Spokes.wiki Search About
Defined Term standard stable
Created
Updated

Core Web Vitals

Which lens this is. The platform scoreboard: how static-site generators and hosting platforms compete on these numbers. The metrics themselves — definitions, thresholds, and the SEO-and-performance consequence — are webperf-wiki/core-web-vitals, the canonical target for a bare [[core-web-vitals]]. Deliberate dual-lens (HUB.md).

Google's standardized field metrics for real-world page experience (loading, interactivity, visual stability — LCP / INP / CLS). Used across our sources as the runtime performance yardstick that distinguishes platforms.

In our sources

  • astro: 66% of real sites pass (Astro's own data) — ahead of wordpress (48%), Gatsby (47%), Next.js (30%), Nuxt (28%).

  • wordpress-market-share-decline lists weaker Core Web Vitals among the structural reasons share is leaking to faster platforms.

  • core-web-vitals-wordpress-astro — an independent CrUX field-data ranking (Apr 2026) of seven platforms: Duda 85%, Wix 80%, Shopify 79%, Astro 67%, Drupal 64%, Joomla 58%, WordPress 49%. Corroborates Astro (~66–67%) and WordPress (~48–49%) from a more neutral source, but shows Astro is mid-pack, behind hosted site builders.

  • Eleventy cannot be given a number on this list, and the reason is the finding. speedlify measures 1,145 Eleventy sites weekly at a median Lighthouse performance of 98 — but only 118 of them have CrUX field data at all. Every other entry above is a field pass rate; 98 is a lab median, and they are not the same measurement. Nine in ten Eleventy community sites are too small for CrUX to report. This scoreboard is only defined for platforms whose sites get enough traffic to be measured, which quietly excludes the small-site end of the genre — personal sites, docs, blogs — where Eleventy, Jekyll and Zola live.

Page weight is not destiny

core-web-vitals-wordpress-astro argues real-world CWV is driven by architecture and efficient delivery, not minimal payload: Shopify has the heaviest median page (3.77 MB) and worst lab scores yet ranks 3rd in the field. This is the key tension with the sibling webperf-wiki (byte-budget minimalism) — see synthesis.

Cross-wiki note

This is the natural bridge to the sibling webperf-wiki (page-weight minimalism, byte budgets): Core Web Vitals is where the static-site-generator story and the web-performance story meet. Links are kept within a wiki, so this page just flags the adjacency rather than linking across — see synthesis.

static-site-generator · static-site-publishing · astro · wordpress · core-web-vitals-wordpress-astro · wordpress-market-share-decline · speedlify · eleventy-performance-docs · synthesis

Related pages

Links to

Linked from