What it does
PDFPatcher provides bookmarks, metadata, page organization, image extraction, document merging, font-related repairs, and internal-structure inspection. Its public repository documents the tools in Chinese.
PDFPatcher is useful when a document needs a better bookmark tree or structural cleanup. Bookmark operations include bulk property changes, regular-expression matching and automatic generation. Splitting and merging can preserve existing bookmarks. The application requires Windows and .NET Framework; its OCR route additionally depends on Microsoft Office Document Imaging, rather than a bundled modern recognition service. End-user use is described as free, but the published licence adds conditions to AGPL terms.
Strengths
- Combines detailed bookmark work with PDF structure inspection.
Watch out for
- Source reuse and redistribution carry additional custom license conditions.
Best for
- Technical PDF cleanup and navigation repair