CSS coverage (used vs unused)

LCP INP CLS

No data for CSS coverage (used vs unused) this edition.

Related signals Iframes per page → Image fetchpriority → Responsive image markup → Script coverage (used vs unused) → Chrome field data from 189,915 sites, representing millions of real page loads · How we measured

Live queries (3) — admin only

Query #1: 250.3 ms

SELECT COUNT(*) AS count,
            quantile_disc(m.stylesheets.coverage.used_kb, 0.10) AS p10,
            quantile_disc(m.stylesheets.coverage.used_kb, 0.25) AS p25,
            quantile_disc(m.stylesheets.coverage.used_kb, 0.50) AS p50,
            quantile_disc(m.stylesheets.coverage.used_kb, 0.75) AS p75,
            quantile_disc(m.stylesheets.coverage.used_kb, 0.90) AS p90,
            quantile_disc(m.stylesheets.coverage.used_kb, 0.99) AS p99
            FROM sites WHERE m.stylesheets.coverage.used_kb IS NOT NULL;

Query #2: 248.6 ms

SELECT CASE WHEN m.stylesheets.coverage.used_kb >= 0 AND m.stylesheets.coverage.used_kb < 50 THEN 0 WHEN m.stylesheets.coverage.used_kb >= 50 AND m.stylesheets.coverage.used_kb < 100 THEN 1 WHEN m.stylesheets.coverage.used_kb >= 100 AND m.stylesheets.coverage.used_kb < 150 THEN 2 WHEN m.stylesheets.coverage.used_kb >= 150 THEN 3 END AS bucket_idx, COUNT(*) AS n,
            quantile_disc(crux."all".lcp, 0.5) AS median,
            COUNT(*) FILTER (WHERE crux."all".lcp IS NOT NULL AND crux."all".lcp <= 2500) * 1.0 / NULLIF(COUNT(*) FILTER (WHERE crux."all".lcp IS NOT NULL), 0) AS good_pct
            FROM sites WHERE m.stylesheets.coverage.used_kb IS NOT NULL GROUP BY bucket_idx;

Query #3: 15.8 ms

SELECT COUNT(*) AS count,
            quantile_disc(m.stylesheets.coverage.unused_kb, 0.10) AS p10,
            quantile_disc(m.stylesheets.coverage.unused_kb, 0.25) AS p25,
            quantile_disc(m.stylesheets.coverage.unused_kb, 0.50) AS p50,
            quantile_disc(m.stylesheets.coverage.unused_kb, 0.75) AS p75,
            quantile_disc(m.stylesheets.coverage.unused_kb, 0.90) AS p90,
            quantile_disc(m.stylesheets.coverage.unused_kb, 0.99) AS p99
            FROM sites WHERE m.stylesheets.coverage.unused_kb IS NOT NULL;

JSON file lookups (4)

                    20260625/meta.json
                    0.04 ms
                

                    20260625/types.json
                    0.52 ms
                

                    20260625/loaf-scripts.json
                    0.36 ms
                

                    20260625/menu.json
                    0.14 ms
                