Unlock PDF Online – Remove a Known PDF Password

Enter the password that already opens your authorized PDF, then download a password-free copy. The file is decrypted locally in your browser without rasterizing its pages.

PDF stays on your device
Password is not stored
Content-preserving decryption
No watermark

1. Choose a protected PDF

Choose a PDF or drag and drop it here One PDF, up to 200 MB

2. Enter the known password

PDF password

The password is cleared from the form when an attempt starts. This tool does not guess unknown passwords.

I am authorized to remove this PDF’s password.
Only unlock documents you own or have permission to modify.

3. Download the unlocked copy

Your password-free PDF will appear here after successful decryption.

How to unlock a PDF with its password

1. ChooseSelect one password-protected PDF from your device.

2. EnterType the password that currently opens the PDF and confirm authorization.

3. UnlockA temporary Web Worker removes standard PDF encryption locally.

4. VerifyDownload the copy, open it without a password, and inspect important features.

What removing a PDF password changes

This tool uses QPDF, a content-preserving PDF transformer compiled to WebAssembly. It writes a new PDF without standard encryption. Unlike a print-to-PDF workaround, it does not intentionally convert every page into an image, so selectable text, vector artwork, and embedded images normally retain their original form and quality.

Supported use

Standard password-encrypted PDFs that open with the password you provide, including common AES and older RC4 encryption handled by this QPDF build.

Not password recovery

The tool cannot discover, crack, or bypass an unknown password. It also cannot unlock certificate security, enterprise DRM, or remote account-based access controls.

Browser memory limits

The 200 MB input limit protects browser stability. Decryption needs additional memory, so a large file may still fail on a phone or low-memory device.

Keep the original

Encryption removal rewrites the file. Verify signatures, forms, attachments, bookmarks, links, layers, accessibility structure, and viewer-specific behavior before replacing the protected original.

Important: removing encryption may invalidate certificate-based digital signatures or conflict with document-handling rules. Authorization to open a document is not always authorization to redistribute an unprotected copy. Follow the owner’s requirements and applicable policy.

Technical implementation review: 28 July 2026. The tool calls QPDF with its documented decrypt operation and a user-supplied password. QPDF’s manual explains that decrypt output is written without encryption. See the QPDF command-line documentation.

Frequently asked questions

Is my PDF or password uploaded?

No. The selected PDF and password are passed to a QPDF WebAssembly worker in your browser and are not transmitted by the tool. The page still loads normal website resources, analytics, advertising, and the QPDF program file, subject to consent choices.

Can this tool find or crack an unknown PDF password?

No. It does not guess, recover, or bypass an unknown password. You must supply the correct password for a PDF you are authorized to unlock.

Will the unlocked PDF lose quality?

The tool removes PDF encryption without intentionally rasterizing or recompressing pages, so text, vector artwork, and images normally retain their original quality.

Why does the correct password sometimes fail?

The PDF may use certificate security, enterprise DRM, a damaged file structure, or an encryption feature unsupported by this browser build. Confirm that the same password opens the file in a normal PDF reader.

Does removing the password preserve digital signatures?

Do not assume it does. Rewriting a signed PDF can invalidate or alter signature validation. Keep the original and verify signatures in a trusted PDF reader.

Can I unlock a PDF that only restricts printing or editing?

QPDF can remove standard PDF encryption restrictions when the supplied password opens the file and you have permission to change it. This tool is not intended to defeat access controls or rights-management systems.

What is the file-size limit?

The tool accepts one PDF up to 200 MB. The practical limit may be lower on phones and devices with limited memory because processing requires additional browser memory.

Should I delete the protected original?

Not immediately. Open and inspect the unlocked copy first, and keep the protected original until you have verified pages, forms, attachments, links, bookmarks, accessibility features, and signatures that matter to you.