Use Case
Protect a PDF With a Password
Add password protection to confidential PDFs. Encryption happens locally in your browser.
Protect PDFHow to Use This Tool
- 1Upload the PDF you want to protect.
- 2Enter a strong open password.
- 3Download the encrypted PDF.
Why use sotool?
Stop Casual Access
An open password prevents anyone without the password from viewing the file.
Local Encryption
The PDF is encrypted in your browser, so the password never reaches a server.
No Signup Needed
Start using the tool immediately without creating an account or logging in.
Browser-Based
Works on Windows, Mac, Linux, Android, and iOS as long as you have a modern browser.
Frequently Asked Questions
Use at least 8 characters with a mix of letters, numbers, and symbols. Avoid common words.
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