Password-Protect a PDF for Free, Right in Your Browser

You're emailing a contract, a payslip, or a scan of your passport. That attachment crosses a handful of servers, lands in someone else's inbox, and gets swept into backups. Unprotected, it's the digital equivalent of posting your house keys. Locking a PDF takes about ten seconds.

When a password is actually worth it

Rule of thumb: if you'd mind someone printing the file and leaving it on a desk, it needs a password. That means contracts, invoices with bank details, medical records, payslips, ID scans. A brochure that already lives on your website doesn't — you're just annoying the recipient.

How to do it with nothing installed

Open FileTools.eu, upload the PDF, set a password, download the encrypted copy. Processing happens locally in your browser, so the file never leaves your machine. Same flow on phone or desktop, no account, no Acrobat licence.

Send the password down a different channel

This is where most people undo their own work: they attach the locked PDF and type the password in the same email. That cancels the encryption entirely. Send it by SMS, Signal, or say it on a call. And don't reuse one password across every document you send.

Ten seconds of effort, an order of magnitude less risk. Alongside encryption, FileTools.eu also merges, compresses and unlocks PDFs — and if you record walkthroughs for your documents, TubeVoice dubs them into other languages.