Rename packed files in Blender

I need renaming packed image files in Blender. When unpack out those files, they will be saved with the new names. If one image file is used once in a Blender file, save them with textures name maybe aoso better, else save them with shader name object name clection name scene name or Blender file name. It is also acceptable to save multiple copies only with their own texture name. When I use downloaded image files（also sound files）, I don’t have to worry about messy naming rules and paths any more. Because I can modify them more conveniently in the future，and save them to the location of my own project.