Glarity Review (2026): Free YouTube Summary Extension — and When to Skip It
Glarity is a free browser extension that summarizes on the YouTube page; YT Summarizer is a web app with structured output. Pros, cons, and which fits you.
Glarity and YT Summarizer both summarize YouTube videos, but they take opposite approaches: Glarity is a free browser extension that lives on the YouTube page, while YT Summarizer is a standalone web app. Here's the honest comparison.
What each one is
Glarity is a free browser extension (Chrome, Edge, Safari, Firefox, Opera) that adds an AI summary beside YouTube videos and Google results, powered by ChatGPT-style models. It's free and unlimited for basic use. YT Summarizer is a web app: paste a URL anywhere, get a structured summary with timestamps saved to a library, on a pay-once model.
Side by side
| Factor | Glarity | YT Summarizer |
|---|---|---|
| Form | Browser extension (on-page) | Web app (paste a URL) |
| Install | Extension + permissions | Nothing to install |
| Price | Free (optional Plus) | Free tier (5), then packs |
| Output & library | On-page summary | Structured + saved library |
When Glarity wins
If you want a free, unlimited summary that appears right on the YouTube page as you browse — and you don't mind installing an extension and granting it permissions — Glarity is excellent value at $0. It also summarizes web pages and search results, which is a nice bonus. For browse-and-summarize-in-place, it's hard to beat for free.
When YT Summarizer wins
If you'd rather not install a browser extension (or can't, on a managed or mobile device), prefer cleaner structured output, and want a searchable library of your summaries, the web app fits better. It works from any browser including phones, with no permissions to grant — see summarizing without an extension and our take on summarizer extensions.
On price
Glarity is free, which is a genuine advantage. YT Summarizer has a free tier (5 summaries) then one-time packs from $19 — no subscription, credits never expire. The trade is "free extension you install" versus "pay-once web app you don't." If extensions aren't your thing or you want polished, saved output, the small one-time cost is worth it.
Getting started
Install Glarity if you want a free on-page summary, or try YT Summarizer free (five summaries, no install) if you'd rather paste a URL and keep a library.
Frequently Asked Questions
Is Glarity free?
Yes, Glarity is a free browser extension with unlimited basic summaries and an optional Plus plan. You install it and it summarizes on the YouTube page.
Why use YT Summarizer instead of a free extension?
If you can't or don't want to install an extension (managed devices, mobile), prefer cleaner structured output, or want a searchable library, the web app fits better — nothing to install and no permissions to grant.
Does YT Summarizer need an extension?
No. It's a web app — paste a URL in any browser, including on your phone. There's a free tier (5 summaries) then one-time packs.
Ready to try YT Summarizer?
Paste a YouTube URL and get structured key points in about a minute.
Start Summarizing →