Gify search in new tab browser extension for chrome. And many more,
To get start clone first. Enable developer and the extension from where you cloned.
Create an api key in giphy https://developers.giphy.com/
After you get your key, to import in extension you have to create a file name apiKey.js inside js folder and the following code in the file with your api key
apikey='<Your api Key>'
Your extension should be ready, test it by opening new tab!