Protect a PDF with a password
Encrypts a PDF with AES-256 (maximum security).
Protect a PDF with a password is now possible without any internet connection. Unlike online tools like iLovePDF or Smallpdf, SafePDF processes your file entirely on your computer. No upload, no intermediary server, no data collection.
This 100% local approach guarantees total confidentiality of your documents. Whether you're processing confidential contracts, medical records, bank statements or legal documents, your files never leave your machine. GDPR compliance by design.
SafePDF's protect pdf tool uses qpdf with AES-256 encryption (military standard) to deliver professional results with quality equal to or better than cloud solutions, all for free or at a much lower cost.
How it works
Select a PDF
Enter a password
Click "Run"
Why prefer local processing over an online tool?
Absolute privacy: your documents are never sent to a server. Zero risk of data leakage.
Automatic GDPR compliance: no data transfer means no complex registry obligations.
Offline operation: no internet connection needed. Ideal for travel or secure networks.
Speed: local processing is often faster than uploading + downloading from a remote server.
No file size limit: online tools often cap at 50-100 MB. SafePDF has no such limit.
No account required: no sign-up, no email, no trace.
SafePDF vs online tools
Most online PDF tools (iLovePDF, Smallpdf, PDF24, Soda PDF) work the same way: you upload your file to their servers, they process it, then you download it. This approach has three major problems: (1) your data transits through servers you don't control, (2) you don't know if the file is kept or deleted, (3) some companies have access to your document content. SafePDF eliminates these risks by processing everything locally. Your file never leaves your computer.
| SafePDF | Online tools | |
|---|---|---|
| Local processing | — | |
| Upload required | — | |
| Internet required | — | |
| GDPR by design | — | |
| Size limit | — | |
| Account required | — |
Why SafePDF?
100% local
Your files are never uploaded. Everything happens on your machine.
Free forever
The merge tool is free. No credit card, no sign-up.
Secure
AES-256 encryption, Ed25519 signature, auditable code.
Frequently asked questions
Security level?
AES-256, recommended by GDPR.
Lost password?
The PDF is unrecoverable.
Protect PDF locally with SafePDF guarantees fast, free (for merge) or affordable (€12/month for 26 Pro tools) processing, and above all 100% confidential. Download SafePDF for free now and try it yourself. Installation takes less than a minute, no account required.