Since 2017, to make Facebook accessible to blind people, they automatically tag each photo on Facebook with both nouns and verbs for computers to read to blind people.
But, these image captions can be used to search photos by keywords and actions.
Using the google ‘site:’ operator, we’ll perform an image search inside Facebook.com, and search for the words or actions we want – site:facebook.com “image may contain X” (inside google image searches)
For example – ‘site:facebook.com “image may contain boarding pass to new york”‘ will return pictures of boarding passes on Facebook that contain ‘new york’. Change “boarding pass to new york” with any other phrases, nouns, and verbs and you’ll get the images with these words in the captions.
In some cases, searching without “image may contain” will also work O.K.
You can also search for certain people, furniture, fruit, objects, and so on, and get images that match these criteria. For example – site:facebook.com “image may contain 16 people”