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# Description of Changes Upgrades embedPDF from v2.5.0 to v2.6.0 and migrates from unmaintained pdf-lib to @cantoo/pdf-lib fork. Adds defensive error handling for malformed PDFs and improves bridge lifecycle management. ### Changes **Dependencies** - Upgrade all @embedpdf/* packages from ^2.5.0 to ^2.6.0 - Replace pdf-lib with @cantoo/pdf-lib (maintained fork with better TypeScript support) **PDF Viewer Infrastructure (attachment/bookmark fix)** - Add useDocumentReady hook to track document lifecycle across bridges - Implement defensive bridge cleanup to prevent stale registrations - Fix race condition in document ready state detection by subscribing to events before checking state **Link Extraction (updated to cantoo/pdf-lib)** - Add graceful error handling for PDFs with invalid catalog structures - Extract enhanced link metadata (tooltips, colors, border styles, highlight modes) - Return empty results instead of throwing on malformed PDFs - Add validation for link creation (destination page bounds, rect dimensions, color values) **Signature Flattening (updated to cantoo/pdf-lib)** - Improve SVG embedding with three-tier fallback strategy (native vector, rasterized PNG, placeholder) - Add proper Unicode handling for PDF form tooltips via PDFString.decodeText() - Extract SVG utilities into cleaner strategy pattern **Form Field Processing (updated to cantoo/pdf-lib)** - Add support for display labels vs export values in dropdown/list fields per PDF spec 12.7.4.4 - Implement caching for expensive field property lookups - Add proper handling of malformed /Opt arrays <!-- Please provide a summary of the changes, including: - What was changed - Why the change was made - Any challenges encountered Closes #(issue_number) --> --- ## Checklist ### General - [X] I have read the [Contribution Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md) - [X] I have read the [Stirling-PDF Developer Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md) (if applicable) - [ ] I have read the [How to add new languages to Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md) (if applicable) - [X] I have performed a self-review of my own code - [X] My changes generate no new warnings ### Documentation - [ ] I have updated relevant docs on [Stirling-PDF's doc repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/) (if functionality has heavily changed) - [ ] I have read the section [Add New Translation Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags) (for new translation tags only) ### Translations (if applicable) - [ ] I ran [`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md) ### UI Changes (if applicable) - [ ] Screenshots or videos demonstrating the UI changes are attached (e.g., as comments or direct attachments in the PR) ### Testing (if applicable) - [X] I have tested my changes locally. Refer to the [Testing Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing) for more details. --------- Signed-off-by: Balázs Szücs <bszucs1209@gmail.com>
Stirling PDF - The Open-Source PDF Platform
Stirling PDF is a powerful, open-source PDF editing platform. Run it as a personal desktop app, in the browser, or deploy it on your own servers with a private API. Edit, sign, redact, convert, and automate PDFs without sending documents to external services.
Key Capabilities
- Everywhere you work - Desktop client, browser UI, and self-hosted server with a private API.
- 50+ PDF tools - Edit, merge, split, sign, redact, convert, OCR, compress, and more.
- Automation & workflows - No-code pipelines direct in UI with APIs to process millions of PDFs.
- Enterprise‑grade - SSO, auditing, and flexible on‑prem deployments.
- Developer platform - REST APIs available for nearly all tools to integrate into your existing systems.
- Global UI - Interface available in 40+ languages.
For a full feature list, see the docs: https://docs.stirlingpdf.com
Quick Start
docker run -p 8080:8080 docker.stirlingpdf.com/stirlingtools/stirling-pdf
Then open: http://localhost:8080
For full installation options (including desktop and Kubernetes), see our Documentation Guide.
Resources
Support
- Community Discord
- Bug Reports: Github issues
Contributing
We welcome contributions! Please see CONTRIBUTING.md for guidelines.
For development setup, see the Developer Guide.
For adding translations, see the Translation Guide.
License
Stirling PDF is open-core. See LICENSE for details.