Unlocker - Free Online PDF Tool

Decrypt password-protected PDF files directly in your browser. Upload one or multiple locked PDFs, enter the correct password, and instantly unlock them with no server uploads. Supports batch processing and ZIP download. All operations run client-side for complete privacy.

How to Use

1. Click the upload area or drag and drop your password-protected PDF file(s) into the designated zone.
2. Enter the correct PDF password into the password input field if the file is protected.
3. Click the green Unlock PDF button to begin decrypting your file(s) in the browser.
4. Download each unlocked PDF individually from the results table, or click Download All ZIP for batch retrieval.

Key Features

• Decrypt password-protected PDFs
• Batch unlock multiple files
• Client-side processing only
• Download as individual or ZIP
• Progress bar with status table
• Supports multiple encryption methods

Frequently Asked Questions

Can this tool unlock PDFs without the password?

No. This tool requires the correct password to decrypt password-protected PDFs. It cannot recover or brute-force forgotten passwords. Make sure you have the right password before using the tool.

Are my PDF files uploaded to a server?

No. All processing happens entirely in your browser using client-side JavaScript. Your files never leave your device, ensuring complete privacy and security during the unlock process.

Can I unlock multiple PDFs at once?

Yes. You can upload multiple PDF files simultaneously by selecting them all at once or dragging them together. After unlocking, you can download each file individually or grab them all as a single ZIP archive.

What types of PDF encryption are supported?

The tool supports common PDF encryption methods including standard user-password and owner-password protection, as handled by the pdf-lib library running in your browser.

Launch Unlocker

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Maintained by Huang Bin · Last updated October 3, 2026