All tools
Add Password
SecurityLive APILock a PDF with AES-256 encryption.
Drop a file here or choose
Options
Cost1 credits
Free to try Private & secure Deleted after 1 hour
Accepts
Returns
File
Batch
Single file
Cost
1 credits
About Add Password
Lock a PDF with AES-256 encryption. Use it free in your browser, or call the same thing from your code with one API request.
- Lock confidential files before sharing
- Strip personal data before publishing
- Meet privacy requirements
How it works
- 1
Upload your file
Drop in your PDF, or pick from your device.
- 2
Set your options
Tune a couple of settings to get exactly the result you want.
- 3
Download the result
Grab your file right away. Files are deleted automatically after an hour.
Prefer to automate? Call it by API.
curl -X POST https://api.doctransform.io/security/security/password/add \
-H "Authorization: Bearer dt_live_••••" \
-F "file=@document.pdf" \
-F "user_password=secret"Questions, answered
Yes — it's free to try in your browser. Programmatic use through the API costs 1 credits per run.
They're encrypted in transit, processed only for your request, and automatically deleted within an hour. We never use them to train models.
PDF.