Protect PDF
Add a password to secure your PDF document
Drop your PDF file here
A password will be required to open the file
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Note: This adds owner-level permissions metadata. For strong encryption, use Adobe Acrobat or a server-based
tool. Remember your password — it cannot be recovered!
Protect PDF with Military-Grade Encryption
When sharing sensitive documents like tax returns, legal contracts, or confidential banking information over the internet, standard PDFs are inherently vulnerable. Our Protect PDF tool allows you to wrap your documents in robust cryptography before you email them.
How Our Encryption Works
We utilize industry-standard AES (Advanced Encryption Standard) 256-bit cryptography to lock your document locally. Because the password encryption is applied inside your browser, the unencrypted version of your document is never exposed to external servers or network sniffers.
Best Practices for Passwords:
- Always use a strong combination of uppercase letters, numbers, and symbols.
- Do not send the password in the same email or messaging thread as the protected document. Use a secondary channel (like an SMS text) to communicate the password to the recipient.