Free YouTube video summarizer
Paste a YouTube link and get a summary in short titled sections. Lectures, talks, tutorials, interviews. No signup, no card.
Free to use. Free to keep.
The tool needs no account. A free account saves every result, adds the full study kit, and syncs to your phone.
This free YouTube summarizer turns a video with captions into a short summary with titled sections. Paste the link and get the point of a 90 minute lecture in about a minute. Skim the sections, jump to what matters, and skip the rest. No sign up and no card.
Paste the YouTube link
Paste a YouTube link. No account needed.
Run the tool
The AI reads your source on our server and writes the result. A long file takes a little longer.
Study or save
Use it right away, or save it to a free library and get the full study kit from the same source.
Why use this youtube summarizer
Sections you can skim
The summary comes back as short titled parts, so you see the shape of the video without a play button.
No watching required
It reads the captions. You read the summary. A 90 minute talk takes a minute to size up.
Most videos work
Any video with captions, auto-generated ones included. That covers most of what is on YouTube.
Then study it
Turn the same video into flashcards, a quiz, or a mind map once you know it is worth the effort.
Who it's for
Students
Get the outline of a recorded lecture before class, so you follow along instead of catching up.
Busy learners
Decide in a minute whether a 2 hour talk deserves 2 hours of your evening.
Content creators
See how a long video is structured before you cover the same subject yourself.
Questions
Does it work on any video?
Any video that has captions, including auto-generated ones, which is most of them. Paste the link and it reads those captions.
How long a video can it handle?
Long lectures are fine. Very long videos get trimmed to about 12,000 characters per run. Sign up free to process the whole thing.
Do I have to watch the video first?
No. Nothing plays. The summary is built from the captions, so you can read it and decide if the video is worth your time.
Is it free?
Yes, no account needed. Sign up free to save the summary and turn the same video into flashcards and a quiz.
Study it on your phone too
Synapsi runs on the web, iPhone, iPad, Mac and Android. One free account, the same notes everywhere.
Related study tools
Got a PDF instead? Pull the text out first, then run any study tool on it.