Core Web Vitals Visualizer
Chrome extension by MarketingTracer · Productivity · Developer
- Featured
- Established publisher
- Trader
A Chrome extension in Productivity · Developer with 10 000 users, an established extension. Audience over the last 30 days: unchanged.
No site access is declared in the manifest, so it cannot read the pages you open on its own.
What the developer says, and 5 screenshots
Loading from the Chrome Web Store. Open the listing if it does not appear.
- Users
- 10 000
- Users, last 30 days
- Unchanged (the store rounds this count to 10 000, so it moves only between steps)
- Rating, last 30 days
- Steady over 30 days
- Version
- 1.22
- Updated in the store
- 2026-10-10
- Published
- 2022-10-29
- Manifest
- V3
- Browser access
- 1 permission
How it has moved
- 2026-10-3110k
- 2026-10-31reviews19
- 2026-09-0110k
- 2026-10-3110k
- 2026-09-01reviews19
- 2026-10-31reviews19
A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.
What it can reach
No site access is declared in the manifest, so it cannot read the pages you open on its own.
-
Attach to pages the way developer tools do
debugger
Version history
- Version 1.22
What changed recently
- Package size changed
- Store description rewritten
- Released version 1.22 (was 1.21)
The publisher
MarketingTracer publishes 3 listings we track, 19k users between them. Listed website: corewebvitals.io.
-
CLS Visualizer 9k users
-
Website Cache Warmer 303 users
Like this one
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Site Speed Insights: Web Vitals Visualizer 27 users
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Core Web Vitals Test 8k users
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Site Speed by DebugBear 9k users
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Perform - Core Web Vitals Analyzer 7 users
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Testeur performance web 42 users
The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.
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Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.
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The badge shows the audience and rating from our last pass over the store and links back to this page.
[](https://extops.dev/extensions/mcffmgagphgpgkdclllnilokablhjcge)<a href="https://extops.dev/extensions/mcffmgagphgpgkdclllnilokablhjcge"><img src="https://extops.dev/extensions/mcffmgagphgpgkdclllnilokablhjcge/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store has not changed these figures since 2026-09-01, when we first saw this listing. We publish no contact details for extension developers.