Is it possible to search uploaded images, for example type 'pie chart' and see the images connected to those posts?

  • If you're willing to do ~100 at a time you can use the StackExchange API (see this and use filter=withbody). Then you can pull out image tags. You can also do that for a specific user with users/{ids}/answers. I have a service connection lying around on the site that might help with this too. You can also use this .mx dump of answer metadata as a starting point for searches.
    – b3m2a1
    Aug 29 '18 at 18:17

Your best bet is to use Google I guess. Try to search like this

pie chart site:https://mathematica.stackexchange.com/
  • Yes, that only shows a small subset. Aug 29 '18 at 9:30

AFAIK, halirutan has provided the most effective way to search for image using Google.

For SE's own tools, no, it's not really possible since images are stored just as that, image files. There's no metadata that describes if an image is a pie chart or anything else.

If users properly describe the alternative text on image markdown as "pie chart", e.g.

![example of pie chart](https://i.stack.imgur.com/i0ey1.jpg)

then it's possible to search for that using SEDE (as of writing, there's none). However, SEDE is updated each week.

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