Security
Password Protect a PDF Free
Encrypt any PDF with a strong password.
Runs in your browserNo sign-upFree
Drop your file here
or click to browse — any size, as many as you need
Accepts .pdf
How it works
- 1
Drop your file
Upload the file to protect.
- 2
Configure options
Choose a strong password and confirm.
- 3
Download the result
Download the secured PDF.
How Password Protect PDF compares
| Feature | FastPDFconverter | iLovePDF | Smallpdf | Adobe |
|---|---|---|---|---|
| Price | 🆓 Free | 💰 Freemium | 💰 Freemium | 💰 Paid |
| No watermark | ✅ Always | ❌ Paid only | ❌ Paid only | ❌ Paid only |
| No daily limit | ✅ Always | ❌ 2/hour | ❌ 2/day | ❌ Paid only |
| No account required | ✅ Always | ⚠️ Optional | ❌ Required | ❌ Required |
| Files stay in browser | ✅ Always | ❌ Uploaded | ❌ Uploaded | ❌ Uploaded |
| Batch processing | ✅ Free | ❌ Paid only | ❌ Paid only | ❌ Paid only |
| How they make money | 📢 Ads | 🔒 Paywalls | 🔒 Paywalls | 🔒 Paywalls |