Yes — Protect PDF is completely free, with no signup, no watermark, and no usage limit.
Is my file private?
Protect PDF runs entirely in your browser using JavaScript/WebAssembly. Your file is never uploaded — it's processed on your own device and never touches our servers.
Do I need to create an account?
No. There's no signup, login, or email required for any tool on this site.
Can I use this on my phone?
Yes, every tool works on mobile browsers as well as desktop.