What do the different SpeedCurve metrics represent?

Glossary of metrics you can track with Synthetic and LUX Real User Monitoring.

Written by Steve Souders
Updated yesterday

Lighthouse scores and audits

We've added Google Lighthouse scores to SpeedCurve. Here's why – plus how to see your scores if you're already a SpeedCurve user.

Written by Tammy Everts
Updated over a week ago

Why are the SpeedCurve results different from my other test results?

Written by Mark Zeman
Updated over a week ago

Hero rendering times

How we identify the hero rendering times & adding element timing

Written by Mark Zeman
Updated over a week ago

Blocking JS & CSS

How SpeedCurve detects blocking JavaScript and stylesheets

Written by Steve Souders
Updated over a week ago

How is Speed Index calculated?

What is the Speed Index score and why does it sometimes not align with your other metrics?

Written by Tammy Everts
Updated over a week ago

How to remove a single data point from your test averages

If outlier test results are bumping out your averages, here's how to exclude them.

Written by Tammy Everts
Updated over a week ago

Why don't my charts change when I select median, average, and 95th percentile?

Written by Joseph Wynn
Updated over a week ago

LUX Query Timeouts

How to avoid having LUX queries time out.

Written by Steve Souders
Updated over a week ago

Data Protection & GDPR Compliance at SpeedCurve

Written by Mark Zeman
Updated over a week ago

Why does my fully loaded time fluctuate so much?

Some pages may have very high or fluctuating fully loaded times. Here's why.

Written by Joseph Wynn
Updated over a week ago

Google PageSpeed Insights

Now deprecated in favour of Lighthouse Performance

Written by Mark Zeman
Updated over a week ago

Time Labels in Charts

What exactly do the time labels in the charts mean?

Written by Steve Souders
Updated over a week ago