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Unlock PDF

Decrypt a password-protected PDF so you can open, edit, or share it freely. You must know the password. All decryption happens in your browser. Free, private.

Unlock PDF — remove password protection from your PDF online

Need to remove a password from a PDF you own? This tool decrypts password-protected PDFs so you can open, edit, merge, or share them without entering a password every time. You must know the password — this is a legitimate decryption tool for documents you have authorized access to. All processing happens in your browser.

How it works

  1. Upload your password-protected PDF.
  2. Enter the password.
  3. Click Unlock PDF.
  4. If the password is correct, download the unlocked PDF without any password protection.

Important: you must know the password

This tool requires the correct password to decrypt the PDF. It does not attempt to crack, guess, or bypass passwords. If you do not know the password, this tool cannot help you. This is by design — we respect document security.

Privacy

All decryption happens in your browser. Your PDF and password are never uploaded to any server. Safe for confidential and sensitive documents.

Legitimate decryption — you must know the password

This tool decrypts PDFs whose password you already know. Forgot a password? Lost the document owner? This tool cannot help — it does not brute-force, dictionary-attack, or bypass the password layer. That is intentional: we will not provide a tool that can be used to read documents you do not have authorization for.

Common legitimate scenarios

  • Payslips and tax forms — your employer sent the PDF protected by your date of birth or employee ID. Unlock once, store the unprotected copy in your records system.
  • Bank statements — most banks send statements protected by your account number or last four SSN digits. Unlock for personal accounting use.
  • Old archived documents — you used to protect your own files years ago and now need to merge them with current records.
  • Inherited corporate documents — outgoing employee left files with a known shared password; IT unlocks them as part of handover.

Why local decryption matters

Most online "unlock PDF" services upload your file (and the password) to their server. That means your password is now known to a third party, and your document — often a payslip or tax form with private numbers — is on their disk. This tool runs entirely in your browser. The password is typed in, used locally by pdf-lib to decrypt, and discarded. Nothing leaves your device.

Pro tips

  • If you need to send the unlocked PDF onward, consider re-applying a new password with Protect PDF using a recipient-specific password.
  • If you have many same-password PDFs to unlock, batch them by opening multiple tabs — each runs independently in its own browser memory.
  • If decryption fails, double-check for trailing whitespace in copy-pasted passwords and uppercase/lowercase mismatch.

Unlock first: decryption as the gateway to every other workflow

Unlocking is almost always the first step — you cannot merge, split, rotate, number, watermark, compress, or edit metadata on a password-protected PDF without decrypting it first. Unlock the file in your browser, then apply whatever PDF operations you need, and optionally re-protect with a new password before handing off to the next recipient. Your password is never sent to a server — pdf-lib uses it locally to decrypt, then discards it immediately.

  • Protect PDF — Re-encrypt after processing — unlock, edit, and re-protect with a new or recipient-specific password before handing the document off.
  • PDF Merger — Merge unlocked PDFs from multiple sources into a single combined document.
  • PDF Splitter — Split an unlocked document into sections and re-protect each section independently for different recipients.
  • PDF Compressor — Compress an unlocked file before re-sharing — encryption blocks compression until you decrypt first.
  • Rotate PDF — Fix orientation of scanned PDFs after decrypting — password-protected scans often arrive with incorrect orientation from the sending application.
  • Add Page Numbers — Add or re-sequence page numbers after unlocking a merged document that was locked before numbering.
  • PDF Metadata Editor — Clean metadata on an unlocked document before redistribution — author and software fingerprints are common in protected corporate PDFs.
  • Add Watermark — Stamp the unlocked document before re-protecting to lock in the mark for the next recipient.

Full guide: unlock a PDF safely

Need the complete decision tree for open passwords, permission restrictions, privacy, and recovery options? Read How to unlock a PDF when you forgot the password.

Related tools

After unlocking, people often use PDF Merger, PDF Splitter, Rotate PDF, and PDF Compressor.

Frequently Asked Questions

Is this tool free to use?

Yes. The tool is free to use in your browser and does not require an account.

Do I need to install anything?

No. The workflow runs in a normal modern browser, so you can use it on desktop or mobile without installing extra software.

Is my PDF uploaded to a server?

No. All PDF processing happens locally in your browser. Your documents never leave your device.

What PDF operations are supported?

You can merge, split, compress, rotate, protect, unlock, add watermarks, add page numbers, and convert PDFs to other formats.

Is there a file size limit?

There is no hard limit, but very large PDFs may be slower due to browser memory constraints. Files up to 50MB typically process quickly.

Will the PDF layout be preserved?

Yes. The tool preserves the original layout, fonts, and formatting of your PDF pages.

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