It works very well. Here are a few suggestions :

- When we open a YT video using "Open in new tab" (back-end), we have to reload the webpage to see the "Summarize" button when we access the tab, which is annoying.

- It's not clear how to access preferences, for example to change language.

- That would be great to have an option to disable "Minutes saved"... because I think most people don't care about that. It would help to keep a clean and minimal user interface.

- The number of "Minutes saved" is not accurate, because it takes time to read the summary, and the number that is displayed is the duration of the video. For instance, for a 30-minute video, if it takes 2 minutes to read the summary, number of minutes saved is not 30 but 28. You could reduce the number based on how long is the summary (number of words) and the average reading speed.

- The summary is great, but it would be better if it was not always referring to "The text describes..." or "The author...". I understand that the summary is from the transcript, which is text, but that would be more accurate if there was a way to tell the AI that the source is a video, and not a text (i.e. the speaker instead of the author, or the video instead of the text).

IMO, the first and the last comments should be the most important to improve. Overall, a very good extension, very simple and accurate.