About
About YouTubeSummarizer
We build a YouTube video summarizer you can check. Plenty of tools will tell you what a video said — the hard part isn't producing a summary, it's producing one you have any reason to believe.
Why this exists
Video became the default way to explain things, and it's a terrible format for retrieval. You can't skim it, you can't search it properly, you can't quote it without a stopwatch, and you can't tell from the outside whether the useful part is at four minutes or forty.
The obvious fix is a summary. The problem with most summaries is that they arrive as a block of confident prose with no way back to the source. If it's right, great. If it quietly dropped the caveat that made the claim true, you'd never know — and the more fluent the summary, the less likely you are to check.
So the thing we actually care about here is the link back. Every chapter carries the second it starts, and how the summarizer builds those chapters is written up in full rather than left as a claim. Every claim can be traced to where it was said. The summary is a map, and the video is still the territory.
What we believe
A summary you can't check is a rumour
Timestamps aren't a feature, they're the point. If verifying a claim takes more effort than accepting it, nobody verifies anything, and the tool has quietly become a machine for manufacturing confidence.
Say when you don't know
When there's no transcript, you get told there's no transcript. Not a plausible-sounding summary assembled from the title and the thumbnail. The failure cases are where a tool's honesty actually gets tested.
Hedges are content
"We think this might generalise" and "this generalises" are different claims. Summarization that smooths the first into the second isn't compression, it's distortion — and it's the most common way these tools mislead.
Your notes belong to you
Everything exports as plain Markdown that works anywhere. No lock-in, no proprietary format, no requirement to keep paying us to read something you already made.
How we make money
Subscriptions, and only subscriptions. There are no ads, and we don't sell usage data — the videos you summarize are a record of what you're trying to learn, which is about as personal as browsing history gets. The free and paid plans are set out in full, and the free one is genuinely free rather than a harvesting operation; it exists because the fastest way to find out whether this is useful to you is to use it.
Where we are
Small team, fully remote, and reachable. If something's broken, slow, or wrong, tell us — we read everything, and the failure reports are how the thing improves.
Judge it on a real video.
Pick something you already know well and see whether the summary earns your trust.
Summarize a video — free