Turn every YouTube video
into a knowledge map.
Summaries, live Q&A, comment-section distillation, Channel X-Ray, and 17 knowledge topologies — all happening right inside the YouTube page.
Completely free during beta
Watching is easy. Keeping the knowledge is not.
Information is scattered
Chapters, description, comments, related videos — none of them talk to each other.
No time for long videos
In a two-hour interview, the part you actually need might be ten minutes.
Needle in the comment haystack
The best additions, corrections, and counterpoints hide among thousands of comments.
Six things it does without ever leaving YouTube
17 knowledge topologies — the right one, chosen automatically
History becomes a timeline, product battles become a tournament bracket, controversies get dissected into argument structures. Different content gets a different shape of knowledge — not one-size-fits-all bullet points.
Video summaries that grow into mind maps
Chapters, description, and content get distilled into structured knowledge nodes. You don't get a wall of text — you get a map with visible context, and every node links back to the original moment in the video.
Ask the video anything
“What was the evidence behind that claim at minute 40?” Don't scrub back and rewatch — just ask. Answers come from the video's own content, not guesses from the web.
Thousands of comments, distilled into a few camps
The comment section stops being noise. Support, doubt, corrections, first-hand experience — each camp is laid out separately, and the most valuable voices float to the top.
See through an entire channel at a glance
Before you subscribe, take an X-ray: which topics the channel is strong on, how quality is distributed, whether it deserves a long-term follow — without trial-and-error, video by video.
The world's best channels, mapped as a galaxy
Top channels from every field, gathered into a roamable star map — sorted by knowledge domain and graded by influence tier — so you can spot creators worth following and unearth hidden-gem channels at a glance.
Three steps from video to map
Install the extension
Free during beta — takes a minute.
Open any YouTube video
No tab-switching — the panel appears right next to the video.
Generate your knowledge map in one click
It syncs to your vault automatically — revisit and share anytime.
One topic branches into a whole web to explore
Start from any concept and follow it outward — into supporting takes, counterpoints, origins, and hands-on angles. A single video becomes an exploration map you can keep wandering, and everything you generate lives in your portal gallery and vault to revisit and share.
The more you explore, the brighter your sky gets
Every context you expand and every video you understand lights up another star on your map. The ones you've visited turn “explored”, the ones you've truly mastered turn “mastered”, and over time they link into a constellation that's yours alone.
Three questions, three straight answers
Does it cost anything?
It's completely free during the beta.
Which languages are supported?
Seven languages: Traditional Chinese, English, Japanese, Spanish, French, German, and Hindi.
Where does it run?
Right inside the YouTube page — no tab-switching, no copy-pasting links.
Your next video deserves a map
Completely free during beta