I built up a similar extension to show MPAA rating on Douban and Zhihu. Though the extension is in Chinese, I setup a server to host all movies data to avoid the requests limit of omdbapi. Updating backend data frequently is definitely a hard job to do. I could guess why omdbapi is asking for support on patreon. Here's the extension link, if you don't mind I post it here :) https://chrome.google.com/webstore/detail/mpaa-%E7%94%B5%E5%...