About
A student-built experiment in rethinking document privacy on the web.
Most online PDF tools upload your private documents to heavily-monitored servers just to process them. We believe that's fundamentally broken. ClientPDF is different.
We rebuilt the entire PDF processing engine to run directly inside your web browser using modern WebAssembly and JavaScript APIs. When you merge, split, compress, or protect a document, the heavy lifting happens immediately on your own processor. Your sensitive data never leaves your computer, and we never see it.
Speed is a feature. Privacy is our promise.
20+
PDF Tools
0
Server Uploads
100%
Client-Side
∞
Files Processed
The principles that drive every line of code.
Zero server uploads. No accounts. No tracking. Your documents remain strictly confined to your device’s local memory.
By skipping network upload and download phases entirely, ClientPDF operates orders of magnitude faster than cloud alternatives.
Passwords for protecting documents are utilized directly on your CPU, making man-in-the-middle attacks impossible.
Built with Next.js 15, Web Workers, and state-of-the-art browser APIs to deliver native app performance on the web.
01
Pick any tool from the dashboard — merge, split, compress, sign, and more.
02
Drag and drop or browse. Your file stays in browser memory, never uploaded.
03
Processing happens instantly on your device. Download the result and you’re done.
ClientPDF is a solo project, built and maintained by one person. No corporate backing, no VC funding — just passion for privacy-first tools.
Privacy isn't a policy — it's baked into the architecture. No hidden trackers, no analytics SDKs harvesting your data. Your files never leave your device.