“WAIT” is a web service that allows you to search for a single image to find out what kind of anime it is and how many episodes it contains. And I tried it out.
So I picked one jojo pic from google image. Copied the link address and pasted it into the web (trace.moe).
Then the result came out, with subtitle and a short video.
With all details….
It is a really nice web-service! When you saw a pic and forget what anime is it or which episode it is… Use this site!