Unlock a PDF
Remove the open password and the print, copy and edit restrictions from a PDF whose password you know.
- Nothing is uploaded
- Works offline
- Open source
- No limits, no watermark
Done
Open the network tab. It stays empty.
Add files and run the tool to see every request this tab makes.
Your files are processed on this device and never sent to a server. Reload the page to clear everything from memory.
How it works
- Drop one or more PDFs.
- Type the password that opens them. PDFs that only restrict printing or copying need no password.
- Save copies that open without a password and have no restrictions.
In your browser, not on a server
qpdf, the open-source PDF transformation tool, compiled to WebAssembly, is served by this site and loaded into the tab when you run the tool. It checks your password and rewrites each PDF without its encryption, copying every page, font and image as they are. The password is used in memory and dropped when you close the tab.
Compared with upload-based tools: Online unlockers ask for the file and its password together, which is everything someone would need to read it. Here neither leaves your device.
Verify it yourself. Load this page, turn off Wi-Fi or switch to airplane mode, and run the tool. Or open your browser's developer tools (F12, or Cmd-Option-I on a Mac), pick the Network tab, and watch it while you convert. The panel above does the same count for you.
Questions
Can this open a PDF when I don’t know the password?
No. It removes a password you already have, so you don’t have to type it every time or so other apps can edit the file. It does not guess or crack passwords.
What about PDFs that open fine but won’t let me print or copy?
Those carry an owner password that only sets restrictions. Drop them in without a password and the restrictions are removed; the text, images and pages are left exactly as they were.
Is my PDF or password sent anywhere?
No. The PDF is decrypted inside your browser tab by qpdf compiled to WebAssembly. The password is used in the tab and never leaves it, and the page works with the network off after one visit.
More PDF tools
Merge PDF
Combine PDFs into a single document. Drag to reorder. No file limits, no watermark, nothing uploaded.
Split PDF
Pull out the pages you need, or break a document into single pages. Done on your device.
Compress PDF
Shrink PDFs for email or upload limits. Three levels, from lossless cleanup to aggressive. Processed on your device.
Rotate PDF
Fix sideways scans for good. Rotate every page or just the ones you pick, then save.