A reverse gif search will search through images to find the URL of an animated GIF. You could try GIPHY service.
There are 3 ways to do reverse GIF search:
- Google Images – Just like a regular image reverse search
- Bing – Similar to Google, they have built-in tool called Bing Image Match
- Yandex – To perform reverse GIF search in Yandex you need to click on the camera icon and upload the GIF from the computer.