100% Free online PDF tools. Merge, split, compress, and convert PDFs for free right in your browser. No sign-up, no subscriptions, no file size caps, and 100% private.

I'm a postgraduate Electronics student, and I built PDF Toolkit because I kept running into the same problem: most free PDF tools online quietly upload your files to a server to process them — which felt unnecessary, and a little unsettling for things like ID scans, certificates, or personal documents. So I built this to run entirely in your browser using WebAssembly. Right now it handles: 🔹 Merge, Split, Compress 🔹 Image ↔ PDF conversion 🔹 Rotate, Rearrange & Delete pages 🔹 Add Watermark 🔹 Password protect / Unlock PDF No sign-up, no watermarks on your output, no file limits — and nothing ever leaves your device. This is very much a solo, ongoing project, so I'd genuinely love your feedback — bugs, missing features, or tools you'd want added next. Thanks for checking it out! 🙏

Merged a 40-page contract in seconds and never had to create an account, which honestly felt almost rebellious in a good way. The no file size cap part is what really sold me.

@udell_lin Thank you, Quinn! 🙏 Honestly the "no account needed" part was the whole point for me too — I got tired of tools gatekeeping basic functionality behind a sign-up wall. Really glad it handled a 40-page contract smoothly, that's a good stress test! Let me know if you run into anything else while using it.

Merged a 40-page contract in seconds and never had to create an account, which honestly felt almost rebellious in a good way. The no file size cap part is what really sold me.

PDF Toolkit

Your files never leave your device. Free PDF tools

Your files never leave your device. Free PDF tools