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locally hosted web application that allows you to perform various operations on PDF files
772dd4632e
# Description of Changes
- Reduced lightweight editor JSON size:
- Omit heavy page resources and contentStreams in lazy/lightweight
flows.
- Omit form fields in lazy metadata/editor bootstrapping flows.
- Strip inline font program blobs from lazy initial payloads.
- Added page-based font loading:
- New endpoint to fetch fonts for a specific cached page:
GET /api/v1/convert/pdf/text-editor/fonts/{jobId}/{pageNumber}
- Frontend now loads page fonts alongside page data and merges into
local doc state.
- Reduced save payload duplication:
- Partial export now sends only changed pages (no repeated full-document
font/metadata payload each save).
- Preserved round-trip/export safety:
- Missing lightweight fields (resources/contentStreams) are interpreted
as “preserve existing from cached PDF.”
- Annotation semantics fixed so explicit empty annotation lists can
clear annotations.
- Fixed a regression where lazy mode could fall back to full export and
lose overlays; lazy now stays on cached
partial export path when dirty pages exist.
- Logging/noise reduction
- Transport optimization:
- Enabled HTTP compression for JSON/problem responses. (might remove
later tho in testing)
### Outcome
- Much smaller JSON payloads for giant PDFs.
- Fewer duplicated bytes over the wire.
- Page-scoped loading of heavy font data.
- Better reliability for preserving overlays/vector/background content
during export.
## Checklist
### General
- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] 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)
- [ ] I have performed a self-review of my own code
- [ ] 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)
- [ ] 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.
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|---|---|---|
| .devcontainer | ||
| .github | ||
| .vscode | ||
| app | ||
| devGuide | ||
| devTools | ||
| docker | ||
| docs | ||
| frontend | ||
| gradle/wrapper | ||
| images | ||
| scripts | ||
| testing | ||
| .dockerignore | ||
| .editorconfig | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| .pre-commit-config.yaml | ||
| ADDING_TOOLS.md | ||
| build.gradle | ||
| CLAUDE.md | ||
| CONTRIBUTING.md | ||
| DATABASE.md | ||
| DeveloperGuide.md | ||
| gradle.properties | ||
| gradlew | ||
| gradlew.bat | ||
| HowToUseOCR.md | ||
| launch4jConfig.xml | ||
| LICENSE | ||
| README.md | ||
| SECURITY.md | ||
| settings.gradle | ||
| test_globalsign.pdf | ||
| test_irs_signed.pdf | ||
| WINDOWS_SIGNING.md | ||
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.