Password Protect PDF Online
Choose a PDF and enter a password of at least eight characters. Create a new PDF with AES-256 encryption in your browser so readers need the password to open it.
Your PDF and password are processed in this browser and are not sent to FileBangla servers.
How to use it
- Choose an unprotected PDF of up to 25 MB.
- Enter and confirm a password of at least eight characters.
- Download the protected PDF and test opening it with the password.
What to know
Keep the password safe: this tool cannot recover a lost one. Encryption controls opening the file; printing or editing restrictions shown by PDF readers depend on the reader. Changing a digitally signed PDF invalidates its signature, so signed files are rejected. Your original stays unchanged. Maximum 25 MB.
Frequently asked questions
What password should I choose?
Use a hard-to-guess password with at least eight characters, and store it safely. This tool cannot recover it if you lose it.
Will my original PDF change?
No. A separate protected PDF is downloaded and your selected original stays unchanged.
Are my PDF and password uploaded?
No. The file and password are processed in your browser and are not sent to FileBangla servers.