Sign PDFs from Python in Docker: Two Layers Your Image Is Missing
A Python signing script that runs on a laptop fails twice in a slim container: once because the .NET binding has no libssl or libicu, and again because the image has no fonts and GroupDocs.Signature will not substitute a missing family. This tutorial builds both layers and the resolution code that keeps the script portable.
Signing in a Linux Container: Fonts, Glyphs and Working Dockerfiles
GroupDocs.Signature does not substitute a missing font: name a family the image does not have and the call raises an error instead of falling back. Since the .NET runtime image ships zero fonts, a text signature fails there until you add a font layer. This article compares the fontless image with the fixed one and shows how to resolve a family at run time.
Signing PDFs from Node.js in Docker: Three Ways to Pick a Font
GroupDocs.Signature for Node.js runs a JVM in process, so containerising it means provisioning a JDK and fonts before any signing works. This article compares the three ways to choose a font family - hard-code it, detect it from filenames, or probe the library - and covers the binding quirks that shape the code around them.
The Font Bill Comes Due Later: Java Container Signing and CJK
Java container images bundle DejaVu for AWT, which is enough to sign English text and not enough for anything else. This article looks at what that partial coverage costs a document workflow, why GroupDocs.Signature fails rather than substituting, and how a font layer plus run-time family resolution turns an incident into a startup check.
How to Remove PDF Metadata in C#: Sanitize vs Author-Only Cleanup
Legal and ops teams still leak Author and XMP from contract PDFs. This guide compares full Sanitize() wipes and selective author removal in GroupDocs.Metadata for .NET with inspect and verify steps.
GroupDocs.Watermark for .NET 26.9 – September 2026 Release Highlights
GroupDocs.Watermark for .NET 26.9 is here.
GroupDocs.Metadata for .NET 26.8 – August 2026 Release Highlights
GroupDocs.Metadata for .NET 26.8 introduces support for five new archive formats (AAR, GZIP, BZ2, XZ, ZSTD) and updates underlying Aspose components.
GroupDocs.Viewer for .NET 26.8 – August 2026 Release Highlights
GroupDocs.Viewer for .NET 26.8 introduces TFM-split packaging, hidden PDF annotations, DPI control and page numbering for Word docs, plus eight critical bug fixes.
GroupDocs.Conversion for .NET 26.8 – August 2026 Release Highlights
GroupDocs.Conversion for .NET 26.8 enhances CAD conversion with per-layout output and layout scope control, adds XAR/CAB archive support, Mermaid MMD and Drawio diagram interoperability, and resolves 10+ critical bugs across PDF, DOCX, PPTX, and EML conversions.
GroupDocs.Comparison for .NET 26.8 – August 2026 Release Highlights
