Client-side
Native PDF password
No watermarks
Protect PDF
Set a password on your PDF right in the browser. Upload, add password, download locked PDF. Nothing uploaded.
Frequently Asked Questions
Is my file uploaded?
No. Protection runs locally in your browser.
What encryption?
Native PDF password protection (pdf-lib save with password).
File size limits?
Roughly 100 MB depending on device memory.
Need to remove password?
Use Unlock PDF to open with password and resave without it.
Watermarks?
No watermarks are added.
Offline?
Yes. After scripts load, protection works offline.