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Current toolEncrypt PDF
PDF · PDF-12Submit an issue

Encrypt PDF

Protect a PDF with AES-256.

AES-256 · Opening password

Drop files here

Supports PDF；1 file；50 MB each

Set or remove the PDF opening password, then reopen the exported file to check the result. Keep the password safe; this site cannot recover it. Rewriting a PDF may invalidate existing digital signatures.

Usage guide and examples

Protect a PDF with a password

Choose an unencrypted PDF and set an opening password. Keep it safe; this site cannot recover it. Rewriting may invalidate existing signatures.

Check the input format and options with this example before using your own data. Random values, file sizes and presentation vary with the input and settings.

Example input and settings

input.pdf
demo-password

What to check in the result

PDF · AES-256
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