Lock a PDF with a password, or remove a password you already know — with real encryption that happens right on your device.
🔒 100% private — your files never leave your device
↪ Received from another tool
Drag & drop your PDF
or click to browse — one file at a time
PDF
How it works
Pick protect or unlock, add your PDF, and you're done — no sign-up, no upload.
1
Add your PDF
Drop in the file you want to lock or unlock. It stays on your device.
2
Set the password
Choose a new password to protect it, or type the current one to unlock it.
3
Download the file
One tap saves your protected or unlocked PDF — encrypted right here in the browser.
🔒
Private by design. The encryption and unlocking both happen inside your browser. Your file and your password are never uploaded — we never see them.
🛡️
Real encryption, honestly. A password scrambles the file with AES — AES-256 where your PDF supports it, AES-128 otherwise. Both are strong. Keep your password somewhere safe: if you lose it, there's no way to open the file again.
Frequently Asked Questions
How strong is the password protection?▼
Your PDF is scrambled with real AES encryption, so without the password its contents genuinely can't be read. Choose a strong password and store it somewhere safe.
Can I remove a password I already have?▼
Yes. Switch to Unlock, enter the current password, and we'll save an open copy that no longer asks for one.
What if I've forgotten the password?▼
Then it can't be removed — that's the whole point of encryption. You need the correct password to unlock a protected PDF, and there's no way around it.
What are the reader permissions for?▼
They ask the PDF reader to limit things like printing, copying or editing. They're a request, not real security — many tools can ignore them, so the password is the part that actually protects your file.
Does protecting a PDF change its pages?▼
No. The pages, text and images stay exactly as they are — only a password and encryption are added around them.
Is my PDF uploaded anywhere?▼
No. Everything runs entirely in your browser on your own device. Your file and your password are never uploaded and we never see them.