Runs on this device
Protect PDF with a password
Lock a PDF with a password. The password never leaves this device.
- 1Choose or drop a PDF.
- 2Type a password. The file is encrypted with AES in your browser.
- 3Save the result, or carry on with another tool on the same file.
Drop a PDF on this page
or paste with Ctrl + V. One file at a time.
- Takes
No account, no limit, nothing uploaded.
Questions
Are my files uploaded?
No. This tool runs in your browser, so the file stays on this device. You can check: open your browser's network panel, or turn off Wi-Fi after the page loads and it still works.
Is there a limit on files or tasks?
No. There is no daily limit, no file count limit and no size cap. The only limit is your device's memory.
Do I need an account?
No. There is no sign-up, no email and no watermark on what you save.