheet.
• Cannot view DXF.
• "Invalid Base." exception when rendering PS file.
• "CAD document rendering failed" exception when rendering DWF file.
• 3D drawing is not showing in GroupDocs Viewer.
• "Could not load file. File is corrupted or damaged...

Released: Apr 29, 2025

Updates in V25.4

Features

• Added the ability to search the text spans in loaded documents and highlight the found text.
  • Searching text is supported for almost all document family formats, which may have textual content: all formats within WordProcessing family (DOC, DOCX, ODT, RTF, etc.), Spreadsheet (XLS, XLSX, ODS, CSV, etc.), Presentation (PPT, PPTX, PPS, POT, etc.), e-Books (ePub, AZW3, Mobi), and fixed-layout formats (PDF and XPS).
  • Search may be performed by entered search term (text literal) or by a regular...

Released: Mar 27, 2025

Updates in V25.3

Features

• Added support for Windows Imaging Format (WIM) archive format.
• You can now return all fonts used in input document via public API.
• You can now render content of inner archives inside outer archives.
• You can now show a custom error message in GroupDocs.Viewer.UI.
• Released Visio family formats for GroupDocs.Viewer.CrossPlatform.
• Improved detecting whether specified XML files are truly XML.

Fixes

• Incorrect listing and order of archive entries.
• [UI] Viewer PPTX page number error.
• [UI] Excel...

Released: Feb 26, 2025

Updates in V25.2

Features

• Added support for Cabinet (CAB) archive format.
• Added the option to disable preserving JavaScript when converting different formats to HTML.
• Improved rendering of PSD (Photoshop) files to PNG format.
• Added support for last modification date for entries of CAB, ISO, and TAR archives.