$ toolfu run encrypt-pdf
Encrypt PDF — Password Protect PDF Files Online Free
Add password protection to PDF files online for free. The output works in any PDF reader. 100% client-side — your files never leave your browser.
all processing runs in your browser
encrypt-pdf
input > select a PDF to encrypt
$ drop a PDF file here or click to browse
select a PDF to add password protection
or paste from clipboard (⌘V / Ctrl+V)
Adds standard PDF password protection. The output works in any PDF reader (Acrobat, Preview, Chrome, etc). 100% client-side — your files and password never leave your device.
Encrypt PDF Online
Add standard password protection to your PDF files, entirely in your browser.
Features
- Standard PDF encryption — works in any reader
- 100% client-side — nothing uploaded
- Set a password to restrict access
$ cat FAQ.md
How is the PDF encrypted?▶
Standard PDF password protection is applied. The output is a normal .pdf file that any PDF reader (Acrobat, Preview, Chrome, etc) will prompt for a password before opening.
Can I open the encrypted file in any PDF reader?▶
Yes. The output uses standard PDF encryption compatible with all major PDF readers.
Are my files uploaded?▶
No. Encryption runs entirely in your browser. Your files and password never leave your device.
What happens if I forget the password?▶
There is no recovery. The file cannot be opened without the correct password.