For Prestashop Version 1.3.7 Changes to homecategories to show categories as table
On the homecategories.tpl about line 12:

change homecategories.tpl image link from:

change homecategories.tpl image link to:

This changes the call to the category image (that live here: img/c) from the large about 500 px across to the medium about 125 px image. All that is changed is the last parameter from 'category' to 'medium' that's it.

Change the CSS (themes/prestashop/css/global.css)
I'm no css expert, so could probably be improved.
Add to the end of global.css

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