Why is it safe? Many sites upload your file to their servers. Not here: everything happens in your own browser. Your file is never sent to the internet and stored nowhere — because it is never received. It even works offline.
How it works (3 steps)
Upload your PDF.
To lock: set a new password. To unlock: enter the current password.
Tap “Encrypt & download” and save the file.
Tips
256-bit AES encryption keeps your PDF private.
Note your password — if you forget it, the file can’t be opened.
Removing a password preserves the text (no rasterizing).
FAQ
How strong is the encryption?
256-bit AES.
Is my password sent anywhere?
No — encryption happens on your device; the password never leaves it.
Are my files uploaded anywhere?
No. Everything runs in your browser; your files never leave your device.
Is it free?
Yes, completely free and unlimited. No watermark is added to the output.
Does it work on a phone?
Yes, it works in Android and iPhone browsers, and can be added to the home screen as an app.
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