Protect PDF with a Password
Add a password so the PDF cannot be opened without it, and optionally restrict printing and copying. Both the file and your password stay on your device.
Drop PDF here
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Private: files never leave your device
Frequently asked questions
Are my PDF files uploaded to a server?
No — this tool runs entirely in your browser using WebAssembly and JavaScript. Your files never leave your device, which also means there are no size limits and no queues.
What encryption is used?
Files are encrypted with AES — the standard PDF encryption every modern reader (Adobe, Preview, browsers) can open given the correct password.
What if I forget the password?
There is no backdoor — without the password the file cannot be decrypted. Keep an unprotected copy somewhere safe.