Picture published by the creator on GitHub.

Edit, sign, and convert PDFs without uploading them anywhere

Made by Stirling Tools

Stirling PDF is an open-source toolbox of 50+ PDF tools: edit, merge, split, sign, redact (permanently black out text), convert, compress, and OCR (turn scanned pages into searchable text).

It runs as a desktop app, in the browser, or self-hosted, which means you run the server on your own machines. Documents never have to leave those machines. Automation is covered by no-code pipelines and a REST API (a web interface other programs can call), and the interface ships in 40+ languages.

Can I use this?

Desktop app, browser, or self-hosted

You'll need A computer; self-hosting is optional · Setup needed

Worth knowing Redaction and signing are the features to check most carefully: verify the output yourself before relying on it legally. GitHub lists the licence as "Other" rather than a standard one, so read the licence file before commercial use. BuildTube has not run or verified this software.

Why it's here

529 people starred it on GitHub this week — 93,473 in total.

Numbers from the snapshot taken 3 October 2026; not refreshed since.

Behind it

See the code on GitHub

BuildTube has not run or verified this project. Everything above is written from what the creator published.

Made this?