Protect a PDF with a password
Lock a PDF with a password. Free, no sign-up, and neither your file nor your password is ever uploaded.
Drop a PDF here
or
Up to 25 MB · once a day for free
Loading the engine…
Working, in your browser…
Done.
Do this offline, as often as you like
Pagewerk for iPhone, iPad and Mac does this without limits, offline, with 30+ tools.
That was today’s free protection
You can use it again tomorrow. Files over 25 MB need the app.Runs in this browser tab. Nothing is uploaded.
Why Pagewerk
Private
It happens on your device, not on a server. Your file is never uploaded.AES-256 encryption
Locked files stay locked. The password never leaves this browser tab.No watermarks
Free means free: no watermark, no sign-up, no ads.How to protect a PDF with a password
- Choose your PDF or drop it on this page.
- Type a password twice.
- Click Protect PDF, then Download. Keep the password somewhere safe.
In your browser or in the app?
| Browser | App | |
|---|---|---|
| Price | free, once a day | free; Pro for extra options |
| File size | up to 25 MB | files over 25 MB too |
| Works offline | – | yes |
| Many files at once | – | coming |
Questions
Is it really free? Yes, once a day for files up to 25 MB. The apps have no daily limit.
Can Pagewerk read my file? No. The tool runs in your browser; we never receive the file.
What if I forget the password? Keep it somewhere safe. The password is never sent to us, so we can’t look it up for you.