Eightify is an AI-powered YouTube video summarizer that transforms video content into structured key insights, timestamped summaries, and full transcripts. Available as a Chrome extension, Safari extension, Android app, and iOS app, it integrates directly into the YouTube interface and activates with a single click on any video page.

The tool delivers three distinct output modes for each video. Key insights extract the most important concepts from the content. Timestamped summaries enable users to navigate directly to specific segments without viewing the entire recording. Full transcripts capture all spoken content, including videos where official captions are unavailable.

Eightify supports over 40 languages, allowing users to summarize and transcribe videos across a broad range of languages regardless of what language the original content is in. It handles content of any length, from short clips to multi-hour recordings including lectures, podcast episodes, interviews, and news segments. Summaries can be shared via a dedicated link or exported as an article in one click.

The service operates on a freemium model with a limited free tier and a premium subscription for unlimited access. It is developed by Rational Expressions Inc. and serves students, professionals, researchers, and general viewers who need to evaluate or extract information from YouTube content efficiently.