# Description of Changes Add a backend for running any multi-step PDF operations. This is designed to be used for the upcoming Policies feature, along with anything else that will require automated running of PDF operations, like the Automate tool or Processing Folders. The implementation is not complete. I've tried to get all the infrastructure in there so that we can add in whichever triggers we need in the future (like cron triggers or watching folders on disk) but currently it just supports manual triggering of the policy. The basis of this work was the operation running from the Stirling Engine, which this PR removes in favour of this new system. The only currently accessible frontend way to test this work is to ask the AI chat to execute multiple operations on a PDF, but I've also extensively tested with direct API calls to make sure that the policies work and persist properly.
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.

