Three compounding costs made a full folder feel sticky: - Every card and row re-rendered on ANY page state change, because item components weren't memoized and got fresh closures each render. Items now take a single stable actions dispatcher (latest-ref backed, so behavior stays current while identity stays fixed) and are React.memo — a selection click re-renders the two cards whose selection changed, not all 500. Selection-aware behavior (drag payloads, multi-move) moved into the dispatcher so items no longer hold the selection Set, whose identity changes on every click. - Each lazily generated thumbnail updated the shared stub immediately, re-rendering every file-list consumer once per thumbnail — hundreds of times as a folder fills in. Updates now flush in windows; the card itself paints instantly from local state. - Offscreen cards still paid layout and paint. content-visibility lets the browser skip them; the intrinsic size keeps the scrollbar honest.
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 dev to get started running the editor, run task to see the most common commands, 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.

