Web Vitalsチェッカー
ウェブサイトのCore Web Vitalsを測定します。LCP、FID、CLSなどのパフォーマンス指標をチェックします。
Web Vitalsチェッカー
ウェブサイトのCore Web Vitalsパフォーマンス指標を測定
LCP (Largest Contentful Paint)
FID (First Input Delay)
CLS (Cumulative Layout Shift)
FCP (First Contentful Paint)
TTFB (Time to First Byte)
機能紹介
The Web Vitals Checker tool measures Core Web Vitals metrics like LCP, FID, and CLS for your pages. It helps you understand real‑world performance and prioritize optimizations.
このツールを使うタイミング
Use this tool whenever you optimize page speed or UX: after design changes, before launches, or when investigating slow user experiences.
使い方
Open the target page in the tool
Load or reference the page you want to test so the tool can measure its performance metrics.
Collect Web Vitals metrics
Observe key values such as Largest Contentful Paint, First Input Delay, and Cumulative Layout Shift.
Interpret the results
Compare metrics against recommended thresholds to decide whether your page needs optimization.
使用例
Validating a new homepage design
Measure Web Vitals after redesigning your homepage to ensure animations and images do not hurt performance.