Entry Point directory image change

Hi,

I need to change the entry point directory image which is available in the below folder.

root > etc > public > mimes > images > entrypoints

This directory images are in img format which is not available even photoshop also does not support or convert img format.

I am able to upload gif,jpeg,bmp format image file but it does not work.

I would like to change the setting/config so that gif file works/support and reflect in the directory image.

Regards,

Sanjeev