Password-protect your PDF

Protect sensitive documents before you share them

or drop files here.

Size up to 100 MB

By uploading a file, you agree to our Terms of Use and acknowledge our Privacy Policy

How to password-protect your PDF

  1. Download your first file for free. To continue using PDF Genius, choose one of our subscription plans.
  2. Upload or drag & drop your document into the upload area.
  3. Use the 'Secure' tool to set access permissions and click OK.
  4. Download the protected document to your device.

Why protect your PDFs with PDF Genius

Reliable PDF Password Protection

Protect PDF files with a reliable password protection tool. Secure sensitive documents, prevent unauthorized access, and keep your personal, business, and confidential information safer.

No Data Retention

Protect your PDF documents online without long-term data retention. PDF Genius is designed to keep your files private and give you greater control over your document security.

On Mac, Windows, and Linux

Use PDF Genius to password-protect PDF files on Mac, Windows, and Linux. Secure your documents from any desktop operating system without installing complicated software.

Secure Encryption for Max. Safety

Add an extra layer of security with encrypted PDF protection. Safeguard confidential reports, financial documents, legal files, and private information from unauthorized access.

Password Strength for Added Security

Create stronger PDF passwords with password strength guidance. Use a secure combination of characters to improve document protection and reduce the risk of unauthorized access.

Password - Protection in the Cloud

Protect PDF files securely in the cloud and access your documents from anywhere. Keep important files password-protected while maintaining a flexible, modern workflow.

Built-in protection for sensitive documents

PDF Genius offers a simple way to restrict your sensitive documents with strong passwords. It ensures that only authorized users can access, print, or modify the content. The process is easy: upload your PDF, set a password, and download the protected file in just a few steps — no need for expensive and complicated software.

Trusted by people who work with sensitive PDFs

  • Maya Chen

    I only needed to change a few lines in a contract, and it took less than five minutes.

    July 18, 2026

  • jordanwrites

    best of best 🤩

    July 31, 2026

  • Lucas Ferreira

    The layout stayed exactly the same after I changed the text. That was the part I was most worried about.

    July 11, 2026

  • Nina Patel

    Used it to update an old invoice. Everything was straightforward and the export looked clean.

    July 30, 2026

  • Sam R.

    Pretty impressed with how quickly it processed my file. No unnecessary steps.

    July 25, 2026

  • claire.m

    I had to fix a scanned document for work and the text recognition worked better than expected.

    August 1, 2026

  • Omar Haddad

    This saved me from recreating an entire PDF from scratch. Definitely keeping it bookmarked.

    July 18, 2026

  • ellie_w

    The interface feels simple, but it still has all the tools I actually need.

    July 3, 2026

  • Thomas Nguyen

    I edited a 20-page document without any formatting issues. Really smooth experience overall.

    July 16, 2026

  • Priya Shah

    Needed to add comments and highlight a few sections before sending the file. Worked perfectly.

    July 27, 2026

  • Alex Morgan

    Not usually a fan of online PDF tools, but this one was quick, clear, and didn’t feel complicated.

    July 20, 2026

  • Renée Dubois

    I used it for a last-minute application update and finished everything from my laptop in a few minutes.

    July 13, 2026

Protect your PDF in seconds

Frequently asked questions

Password protection helps restrict access to your document. For highly sensitive files, confirm that the selected protection level meets your security requirements.