PDF Unlock
Remove password protection and restrictions from your PDF. Works entirely in your browser.
PDF Unlock Documentation
Remove password protection and permission restrictions from any PDF document directly in your browser. Powered by QPDF WebAssembly — no files are uploaded to a server.
How it works
- Upload or drag & drop your protected PDF file.
- If the PDF requires a password to open, enter it in the password field.
- Click the Unlock & Download button to decrypt the PDF.
- Download the fully unlocked PDF with all restrictions removed.
What protections can be removed
Remove the password required to open the PDF. You must provide the correct password.
Remove restrictions on printing, copying, editing, and commenting — without needing the owner password.
Unlock PDFs that prevent printing after decryption.
Unlock PDFs that prevent copying text or images after decryption.
Technology
This tool uses QPDF WebAssembly — the industry-standard QPDF library compiled to WebAssembly for browser execution. It performs real PDF decryption by removing encryption dictionaries, decrypting content streams, and stripping permission restrictions — all locally in your browser.
Privacy & security
All PDF decryption is performed locally in your browser. Your files and passwords are never uploaded, stored, or sent to any server. The decryption happens entirely on your device using QPDF WebAssembly — even this website cannot access your files.
Limitations
- You must provide the correct open password if the PDF requires one to open.
- Owner password restrictions can be removed without the owner password.
- Very large encrypted PDFs may take a few extra seconds to decrypt.
- Some advanced DRM or certificate-based protections may not be removable.
Common use cases
- Unlock PDFs that cannot be printed for important documents.
- Remove editing restrictions to modify content in a PDF.
- Enable copying text from restricted PDFs for research or note-taking.
- Unlock PDFs received from colleagues or institutions with permission locks.
- Decrypt PDFs you created but forgot the password for (open password still needed).
Frequently Asked Questions
Quick answers about decryption, password removal, and how the PDF unlock tool works.
Can this tool open password-protected PDFs?
Yes. This tool uses QPDF WebAssembly to perform real decryption. If the PDF requires a password to open, enter it in the password field. The tool will decrypt the PDF and remove all protection.
Do I need the owner password to remove printing/copying restrictions?
No. Owner password restrictions (printing, copying, editing) can be removed without knowing the owner password. Only the open password is required if the PDF demands one to open.
Is my PDF uploaded to a server?
No. All decryption happens locally in your browser using QPDF WebAssembly. Your files and passwords never leave your device.
What types of protections can be removed?
This tool can remove: open passwords (if you provide the correct password), owner password restrictions (printing, copying, editing, commenting), and all encryption dictionaries from the PDF.
What encryption types does it support?
QPDF supports all standard PDF encryption types including RC4 (40-bit and 128-bit), AES (128-bit and 256-bit), and both V2 and V5 encryption handlers.
Will the unlocked PDF retain its original quality?
Yes. The decryption process only removes encryption and restrictions — it does not modify, compress, or alter the content, formatting, or quality of the PDF.
Is it legal to unlock PDFs?
Unlocking PDFs you own or have authorization to modify is legal. Always respect copyright and intellectual property laws. This tool is intended for legitimate use.
Is there a file size limit?
There is no fixed upload limit. QPDF WebAssembly processes files efficiently in the browser. Very large encrypted PDFs may take a few extra seconds to decrypt.