Free tool
Protect PDF
Add a password so only people you trust can open the PDF.
Add your file
Get your result
About this free tool
Protect PDF — free online tool
Add a password to a PDF before you email or share it, so only people with the password can open it.
Encryption happens in your browser — the file and the password are never sent anywhere.
Great for
- Sharing ID documents
- Salary slips
- Contracts
- Medical reports
Highlights
- Standard PDF encryption that every reader supports
- Printing and copying still allowed for you
- Free, no account
How to use Protect PDF
- 1Add your PDF.
- 2Choose your settings (new password).
- 3Press “Run Protect PDF”, check the preview and download the result.
Questions about Protect PDF
Is Protect PDF free to use?
Yes. Protect PDF on Capyboat is completely free, with no sign-up, no watermark and no daily limit.
Are my files safe?
Yes. Protect PDF runs entirely inside your browser, so your files are never uploaded to any server.
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