Optimizing images is a quick win for site performance and rankings. Start by...

https://www.cast-bookmarks.win/large-images-are-the-fastest-way-to-wreck-your-site-performance-before-hitting

Optimizing images is a quick win for site performance and rankings. Start by renaming your files to be descriptive before uploading—nobody wants to see "IMG_001.jpg" in their media library. Add relevant alt text for both accessibility and search context