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Unlock a Password-Protected PDF

Already locked a file with our Lock PDF tool and now need the password off, maybe before compressing it or sending it somewhere the recipient already has access another way? This reverses it using your original passphrase.

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What this can and can't undo

This specifically reverses files that were locked using SantaPDFTools' own Lock PDF tool. A PDF password-protected in Adobe Acrobat or another app uses a different internal encryption format, so it won't work here.

A typical scenario

You locked a payslip PDF before emailing it, and now need to merge it with three other months' slips into one combined file. Unlock it first, since Merge PDF (and most other tools) can't read an encrypted file directly.

Frequently Asked Questions

Can this unlock a PDF I protected with Adobe Acrobat?

No, this only reverses files locked with our own Lock PDF tool. Other software uses different encryption formats.

Is the password checked against a server anywhere?

No, decryption happens fully offline, right in your browser.

Will unlocking change the file content at all?

No, the original content comes back exactly as it was before locking. Nothing about pages, formatting, or metadata changes.

I forgot the password. Can support recover it?

Unfortunately not. Because the encryption is real, there's genuinely no way for anyone to recover a lost password.

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