Optimizing images is a quick win for your site’s speed and search ranking....

https://www.bestbookmarks.win/stop-letting-unoptimized-images-tank-your-site-speed-start-by-renaming-files

Optimizing images is a quick win for your site’s speed and search ranking. Start by using descriptive filenames and helpful alt text for accessibility. Shrink file sizes with tools like ShortPixel or TinyPNG to keep pages snappy