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Webpage Performance Test Result

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Core Web Vitals

This page details results from metrics that Google has deemed Core Web Vitals . For more information about these metrics and their significance, check out our Core Web Vitals Guide.

Observed Web Vitals Metrics (Collected in this WPT test run)

Cumulative Layout Shift

0

Total Blocking Time

.00S

Real-World Usage Metrics

Compare this WebPageTest run with browser-collected performance data for this site.

(Collected anonymously by Chrome browser from July 6, 2024 to August 2, 2024 | Full Report)

Largest Contentful Paint (LCP)

4.11S (poor)

At 75th percentile of visits.

  • 60%
  • 15%
  • 25%

Field metric only, no WPT test run data.

Cumulative Layout Shift (CLS)

0.79 (poor)

At 75th percentile of visits.

  • 18%
  • 2%
  • 80%

0.79 worse than this WPT test run's first view (0). Why?

Note: Why can real browser usage metrics vary from test run metrics?

Variance between your test run and real world usage is expected because a WebPageTest run uses a specific connection speed, and real world data spans all connection speeds. To closely match the p75 user in WebPageTest, try rerunning your test using a different connection speed.

Cumulative Layout Shift (0)

View as Filmstrip - View Video - About Cumulative Layout Shift (CLS)

Total Blocking Time (0 ms)

About Total Blocking Time (TBT)


View in Chrome Dev Tools Performance Panel

Main Thread Blocking Time by Script Origin

Script Origin Blocking Time (ms)
dtaconnect.eohhs.mass.gov1148
www.googletagmanager.com50