Don't trust us.
Test us.
"Your files never leave your device" is a claim every file site makes. Ours is checkable in about 90 seconds with tools already built into your browser. Here is the exact test — run it on any tool, any file, any time.
Open any tool
For example Compress Image or Merge PDF. Don't select a file yet.
Open your browser's network inspector
Chrome / Edge: press F12 (or Ctrl/Cmd+Shift+I) → "Network" tab. Firefox: Ctrl/Cmd+Shift+E. Safari: enable the Develop menu in Settings → Advanced, then Develop → Show Web Inspector → Network. Optionally click the 🚫 icon to clear the list so it starts empty.
Process a real file and watch the list
Select a file, run the tool, download the result. Watch the network list while it works. You will see the page load its own code (scripts, styles, the PDF worker — all from this site's own domain). What you will not see: any request that sends your file anywhere. No POST with your file's size. No upload progress. The work happens in the tab; the proof is the silence.
Try to catch us
Go offline after the page loads (DevTools → Network → "Offline") and run the tool again. Most tools still work with no connection at all — the strongest evidence there is that processing is local. (Tools whose engine hasn't loaded yet will need one reload online first.)
Watch the test (recording coming)
A 60-second screen recording of this exact test will be embedded here — until it is, the four steps above are the same thing, performed by you, which is better evidence anyway. If your test ever shows different behavior, email us immediately — that would be a serious bug and it jumps every queue.