I need to make 5 images impossible to reverse-search by altering Hex code

General information for the business: N/A Description of every module: Using Google or Tineye, it's possible to reverse-search an image. I know that by altering something in the image (noise?), you can make it completely unsearchable without changing the appearance of the image itself. So the task is: 1. Make the images unsearchable. 2. Do not change the appearance of the images. THIS MUST BE DONE WITHOUT ALTERING THE IMAGE, JUST BY USING A HEX EDITOR. Description of requirements/functionality: THIS MUST BE DONE WITHOUT ALTERING THE IMAGE, JUST BY USING A HEX EDITOR. Extra notes: