Is Protect PDF free to use?

Yes. Every avalpdf tool, including Protect PDF, is free with no sign-up and no daily limit.

Are my files uploaded to a server?

No. The work happens inside your browser tab, so the file itself never leaves your device.

Does Protect PDF work on a phone?

Yes — it works in mobile browsers on Android and iPhone as well as on desktop.

Protect PDF

Lock a file with a password before you send it on.

Drop your PDF here

Or click to browse. Your file is read on this device only.

Processed entirely in this browser tab. Nothing is uploaded anywhere.

Do more with your file

Unlock PDF

Remove a password you know, so the file opens freely.

Redact PDF

Black out private details for good — the text underneath is gone.

Sign PDF

Draw or type a signature and place it anywhere on the page.

About Protect PDF

Protect PDF encrypts a document with a password, so only people who know it can open the file. It is a simple safeguard before emailing payslips, IDs or medical records.

When people use it

Emailing salary slips or tax documents.
Sharing scanned ID with a bank or employer.
Storing sensitive records on a shared drive.

Tips for better results

Send the password through a different channel than the file, such as a text message.
There is no way to recover a forgotten password — store it safely.
Use a long passphrase rather than a short word.

How to use Protect PDF

1Open the Protect PDF page on avalpdf.
2Drop your file in, or click to browse for it.
3Choose your options — the defaults suit most files.
4Run the tool and download the finished file.

Questions about Protect PDF

Is Protect PDF free to use?: Yes. Every avalpdf tool, including Protect PDF, is free with no sign-up and no daily limit.
Are my files uploaded to a server?: No. The work happens inside your browser tab, so the file itself never leaves your device.
Does Protect PDF work on a phone?: Yes — it works in mobile browsers on Android and iPhone as well as on desktop.