Protect GIFs from unauthorized use on the Web.

To add hidden signatures to GIF- files select menu item Tools / Signature.
Button Sign chooses existing GIF- file and saves it together with hidden signature which was inputed into a field above this button.
Button Check checks presence of your signature in existing GIF- file.


  • maximal text length of your signature is limited and depends on GIF coloring and size;
  • using of hidden signature slightly increases size of created GIF- file.