Everything about unlocking PDFs privately.
Is my PDF data safe? Does Zero Trace upload my files?
No. Zero Trace processes everything entirely inside your browser using JavaScript. Your PDF and your password never leave your device. Nothing is uploaded to a server, nothing is stored, nothing is logged. This is fundamentally different from online PDF unlockers, which require sending your sensitive document to a remote server.
How do I unlock a password-protected PDF?
Three steps: drag and drop your password-protected PDF into the upload area (or tap to browse), enter the password used to protect it, then choose a name for the unlocked output and tap Proceed. The unlocked PDF will download to your device immediately, with no upload required.
Does Zero Trace work without an internet connection?
Yes. Zero Trace runs entirely in your browser, so it doesn't need the internet to unlock a PDF. The easiest way to convince yourself: switch your device to offline mode by turning on airplane mode or disconnecting Wi-Fi, then come back to this page and unlock a PDF. Everything will still work, because nothing is being sent anywhere.
Can I use Zero Trace on my phone offline?
Yes. Zero Trace works on mobile browsers including Chrome, Safari, and Firefox on iOS and Android. After saving the app offline once, you can open the saved files on your phone and unlock PDFs anywhere, even on a flight or in a meeting with no internet, with the same privacy guarantees as on desktop.
Is Zero Trace free to use?
Yes, completely free. No usage limits, no watermarks added to your files, no account required, no hidden fees. All processing happens in your browser, so there are no server costs to pass on to you.
What types of password-protected PDFs can I unlock?
Standard password-protected PDFs as long as you know the password. This includes PDFs encrypted with the common AES-128 and AES-256 encryption used by Adobe Acrobat, Microsoft Office, and most PDF tools. You will need the original user or owner password. Zero Trace does not crack or guess passwords.
Will the unlocked PDF look exactly the same as the original?
Yes. Zero Trace renders each page at high resolution and recreates the unlocked document with the same dimensions, layout, and visual fidelity as the original. The output is a clean PDF you can read, print, or share without restrictions.
How is Zero Trace different from online PDF unlockers?
Most online PDF unlockers require uploading your file to their servers, where it is processed and sometimes retained for a period of time. This puts sensitive documents at risk of breach, leaks, or unauthorised access. Zero Trace runs entirely in-browser. Your file never leaves your device, so there is nothing to leak.