Charts
Pulls the most recent measurement of every site (excluding starter projects). Tooltips are only shown on green (well scoring) data points.
Page Weight vs LCP 7 sites
JavaScript Weight vs LCP 7 sites
TTFB vs LCP 7 sites
Web Font Weight vs CLS 7 sites
Performance vs Third Party 7 sites
Lighthouse’s Performance score weighed against third-party weight — usually things like analytics, embeds, fonts, tag managers, ads.
Performance vs DOM Elements 7 sites
Lighthouse’s Performance score against DOM element count. A big document is paid for in style and layout work on every frame.
Client Rendering by Generator 7 sites
Sites that painted nothing with scripts disabled, by the tool their page reports building it. One row per generator: a dot for how many of its sites were judged, a dot for how many came up blank, and a line joining them — so the length of the row is the size of the sample the finding came out of.
1 empty pre-JavaScript blank pages from 7 measured sites.
The other 1 generator flagged nothing across 4 judged sites between them — mostly on samples of a handful of sites each.
Field vs Lab LCP 7 sites
One row per site, ordered by our throttled lab run: a dot for what the lab measured, a dot for what real users actually saw (Chrome’s field p75) and a line joining them. Sorting by the lab figure straightens it into a curve, and the field dots scatter across it.
The lab is slower than reality on 5 of these and faster on 2.