vital-scans オープンな品質台帳

www.medicare.gov: Lighthouse — 第 2026-W40 週

Google Lighthouse(独自のヘッドレス Chrome)でサンプリングされた 206 ページ。スコアは 0〜100(高いほど良い)、指標は Core Web Vitals です。 ダウンロード: CSV(ページ別スコア) · JSON(AI 対応、推奨事項を含む) · 優先ページ CSV · 優先ページ JSON.

傾向

17 週間にわたる Lighthouse カテゴリスコア
パフォーマンス アクセシビリティ ベストプラクティス SEO W24W32W401000
週別の Lighthouse カテゴリスコア
週パフォーマンスアクセシビリティベストプラクティスSEO
2026-W24371005492
2026-W25381005492
2026-W26381005492
2026-W27381005492
2026-W28381005492
2026-W29381005492
2026-W30401005492
2026-W31411005492
2026-W32441005492
2026-W33421005492
2026-W34411005492
2026-W35411005492
2026-W36411005492
2026-W37411005492
2026-W38421005492
2026-W39391005492
2026-W40431005492

History & Trends → Severity, Lighthouse and other measures across 17 weeks.

パフォーマンスへの影響

How far pages fall short of Google's "good" benchmarks: Largest Contentful Paint ≤ 2.5s and page weight ≤ 1.6 MB. Lower is better.

Avg extra LCP over 2.5s
10.6s 206/206 pages over
Avg extra weight over 1.6 MB
5.96 MB 181/181 pages over

Set page_loads_per_week for this target to also estimate total wasted time and data (the way daily-dap uses traffic counts).

サンプルページの中央値

パフォーマンス
43/100
アクセシビリティ
100/100
ベストプラクティス
54/100
SEO
92/100
エージェントによるブラウジング
100/100
Largest Contentful Paint(LCP)
16.6s
First Contentful Paint(FCP)
8.2s
Speed Index
8.6s
Total Blocking Time(合計ブロック時間)
1.0s
Cumulative Layout Shift(累積レイアウトシフト)
0

推奨事項

見出しスコアを超えて、Lighthouse が 206 件のサンプルページで指摘した問題。カテゴリ別にグループ化され、影響するページ数で順位付けされています。推定削減量(転送バイト数または読み込み時間)は、利用可能な場合は Lighthouse 自身の推定です。アクセシビリティ監査は意図的に省略されています。アクセシビリティページの axe-core の検出と重複するためです。

パフォーマンス

Lighthouse による パフォーマンス の推奨事項。影響を受けたサンプルページ順。
推奨事項ページ推定削減量
Use efficient cache lifetimes 206/206 607.9s
Reduce unused JavaScript 206/206 118.1 MB · 339.0s
Reduce JavaScript execution time 206/206 265.9s
Minimize main-thread work 206/206 265.1s
Reduce unused CSS 206/206 15.1 MB · 79.0s
First Contentful Paint 206/206 —
Largest Contentful Paint 206/206 —
Time to Interactive 206/206 —
Page prevented back/forward cache restoration 206/206 —
Render-blocking requests 205/206 472.6s
Total Blocking Time 205/206 —
Max Potential First Input Delay 205/206 —
Minify JavaScript 204/206 14.9 MB · 56.6s
Speed Index 204/206 —
Network dependency tree 204/206 —
Avoid multiple page redirects 135/206 244.9s
Document request latency 117/206 11.5s
Legacy JavaScript 103/206 23.9s
Font display 101/206 11.0s
Forced reflow 96/206 —
Initial server response time was short 54/206 8.6s
Layout shift culprits 23/206 —
Improve image delivery 7/206 1.2s
LCP breakdown 7/206 —
Duplicated JavaScript 1/206 0.3s

ベストプラクティス

Lighthouse による ベストプラクティス の推奨事項。影響を受けたサンプルページ順。
推奨事項ページ推定削減量
Uses third-party cookies 206/206 —
Missing source maps for large first-party JavaScript 206/206 —
Issues were logged in the `Issues` panel in Chrome Devtools 206/206 —
Serves images with low resolution 204/206 —
Uses deprecated APIs 199/206 —
Browser errors were logged to the console 21/206 —
Requests the geolocation permission on page load 7/206 —

SEO

Lighthouse による SEO の推奨事項。影響を受けたサンプルページ順。
推奨事項ページ推定削減量
Document does not have a meta description 84/206 —
Links are not crawlable 82/206 —
Links do not have descriptive text 4/206 —

エージェント対応(AI 対応度)

Lighthouse による エージェント対応(AI 対応度) の推奨事項。影響を受けたサンプルページ順。
推奨事項ページ推定削減量
WebMCP tools registered 206/206 —
WebMCP form coverage 206/206 —
WebMCP schemas are valid 206/206 —
llms.txt follows recommendations 206/206 —
Cumulative Layout Shift 23/206 —

エージェント対応スコアの意味

エージェント対応(AI 対応度)スコアは Google Lighthouse(13.4 以降)の新機能です。これは、人々が行政サービスを見つけて利用する方法をますます仲介するツールである AI エージェントとアシスタントにとって、ページがどれだけ機能するかを測定します。llms.txt ファイル(言語モデル向けの機械可読ガイド)、有効な構造化データ、エージェントが解析できる適切に構成されたアクセシビリティツリー、WebMCP のツール/フォームの記述などをチェックします。スコアが高いほど、AI アシスタントがそのページを理解し、市民に代わってタスクを正しく完了できる可能性が高まります。

これは実験的で進化中です。コンプライアンス要件ではなく、将来を見据えたシグナルとして扱ってください。 サンプルページの中央値: 100/100.

サンプルページで見つかった不足: WebMCP tools registered (206), WebMCP form coverage (206), WebMCP schemas are valid (206), llms.txt follows recommendations (206), Cumulative Layout Shift (23).

ページ別の結果

サンプルページごとの Lighthouse スコアと Core Web Vitals(2026-W40)。エージェント対応 = 実験的なエージェントブラウジングスコア。PWA / オフライン対応は標準タブで追跡されます(Lighthouse 12 以降は PWA カテゴリが削除されました)。 — 列見出しをクリックして並べ替え
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