Optimizing your media library is a quick win for both site speed and organic...

https://www.ready-bookmarks.win/why-focusing-only-on-new-links-hurts-your-seo-the-importance-of-an-80-23-backlink-survival-rate

Optimizing your media library is a quick win for both site speed and organic visibility. Start by using descriptive filenames and adding helpful alt text to every file