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SummifyYT Extension

Skims YouTube comment sections and boils them down to a quick summary.

Checked 5 Oct 2026 Reviewed by Alex Listed since October 2024

Screenshot of SummifyYT Extension

At a glance

Starts at Free No paid plan found on the Chrome Web Store, September 2026.
Free tier Yes
Platforms Chrome
Best for Viewers wanting the gist of busy comment sections
Not for Anyone wanting to read every comment themselves

3.9 out of 5

Scored by Alex after real use

Our verdict

SummifyYT scans a YouTube video's comments and produces a summary so you can catch the general reaction without scrolling through hundreds of replies. A GPT-4 option can be switched on, and you can set your preferred summary language, but you have to already be logged into ChatGPT for it to work at all. Ratings sit at 2.8 out of 5 across a small sample, suggesting the experience is inconsistent for at least some users.

✓What it does well

Comment section summariesCondenses a video's comments into a quick overview.
Optional GPT-4 modeCan be switched to use GPT-4 instead of the default model.
Language settingLets you choose the language of the generated summary.

✕Where it falls short

Requires a ChatGPT loginIt only works if you are already logged into ChatGPT.
Mixed user ratingsIt averages only 2.8 out of 5, a sign the experience is inconsistent.
Comments only, not video contentIt only summarizes comments, not the video's own content.

Key features

Comment summarizationSummarizes the comments on a YouTube video.
GPT-4 optionOffers a setting to enable GPT-4 for summaries.
Auto-start controlLets you disable automatic summarization on page load.
Summary language settingLets you set your preferred language for summaries.

Questions about SummifyYT Extension

What does SummifyYT Extension do?

SummifyYT Extension scans the comments on a YouTube video and produces a summary, so viewers can catch the general reaction without scrolling through hundreds of replies. It summarizes comments only, not the video's own content. Automatic summarization on page load can be switched off.

Is SummifyYT Extension free?

SummifyYT Extension is free, with its only listed plan priced at $0. No paid plan was found on the Chrome Web Store when Toolio checked in September 2026. It runs as an extension for Chrome.

Does SummifyYT Extension need a ChatGPT account?

Yes. SummifyYT Extension only works if the user is already logged into ChatGPT, which the reviewer lists as a shortcoming. A setting can switch summaries to GPT-4 instead of the default model, and the summary language can be set to the user's preference.

Is SummifyYT Extension reliable?

User ratings suggest mixed results. SummifyYT Extension averages only 2.8 out of 5 across a small sample, which the reviewer reads as a sign the experience is inconsistent for at least some users. Toolio's own score is 3.9 out of 5, given by Alex on 5 Oct 2026.

What are some alternatives to SummifyYT Extension?

Toolio lists Horus Chrome Extension, which summarizes any webpage and answers questions about it, and Glarity, which uses ChatGPT to summarize and translate web pages. Focal and Voxweave are also listed as alternatives to SummifyYT Extension.

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