Surface style recalculation work in the page-x-ray diff#168
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Sitespeed.io / browsertime HARs include the count of elements the browser re-styled and the time it spent doing so before FCP and LCP — a real lever for regression hunting that today doesn't show up anywhere in compare. Render the four numbers under the existing Render blocking section so a slow paint caused by an exploding style scope is one glance away from the rest of the metric deltas. Depends on the pagexray release that adds renderBlocking.recalculateStyle; the bundled pagexray.min.js will be bumped in a follow-up once that release ships. Co-authored-by: Claude Opus 4.7 (1M context) noreply@anthropic.com
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Sitespeed.io / browsertime HARs include the count of elements
the browser re-styled and the time it spent doing so before
FCP and LCP — a real lever for regression hunting that today
doesn't show up anywhere in compare. Render the four numbers
under the existing Render blocking section so a slow paint
caused by an exploding style scope is one glance away from the
rest of the metric deltas.
Depends on the pagexray release that adds
renderBlocking.recalculateStyle; the bundled pagexray.min.js
will be bumped in a follow-up once that release ships.
Co-authored-by: Claude Opus 4.7 (1M context) noreply@anthropic.com