With this add on you can now create thumbnail images based on settings via the database.
You can create as many groups you want.
Each group contains a:

- Title
- Code (to be used in your php code).
- Width
- Height

This add on includes 2 new classes:

- ext/gumlet/ImageResize.php
- includes/classes/Image.php

After uploading just install the Image Groups HeaderTags module.
Usage instructions are within the Image Groups HeaderTags module Description.

Contains also an extra file for the Bootstrapped 4 Admin repository.
The BS4 Admin can be found here: