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New Features

A powerful new security tool is now available!

calendar_today February 2026 Release
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PDF Password Protection - Now Available!

New Feature
February 2026

Secure your PDF documents with industry-standard AES-256 encryption. Add password protection to any PDF file to control who can open and view your documents.

  • AES-256 encryption — the same standard used by banks and governments
  • Set a password to restrict who can open your PDF
  • 100% private — we never store your passwords or encrypted files
  • Works with any PDF file, regardless of size or content
  • Fast processing entirely in the browser and on our secure servers
lock Protect Your PDF Now menu_book Read the Guide
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PDF Unlock Feature - Now Available!

New Feature
February 2026

Unlock password-protected PDF files instantly. Remove password protection and access restrictions from your PDF documents in seconds.

  • Remove password protection from PDF files
  • Fast and reliable unlocking process
  • 100% private — we never store your files or passwords
  • Works with any standard PDF protection format
  • Easy-to-use interface — no technical knowledge required
lock_open Unlock PDF Now menu_book Read the Guide

lightbulb Why This Feature?

Document security is more important than ever. Whether you're sharing confidential reports, legal documents, or personal files, password protection ensures only authorized recipients can access your content.

shield Strong Encryption

AES-256 is the gold standard in encryption. Your protected PDFs are secured with the same algorithm trusted by financial institutions and government agencies worldwide.

visibility_off Privacy First

We never store your passwords or keep copies of your encrypted files. Your documents are processed securely and deleted automatically after download.

Try All Our PDF Tools

ThinPDF now offers five powerful PDF tools to help you work with your documents more efficiently.

compress

Compress PDF

Reduce PDF file size without losing quality

 merge

Merge PDFs

Combine multiple PDFs into one document

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PDF to Word

Convert PDF to editable Word documents

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Protect PDF

Add password protection to your PDFs

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Unlock PDF

Remove password protection from PDFs
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