Paste a YouTube link (or open the extension on any YouTube video): the full transcript appears at once and the notes are written in English, Deutsch, Español, Português or 日本語, whatever language the video speaks. Every time in the notes is checked against the video’s own caption lines; click it and the video jumps there.

Free, no account: 3 AI summaries every day (a video already summarized in your language costs nothing), unlimited transcripts with clickable times, search inside a transcript, copy and .md / .txt / .srt downloads, a library of every summary in your browser.

Pro ($6 a month or $48 a year): 40 summaries a day, videos up to 300 minutes, Study mode with quiz questions and answers, a new Obsidian note in one click, Copy for Notion (headings, lists and time links paste as blocks), search inside every saved transcript and note, export the whole library. Cancel in your Whop account; your notes stay in your browser.

The Edge and Firefox extension adds a Summary button on every YouTube video and reads lecture videos with captions on other sites. Not affiliated with YouTube or Google.