Password-protect a PDF
Encrypt a PDF with a password before sending it anywhere sensitive — payslips, contracts, medical records. The file is protected with AES-256, the strong standard PDF encryption that every modern reader (Adobe, browsers, phones) can open with the right password.
This tool is deliberately stateless: your file and password travel in one request, the encrypted result streams straight back, and nothing is stored — no upload record, no queue job, no logged password. That isn't a promise bolted on afterwards; it's how the endpoint is built.
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Choose the PDF and type a password (up to 127 characters).
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Encryption runs in a single request — nothing is persisted anywhere.
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The protected PDF downloads immediately. Share it; send the password separately.
Need to remove a password you know? The companion Unlock tool in the full app reverses this with the same stateless, nothing-stored design — a wrong password is told apart from a file that was never encrypted, so you always know what actually happened.
Remember: PDF encryption protects the file in transit and at rest, but anyone you give the password to can make an unprotected copy. Choose who gets it.
Protect PDF — questions
Is my password stored anywhere?
No. It exists only inside the single encrypt request and is never written to disk, database or logs — the endpoint is built stateless specifically for this.
What encryption is used?
AES-256 (PDF R6), the current standard — supported by all modern PDF readers.
What if I forget the password?
There is no backdoor — that's the point of encryption. Keep the password safe; we cannot recover it and neither can anyone else.