“Files are deleted after 2 hours” is not a guarantee
Classic online compressors upload your document, process it on their infrastructure and promise to delete it later. Even with the best intentions, that means your confidential file existed on machines you don't control, passed through logs and backups you can't audit, in jurisdictions you didn't choose.
The only privacy model that requires zero trust is: the file never leaves your computer. That's how this tool works — the compression engine runs inside your browser tab, like a desktop app that happens to open from a URL.
Don't trust us — verify
- Load this page.
- Turn off Wi-Fi (or switch on Airplane Mode).
- Drop your PDF and compress it. It works — because nothing needed the network.
You can also watch the Network tab in developer tools during compression: there are no upload requests to see.
A side benefit: no size limits
Because there is no upload, there is nothing to cap. The same design that protects your privacy also means a 200 MB or 1 GB file is processed as happily as a 2 MB one — see compressing large PDFs.
FAQ
How can a website compress my PDF without uploading it?
Modern browsers can run full applications locally. This page ships a PDF engine (Mozilla's PDF.js) as JavaScript; it opens your file from disk directly into the browser's memory, compresses it there and hands the result back — no network transfer involved.
How do I verify nothing is uploaded?
Open your browser's developer tools → Network tab while compressing: you'll see no upload requests. Even simpler: load the page, switch on Airplane Mode, then compress — it works fully offline.
Is this suitable for NDA / legal / medical documents?
That's exactly the use case. The file never leaves your device, so there is no third party to trust, no retention policy to read, and nothing to delete afterwards.
Do you keep any statistics about my files?
No. There is no analytics on file contents, names or sizes — the page is static and has no backend.