In developmentThis tool is still in development. It needs a server component that is not switched on yet, so it will not convert files in your browser right now. The 57 browser tools work fully today — this one is coming soon.
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Requires server
This tool needs a server — and isn't switched on
Unlike the 57 browser tools here, this one genuinely can't run in your browser. Office-format conversion, PDF encryption, and deep image compression need software that only exists server-side.
If you're the site owner: deploy the reference server in /server, then set API.enabled = true in assets/api.js.
Uploads to server
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How it works
- Applies real AES encryption using qpdf — this is actual security, not the visual deterrent that our watermark tool provides.
- The permissions flags (no printing, no copying) are honoured by well-behaved PDF readers, but they are not cryptographically enforced — a determined tool can ignore them. The open-password, however, is genuine encryption.
- If you forget the password, the file is gone. There is no recovery.
- This tool uploads your file to a server — unlike every browser-based tool here. The server processes it and deletes it immediately; it is never stored. But if that tradeoff matters to you, use the client-side tools instead, where the file provably never leaves your device.