GoogleChrome/web-vitals-extension
A Chrome extension to measure essential metrics for a healthy site observed · 2026-08-28
Health v2 · maintenance only
10/100
- Activity 4
- Release rhythm 28
- Longevity 100
Flags: archived
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 60.5
- age_days: 2337
- days_rel: 601
- days_push: 576
- n_releases_24m: 3
Adoption not part of the score
2380 stars · 108 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
A Chrome extension by Google that measures Core Web Vitals (LCP, CLS, INP) plus diagnostic metrics (TTFB, FCP) in real time, matching how Chrome reports them to Google tools. It reached end of life in January 2025 as its functionality moved into the Chrome DevTools Performance panel.
Use cases
- measure core web vitals for a page
- check LCP CLS and INP in the browser
- debug layout shift on my site
- see real user experience metrics while browsing
- compare local metrics with CrUX and PageSpeed Insights
- monitor web performance during development
When to choose
- you are on Chrome 131 or earlier and need quick in-browser Core Web Vitals measurement
- you need a feature of the extension not yet available in DevTools live metrics
When to avoid
- you use Chrome 132 or later - use the DevTools Performance panel instead
- you need maintained or updated tooling - the extension no longer receives updates
- you need lab-based performance auditing rather than live field-style metrics
Facets
plugin · maturity abandoned
monitoring analytics developer-tools web-development frontend performance developer-tools browser browser-extension core-web-vitals chrome-extension web-performance lcp cls inp devtools end-of-life
2 sources
- readme: https://github.com/GoogleChrome/web-vitals-extension · fetched 2026-08-28 · 4facd0fcf3b5
- homepage: https://chrome.google.com/webstore/detail/web-vitals/ahfhijdlegdabablpippeagghigmibma?hl=en · fetched 2026-08-29 · 67ddc599a679
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| GoogleChrome/web-vitals-extension | main | 10 |
For agents
markdown · JSON · MCP: product_card(name="GoogleChrome/web-vitals-extension")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem