PDF Unlock
Remove password protection from PDF files instantly in your browser. Includes smart brute-force password recovery.
How does the PDF unlock tool work?
This tool uses MuPDF library to load your password-protected PDF with the password you provide, then saves a new copy without encryption. All processing happens locally in your browser using WebAssembly.
Is my PDF file secure when using this tool?
Yes, absolutely. All processing is done locally in your browser. Your PDF file and password never leave your device. No data is sent to any server, ensuring 100% privacy.
What types of PDF password protection can be removed?
This tool can remove user password (document open password) from PDF files. You need to provide the correct password to unlock. It cannot remove owner password restrictions without the password.
Will the unlocked PDF maintain the same quality?
Yes, the unlocked PDF is an exact copy of the original with all pages, text, images, formatting, and quality preserved. Only the password protection is removed.
Do I need to know the password to unlock a PDF?
Yes, for direct unlocking you need the correct password. However, if you've forgotten the password, you can use the built-in brute-force recovery feature to attempt automatic password discovery.
How does the brute-force password recovery work?
The brute-force recovery tries thousands of common passwords and patterns automatically. It offers 4 levels: Quick (4-digit PINs), Standard (common passwords + numbers), Deep (dictionary + dates), and Extreme (full character set with mutations).
Is this tool completely free to use?
Yes, this PDF unlock tool is 100% free with no limitations. No registration required, no watermarks added, no file size limits, and no daily usage caps.
Can I use this tool on my phone or tablet?
Yes, this tool works on any device with a modern web browser, including smartphones, tablets, laptops, and desktop computers. It supports Chrome, Firefox, Safari, Edge, and more.
What is the maximum PDF file size supported?
Since all processing happens in your browser, the limit depends on your device's available memory. Most devices can handle PDF files up to several hundred megabytes without issues.
Does this tool work offline?
After the initial page load, the core unlocking functionality works offline. However, the first visit requires an internet connection to load the necessary WebAssembly modules.
Can I remove PDF encryption without the password?
Without knowing the password, you can try the brute-force recovery feature. It works well for simple or common passwords. For complex passwords with many characters, recovery may take very long or be impractical.
Why choose this PDF unlock tool over others?
This tool processes everything locally in your browser for maximum privacy, requires no software installation, supports brute-force password recovery, works on all platforms, and is completely free with no limitations.
How to Use PDF Unlock
Remove password protection from PDF files directly in your browser. The file never leaves your device, and smart brute-force search can help recover forgotten passwords.
- Drop your protected PDF into the tool — it is opened and processed locally, never uploaded.
- If you know the password, enter it in the "PDF Password" field and unlock the document in one step.
- If you forgot it, choose a level under "Recovery Level:" — start with Quick for 4-digit PINs before trying Deep or Extreme.
- Let the recovery run; higher levels try far more character combinations and therefore take longer.
- Once unlocked, download the password-free PDF from the result.
Only unlock PDFs you own or have permission to open — and try Quick first, since many phone-scanned PDFs use 4-digit PINs.
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