Protect PDF
Drop a file
Drag your PDF here
or click to browse
Encrypt a PDF so it can only be opened with the password you choose. AES-256 encryption via qpdf on isolated Lambda.
How it works
How to protect pdf
- 1
Add Your PDF
Drag the PDF you want to protect, or click to browse.
- 2
Set A Password
Pick a strong password. Confirm it to avoid typos.
- 3
Click Protect
We encrypt the PDF in your browser.
- 4
Download The Result
Save the password-protected PDF.
Your files are safe
Privacy and security, by default
256-bit TLS
Every upload travels over modern TLS. Files at rest are encrypted with AES-256.
Deleted in 24h
Uploaded files and outputs auto-delete from S3 within a day of your job.
Browser-first
Most tools run on your device. Cloud tools are clearly labelled, never silent.
No watermarks
Outputs are pristine PDFs. Free tier, no signup, no branding on your files.
FAQ
Frequently asked
Soon. The qpdf Lambda layer is ready - we're staging the deploy.
Related tools