How we prove nothing is uploaded
Your documents never leave your phone. Here’s how that works, and how to check it yourself.
The tools run on your device
When you merge, compress or convert a PDF here, the work happens in your browser, on your phone or computer. Your files are not uploaded to us or to anyone else. The page downloads the tool once, then does everything locally.
That matters more for documents than for anything else. Bank statements, contracts, payslips, passports and medical letters are exactly the files people put through PDF websites, and most of those sites upload them to a server and promise to delete them later. Here there is nothing to delete, because nothing arrives.
Check it in five seconds: airplane mode
Open a tool, then turn on airplane mode or switch off Wi-Fi. Pick a PDF and use the tool. It still works, because nothing needs to be sent anywhere. After your first visit the tools keep working offline.
Check it like a developer: the browser lock
Every tool page carries a strict Content Security Policy that includes connect-src 'none'. That tells your browser to block the page from sending data to any server, including ours. It isn’t a promise from us; your browser enforces it. You can see it in the page source, and you can watch the Network tab in your browser’s developer tools while you work: no requests carry your files.
There are no third-party scripts, no ads and no trackers on this site, and every script is loaded from our own domain with an integrity check. Fonts and the PDF reader’s data files come from our own domain too.
What we do record
Like any website, our hosting provider’s servers log basic requests: which page was asked for, when, and the browser type. We use these logs to count visits. We don’t use analytics scripts or tracking pixels.
We set one cookie, and only if you pick a language from the language menu. It is called lang and holds the language you picked, so the homepage opens in that language next time. It isn’t used for anything else and expires after a year. Because it only remembers a choice you made, there is no cookie banner.
If you switch to dark mode, that choice is saved in your own browser’s storage on this device, and it’s never sent to us. None of this includes your documents, because they never reach us.
No tool uses a server
Every tool on this site runs on your device. If a job can’t be done well on a phone, we don’t offer it, rather than send your documents to a server.