The heaviest thing on the page

A while back I had a bit of a tidy-up . Shrank some chunky .ico logos, swapped the RSS icon for an .svg , and felt very pleased with myself. ~29KB a page. Job done, small web achieved, etc. Except...perhaps because I was focused on that one post, which had no images, I missed the very obvious thing to optimise. At first I thought that would mean just making everything a lossless .webp but…