Google have really stolen an accessibility march on Apple with image descriptions with rich detail, built right into Talkback.
No more sharing to other apps, just focus on an image, single tap with three fingers and select Describe Image.
Browsing images on social media has never been so interesting or easy.
Here is an example, taken at Bewdly safari park:

A rhinoceros is standing in a grassy field in front of a wooden fence. The rhinoceros is facing the left of the image, its head is down and its long horn is visible. The rhinoceros is gray in color with a large, bulbous body and short, thick legs. The grass in the field is a vibrant green. The fence is made of brown wood and has a wire mesh on top. Beyond the fence, there are trees with green foliage. The image is taken from a slightly elevated angle. The time is 11:29.
Thank you Google. As a totally blind person from birth, I never thought I would be interested in pictures, I love them now.