You can summarize publicly accessible videos when YouTube provides usable captions. Private, unavailable, or captionless videos cannot currently be processed.

Not currently. The summary is generated from the video’s available captions, so the tool will stop and tell you when no usable captions can be found.

It is free and does not require an account. The service uses a shared daily AI allowance, so new summaries may pause until the next day after that allowance is used.

Yes, when usable captions are available. The generated summary follows the current page language, so switch the site language before submitting to choose the output language.

Use Structured Summary for an overview, Connected Ideas for the flow of an argument, Key Takeaways for a short list, or Detailed Article when you want more of the source information preserved in a readable article.

The summary is generated from the available captions. Check important facts, names, and quotations against the original video.

Completed summaries are saved automatically and associated with your current browser. Clearing browser data or switching browsers may prevent you from finding the same private result again.

Common reasons include missing captions, an unavailable video, exhausted shared daily AI capacity, or a temporary network problem. Check the message shown by the form before trying again.

YS Summarizer is the free YouTube summarizer available at youtubesummarizer.org. It turns available video captions into readable summaries in several languages and styles.