There may be books which are broad introductions to certain periods or painters, which may feature digestible painting descriptions since they’re written for a general audience. Kind of like what you see in Alex Ross’s “The Rest Is Noise,” a book about classical music, featuring concise descriptions of the music discussed, but for visual art. Scouring the Art category of a book website like Bookshare or Open Library may help you find a useable book. You could also post to an Art History Subreddit, the users there may know whether such descriptions exist, and where they can be found. You could use a service like Be My Eyes or Aira, to get descriptions, though they may lack some of the insight you seek. Another idea is getting in touch with docents at a museum, via a museum’s website— oftentimes, the docents giving tours are artists themselves, so can provide artistic insight as well as concise descriptions of various paintings. A museum’s Accessibility department can often help with getting in touch with docents.