Optimizing images is the fastest way to boost site speed and search rankings....

https://www.stall-bookmarks.win/stop-slowing-your-site-down-with-bloated-image-files-start-by-renaming-files

Optimizing images is the fastest way to boost site speed and search rankings. Start by using descriptive filenames and helpful alt text for every upload. Run files through ShortPixel or TinyPNG to shrink sizes without hurting visual quality