PNGs are not opimised (performance issue)

[jaller94]

Google Lighthouse identified that we ship PNGs with a larger file size than needed:

One script which may help is:

# Warning: If the optimization fails or the file can't be optimized, the file ends up as a 0 byte file
find . -name '*.png' -exec mv {} {}.old \; -exec pngcrush {}.old {} \; -exec rm {}.old \;

[thibaultamartin]

Zola seems to support image resizing out of the box, wich we're not making use of in the v1. We also rely heavily on svg rather than pngs/jpgs when possible

https://www.getzola.org/documentation/content/image-processing/