About CoolPDF
Our mission
CoolPDF exists to make everyday PDF work — merging, splitting, compressing, protecting — free, instant, and private for everyone. We believe you should never have to trade your documents for convenience, so we built a toolkit where the files stay with you and the tools come to your browser.
Why we built it this way
Most online PDF tools require you to upload your files to a server before anything happens. That means contracts, tax returns, ID documents, and medical records pass through infrastructure you do not control — servers, queues, and backups operated by someone else, under privacy policies few people read.
Modern browsers are powerful enough that none of this is necessary anymore. CoolPDF compiles industrial-grade PDF engines to WebAssembly and runs them directly on your device. The file never leaves your computer, because there is nowhere for it to go — CoolPDF has no upload servers at all.
Don't take our word for it
Privacy claims are easy to make and hard to verify, so we made CoolPDF verifiable by design:
- Disconnect from the internet after a page loads — every tool still works, because nothing depends on a server.
- Open your browser DevTools (F12), watch the Network tab while you use a tool — you will see zero file uploads.
- Read the source code. CoolPDF is open source under AGPL-3.0, so anyone can audit exactly what happens to a file.
What we don't do
The list of things CoolPDF does not do is as important as what it does:
- We do not upload your files — there is no backend that could receive them.
- We do not store your files — closing the tab removes every trace.
- We do not analyze the content of your documents.
- We do not require an account, an email address, or any personal information.
- We do not impose usage limits, watermarks, or premium tiers.
Open source
CoolPDF is free software, released under the GNU Affero General Public License v3.0 (AGPL-3.0). The full source code is available on GitHub — inspect it, audit it, or contribute to it.
Contact
Questions, feedback, or bug reports? Email us at support@getcoolpdf.com. Messages are delivered via Cloudflare Email Routing.