IMDb remains the dominant platform for rating individual TV show episodes. Every episode gets its own IMDb page with a 1-10 star rating system where registered users can vote. You'll see the average score, vote count, and rating distribution for each episode, plus season and series-wide averages. IMDb's dataset is massive because it's been around since 1990 and became the default reference database that Google and Amazon integrate with. TVDb (TheTVDB) is another solid option, particularly popular with media server software like Plex and Kodi. It focuses more on episode metadata—air dates, summaries, cast—but does include community ratings. The user base is smaller than IMDb, so vote counts run lower, but the data is often more current for niche or international shows. Rotten Tomatoes provides episode ratings for some series, usually high-profile streaming or prestige TV. They split critic scores (Tomatometer) from audience scores, which can be useful if you want professional critics' takes versus general viewer sentiment. Coverage is spottier than IMDb, though. From a web design and SEO perspective, if you're building a TV review site or entertainment blog, scraping or linking to IMDb ratings is common practice. IMDb allows limited non-commercial use of their data, and their URLs are clean and persistent, which makes them good citation targets. TVDb offers a free API for developers, which is why app builders prefer it. Rotten Tomatoes locks down their data more tightly. At Ottawa SEO, when clients in the entertainment vertical want episode-level content, we typically recommend structuring pages around IMDb's episode identifiers and cross-referencing TVDb for metadata completeness. User-generated ratings drive engagement, so if you're building a community feature, integrating IMDb scores via their widget or API keeps your content authoritative without maintaining your own voting infrastructure. Just make sure your Terms of Service align with their usage policies, especially if you're monetizing.