PDF security · Permission only

Unlock PDF with a known password

This page explains FácilPDF’s safe approach: only opening PDFs when the user knows the password is considered. No brute force, cracking or protection bypass is implemented.

Use tool

Known password only

This page documents the safe unlock approach. It does not perform cracking, brute force or protection bypass.

How to use this tool

  1. Verify that you know the password and have permission to modify the document.
  2. Do not use tools that promise to break passwords or bypass protections.
  3. Use a trusted desktop solution if you need to export an unlocked copy.

Private, fast and no installation

FácilPDF prioritizes tools that run in your browser. Whenever the operation allows it, your files are not uploaded to external servers.

  • Local processing
  • Free
  • In the browser
  • No installation

Tool status

Reading password-protected PDFs may work in some pdf.js-based viewers, but generating a truly unlocked and compatible copy from the browser is not reliable with the current project libraries.

What FácilPDF will not do

It will not try passwords automatically, perform brute force or dictionary attacks, bypass restrictions without permission or send PDFs to external servers.

Future implementation

This route is ready for a local solution if a library is validated that can open with a known password and export a compatible copy without backend.