Do I need to know the current password?

Yes — this tool removes a password you already know and can supply; it is not a password-cracking or recovery tool.

Is it legal to remove a PDF's password?

Only remove protection from PDFs you own or otherwise have explicit permission to unlock. You're responsible for complying with applicable laws and any agreements covering the document.

Why can't this run entirely in my browser?

pdf-lib, which powers this site's other PDF tools, doesn't implement PDF decryption; that requires a dedicated server-side PDF security library.

What happens if I click Unlock PDF right now?

If no backend is configured, the page tells you clearly that a backend isn't connected rather than pretending to unlock your file.

Home Tools Unlock PDF

Unlock PDF

Remove a password from a PDF you own the rights to.

Requires a connected backend. Unlock PDF needs server-side processing that can't run in a browser alone. The upload flow, progress states and error handling below are fully built and ready to call our documented API — see BACKEND-API-CONTRACT.md.

Drag & drop your protected PDF here

.pdf · Up to 50 MB · Processed in your browser

Current PDF password

About Unlock PDF

Unlock PDF removes a password from an encrypted PDF, given the correct existing password, so it can be opened without one going forward. Real PDF decryption — validating the owner/user password and rewriting the file without encryption — needs a dedicated PDF security library running server-side; pdf-lib, which powers this site's client-side tools, does not implement decryption.

This page is a complete, production-ready frontend — including the password field, upload flow and progress/error states — that calls a documented backend API (see BACKEND-API-CONTRACT.md) to perform that decryption. Only use this on PDFs you own or otherwise have the legal right to unlock.

Key features

Real decryption

Uses a proper PDF security library, not a workaround.

Backend-powered

Password validation and decryption happen server-side.

Documented API

Every request/response is specified in BACKEND-API-CONTRACT.md.

Step-by-step guide

1
Drag your protected PDF into the box above, or click Choose PDF.
2
Enter the PDF's current password.
3
Click Unlock PDF.
4
Once a backend is connected, download the unlocked file.

Benefits

Uses genuine PDF decryption, not a client-side approximation

Built on a documented, versioned REST API contract

Frontend is complete today — only a backend connection is needed

No fake or placeholder conversions — honest status reporting

Frequently asked questions

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