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Unlock PDF
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2 files, max 5M each
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About This Tool
Unlock PDF is a free-to-use online PDF decryption tool that requires no installation and no registration — just open and use. It removes the open password from a PDF, restoring the encrypted file to a freely openable PDF, with support for batch processing of multiple files. All processing happens locally in your browser, so your password and files are 100% private and never uploaded to any server. Whether you are reading encrypted documents freely, organizing files in batches, or preparing for further editing, this tool has you covered — upload and decrypt with results rivaling professional PDF editors. (Note: "free" refers to daily free quota, not unlimited; for high-volume or professional needs, consider the membership plan for more quota.)
How to Use
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Upload PDFs
Click the upload area or drag and drop one or more PDF files into the box, with batch upload supported
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Enter the password
Enter the PDF's open password on the right panel; make sure it is correct
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Start processing
Click the "Start Process" button and download the password-free PDFs once decryption finishes
Use Cases
- Free reading: open documents without entering a password every time
- Batch processing: remove passwords from many files at once to save time
- Further editing: decrypted PDFs can be processed by other tools on this site (merge, compress, etc.)
Key Advantages
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Batch decryption
Multiple files can be batch-uploaded to remove passwords at once, greatly boosting efficiency
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Privacy & security
All processing is done locally in your browser; your password and files are never uploaded, keeping your data 100% private
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Flexible downloads
Decrypted results can be downloaded individually or packed into a ZIP to fit different needs
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Open and go
No installation, no registration — open and use, backed by a daily free quota for everyday needs
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Ready for editing
Decrypted PDFs can be further processed by our merge, split and compress tools for a smoother workflow
About Decryption
Decryption requires you to provide the correct open password; the tool only removes the "open password" and never stores or uploads it. The decrypted file is no longer password-protected, so keep it safe.
| Item | Description | Notes |
|---|---|---|
| Password required | You must enter the correct open password | Unknown passwords cannot be cracked |
| Batch processing | Multiple files use the same password | Download individually or as a package |
| Security | Local processing; password never uploaded | File is unprotected after decryption; keep it safe |
FAQ
The PDF unlock tool is a free online tool that removes the open password from a PDF. It restores an encrypted PDF to a normal PDF that opens without a password, and supports batch processing.
Yes. You must know and enter the correct open password for the tool to remove the protection; unknown passwords cannot be cracked.
Yes. Multiple files can be uploaded in batch and all use the same password; download them individually or as a package.
No. The tool generates a brand-new unencrypted PDF; your original upload stays untouched.
Files are processed entirely in your local browser and the password is never uploaded to any server — feel free to use it.
By design, the tool cannot crack an unknown password. Please recover the password before decrypting.
The tool removes the PDF open password (the password required to open the document). Enter the correct password to decrypt successfully.
No registration is required. Just open the page to start. We provide free daily usage for everyday light needs; for higher processing volume, upgrading to a membership unlocks more quota.
The tool supports batch decryption of multiple files, limited mainly by your device memory. A single file under 100MB is recommended for stable, fast processing.
This tool provides free usage every day. Light everyday needs can be met at no cost; when you need higher volume or more frequent use, a membership unlocks more quota for your scenarios.
Yes. Once decrypted, the PDF is no longer password-protected and can be processed by our merge, split and compress tools, or edited normally with other software.
Yes. The tool works on phones, tablets and computers — as long as you have a browser, you can decrypt your PDF documents anytime, anywhere.
Content last updated：2026-07-10
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