Encrypt PDF

Set an open password on PDF locally with RC4 128-bit encryption.

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Select or drop PDFAdd an open password to an unencrypted PDF

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Convert, compress, merge, split, extract, and organize PDFs with practical browser tools and task guides.

How to use & FAQ

Protect contracts and scans before sharing. Encryption runs in-browser with pdf-lib; files are not uploaded.

You must remember the password—there is no recovery. Encrypted PDFs open in standard readers with your password.

Is PDF uploaded?▾

No. Encryption is fully local.

Encryption type?▾

RC4 128-bit open password, widely supported.

Forgot password?▾

Cannot recover here. Keep a backup or store password safely.

Edit after encrypt?▾

Decrypt first with known password using our decrypt tool.

Restrict print/copy?▾

This tool sets open password only.

Mobile?▾

Yes; large files may need Wi-Fi.