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Add a password to secure your PDF, or remove a password you already know. Fast, free and secure.
Add a password to keep your PDF private, or remove a password from a file you already have access to. Everything runs in your browser — your document is never uploaded to a server.
Protect or unlock your PDF in 3 simple steps
Click "Select File" or drag & drop your PDF onto the upload area.
Pick "Protect" to add a password, or "Unlock" to remove one you know.
Type the password once (Protect) or the existing one (Unlock).
Click the action button and your file downloads instantly.
Real security, zero server uploads
Your PDF and password are processed entirely in your browser — never sent to any server.
Protect mode applies genuine PDF password encryption, not just a visual lock.
Remove a password from a PDF when you already know what it is.
Most PDFs process in just a few seconds, right in your browser.
Works perfectly on Android & iPhone — no app required.
No hidden fees, no watermarks, no file limits.
Choose a password you'll remember — we don't store it anywhere, so there's no way to recover it if lost.
Unlocking rebuilds your PDF from page images, so text won't be selectable or searchable afterward — visual quality stays high.
This tool can only remove a password you already know — it cannot crack or bypass unknown passwords.
For sensitive documents, use a strong password with a mix of letters, numbers, and symbols.
Yes! Mishu PDF's password tool is 100% free — no hidden charges, no subscription, no watermarks.
No. This tool can only remove a password from a PDF if you already know it. It cannot crack, guess, or bypass unknown passwords.
Visual quality stays high, but since pages are rebuilt as images to remove the password, text will no longer be selectable or searchable in the unlocked file.
Absolutely. Everything — your PDF and your password — is processed entirely in your browser. Nothing is ever uploaded or sent to any server.