Private · in-browser · no upload

Attach files

Attach files inside a PDF (pdf-lib embedded files).

Drop a PDF

or tap to browse

Processed in your browser — files never uploaded

Try related tools

Protect PDF

Encrypt your PDF with a password (user permissions).

Unlock PDF

Decrypt a password-protected PDF when you know the password.

Flatten PDF

Flatten form fields and annotations into page content.

Best effort

Restrict permissions

Best-effort owner-password encrypt (pdf-lib limits apply).