GroupDocs.Redaction for .NET 26.9 – September 2026 Release Notes

GroupDocs.Redaction for .NET 26.9 completes the move away from System.Drawing and improves cross-platform support for Linux and other supported operating systems.

Stop Decrypting Documents Just to Compare Them - Encrypted PDF and Word Diffs in .NET

Comparing encrypted documents usually starts with a decryption step nobody wants in the pipeline. This guide shows how GroupDocs.Comparison for .NET opens protected PDF and Word files directly, how PasswordSaveOption decides what guards the result, and why a missing password throws later than you expect.

How to Control External Resource Loading in GroupDocs.Comparison for .NET: Comparing Default Behaviour, Full Blocking, and Whitelisting

Discover how to stop compared documents fetching remote images in GroupDocs.Comparison for .NET. This practical guide compares default loading, full blocking, and URL-fragment whitelisting with working code examples.

GroupDocs.Conversion for .NET 26.9 – September 2026 Release Highlights

GroupDocs.Conversion for .NET 26.9 introduces new GIS and compression formats, HTML slideshow conversion, TIFF enhancements, and tighter evaluation limits.

GroupDocs.Merger for .NET 26.9 – September 2026 Release Highlights

The September 2026 release (v26.9) introduces row‑wise spreadsheet joining, TIFF PageBuilder enhancements, improved licensing exceptions, accurate preview dimensions, and critical concurrency fixes.

GroupDocs.Comparison for .NET 26.9 – September 2026 Release Highlights

GroupDocs.Comparison for .NET 26.9 is here.

GroupDocs.Metadata for Python 26.9 – September 2026 Release Highlights

Version 26.9 of GroupDocs.Metadata for Python introduces a CLI, five new archive formats, PowerPoint support restoration, engine upgrades and key compatibility fixes.

Sign an Encrypted PDF Without Unlocking It: Four Password Paths in Python

An encrypted PDF can be signed without ever writing a decrypted copy: LoadOptions opens it in place and SaveOptions decides whether the signed output keeps the old password or gets a new one. This article compares the four password paths, including the two that fail, and explains why the failures arrive as RuntimeError rather than as the exception types the API names.

GroupDocs.Viewer for Python 26.9 – September 2026 Release Highlights

Version 26.9 introduces cross‑platform Project file rendering, Word page‑numbering, DPI settings, and removes libgdiplus dependencies.

GroupDocs.Conversion for Python 26.9 – September 2026 Release Highlights

Version 26.9 introduces ConversionEvents, new diagram formats, CAD options, and critical bug fixes.