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Anthony StirlingandGitHub
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## Summary Migrates `SplitPDFController`, `SplitPdfByChaptersController`, `SplitPdfBySizeController` from PDFBox to JPDFium. `SplitPdfBySectionsController` and `AutoSplitPdfController` are intentionally left on PDFBox (require JPDFium 1.0.2 features that don't exist yet). ## Benchmark (audited on `audit/jpdfium-split`, file `app/core/src/test/java/stirling/software/SPDF/bench/SplitBenchmark.java`) | Workload | PDFBox heap | JPDFium heap | PDFBox wall | JPDFium wall | |---|---|---|---|---| | 100 pp, chunk 10 | +21-26 MB | **+0.02 MB** | 80-106 ms | **25 ms** | | 300 pp, chunk 10 | +59 MB | **+1.0 MB** | 232 ms | **76 ms** | **98-99.9% heap reduction. 3-4.2x faster wall.** ## Hybrid - AcroForm-bearing splits keep PDFBox `FormUtils.pruneOrphanedFormFields` post-pass (FPDF_ImportPagesByIndex drops AcroForm dict). Sub-bench shows +1.0 MB / +27 ms - tightly bounded. - Metadata extraction stays on PDFBox. - `SplitPdfBySectionsController` - JPDFium `PdfPageSplitter` only does 2-up halving, not arbitrary MxN. - `AutoSplitPdfController` - needs PDFRenderer + zxing for QR markers. ## Test plan - [ ] 30/30 unit tests pass with PDFBox `Loader.loadPDF` as the oracle (assert page counts + document totals) - [ ] Existing cucumber feature `split.feature` continues to pass - [ ] AcroForm-bearing PDF round-trips without orphaned widgets (covered by existing FormUtils tests)
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.
This project uses Task as a unified command runner for all build, dev, and test commands. Run task install to get started, or see the Developer Guide for full details.
For adding translations, see the Translation Guide.
License
Stirling PDF is open-core. See LICENSE for details.