Protect PDF

Add password protection to PDF files or remove existing passwords. Free browser-based tool for secure PDF handling.

✓ Set open password✓ Set permission password✓ Remove existing password✓ Browser-based, secure and reliable

Upload PDF

Add password protection

Drag files here, or click to select

Supports files up to 50.00 MB

Encryption guide

🔒 Open password: Required to open the PDF

🔑 Permission password: Can restrict printing and other rights

⚠️ Remember passwords — they cannot be recovered if lost

🔒 Processing stays in your browser

Support

Frequently Asked Questions

Yes, all processing is done in your browser. Your PDF and passwords never leave your device.
If you know the password, you can remove protection in the browser. We cannot crack unknown passwords.
No. PDF encryption and decryption run fully in your browser.

Quick start

How to Use Protect PDF

1

Upload PDF

Upload the PDF you want to protect or unlock.

2

Choose mode

Switch between encrypt and decrypt.

3

Set password

Enter passwords and optional permissions.

4

Download

Download the protected or unlocked PDF.

Explore more

Related Tools

Merge PDF

Combine multiple PDF files into one document. Free, no registration, fully browser-based. Arrange files with up/down controls before merging.

Open

Split PDF

Split PDF files into multiple documents. Extract specific pages or split by page range. Free and browser-based.

Open

Compress PDF

Reduce PDF file size while maintaining quality. Choose from basic, moderate, or maximum compression levels. All browser-based.

Open

PDF to Image

Convert PDF pages to high-quality JPG or PNG images. Every page is exported with adjustable resolution. Free browser-based tool.

Open

About this tool · PDF Tools

Free online protect pdf: how Protect PDF works

Protect PDF on TextExtraction.online is a free protect pdf tool for encrypt pdf, add password to pdf, pdf password. Add password protection to PDF files or remove existing passwords. Free browser-based tool for secure PDF handling. Processing runs in your browser, so files stay on your device for privacy.

Why use this free protect pdf tool?

  • Set open password
  • Set permission password
  • Remove existing password
  • Browser-based, secure and reliable
  • No registration required for standard use — open the page and start immediately.
  • Works on phone, tablet, and desktop modern browsers with a mobile-friendly layout.

When to use Protect PDF

Choose Protect PDF when you need a free online protect pdf workflow without installing desktop software. Browser PDF utilities are ideal for quick merge, split, compress, rotate, protect, and convert tasks. For more free OCR and document tools, return to the TextExtraction homepage.