The pngquant tool was used https://pngquant.org, and particularly, the
following command:
/usr/bin/pngquant -f --skip-if-larger --ext .png --speed 1 image.png
Before: 47584K
After : 34924K
The only major difference with the EE version is the change from a light and dark logo to only a header logo
The dark logo wasn't used anyway, so it seemed to make sense to me to rename the field to the actual function of it
