Don’t let bloated images ruin your load times. Always use descriptive filenames...

https://spark-wiki.win/index.php/How_Long_Should_Alt_Text_Be%3F_The_Definitive_Guide_to_Image_SEO

Don’t let bloated images ruin your load times. Always use descriptive filenames and helpful alt text to boost accessibility and SEO. Before uploading, run your files through ShortPixel or TinyPNG to strip away unnecessary data without losing quality