PDF schützen & entsperren
Sichere deine PDF-Dateien mit Passwortschutz und Verschlüsselung oder entferne Passwörter aus geschützten Dokumenten.
About Protect PDF
Confileo's Protect PDF tool locks a PDF with a password so only the right people can open it. Everything runs in your browser, free and without signup, and your files are deleted automatically after processing.
Quick facts
- Price
- Free — no paywall
- Signup
- Not required
- Max file size
- Up to 100 MB per file
- Your files
- Deleted automatically after processing
- Works on
- Any browser — desktop, tablet, mobile
- Watermark
- None on your output
How to use Protect PDF
- 1Upload the PDF you want to secure.
- 2Set a strong password.
- 3Download the encrypted, password-protected PDF.
Why use Confileo
- ✓100% free with no daily limits, watermarks or hidden paywalls.
- ✓No signup or account required — start using it instantly.
- ✓Your files are processed securely and deleted automatically for full privacy.
- ✓Works in any browser on desktop, tablet and mobile — nothing to install.
- ✓Fast processing built to handle real, everyday document workloads.
Protect PDF — Frequently asked questions
Where is my password stored?
It is never stored. Encryption happens in your session and the file is deleted afterward.
Can I remove the password later?
Yes. Anyone with the password can open and re-save the file without protection.
How do I put a password on a PDF?
Upload the file, type a strong password, and download an encrypted copy that will not open without it.
Can I protect a PDF before emailing it?
Yes. Ideal for contracts, financial and medical documents — share the password through a separate channel from the file.
What happens if I forget the password?
We never keep the password, so it cannot be recovered. Save it somewhere safe before sharing the file.
Does the password stop printing or copying?
The protection stops the file from opening without the password; once open, anyone with it can read and use it.
Is this tool really free?
Yes. Every Confileo tool is free to use with no daily caps, no watermark on your output and no credit card required.
Do I need to create an account?
No. You can use the tool straight away without signing up or logging in.
Are my files safe and private?
Yes. Your files are processed for the task you requested and then deleted automatically — they are never shared or kept.
Does it work on my phone?
Yes. The tool runs in any modern browser, so it works the same on desktop, tablet and mobile with nothing to install.