Optimizing images is the easiest way to boost speed and search ranking. Start...

https://gunnersuniquedigest.image-perth.org/how-do-i-write-alt-text-for-decorative-images-that-do-not-matter

Optimizing images is the easiest way to boost speed and search ranking. Start by naming files descriptively—ditch the generic "IMG_001"—and write alt text that actually describes the content