Protect PDF with Password
Add password (simulated re-save; true encryption needs server).
Add password to PDF instantly in browser. Free PDF protect — local only.
Calculator Inputs
About Protect PDF
Add password (simulated re-save; true encryption needs server).
Re-saves PDF; true encryption requires server-side qpdf. Note included.
Where it is used
Sharing drafts.
How to use the Protect PDF
- Select PDF — select a file (application/pdf,.pdf).
- New Password — enter the value (e.g. StrongPass123).
- Calculate — press the Calculate button to see the result instantly above.
Formula
pdf-lib re-save (simulated protect).
Examples
Example
password:1234
Result: Protected PDF
Frequently Asked Questions
- Encrypted?
- This demo re-saves; use Adobe/qpdf for real AES.