Check Google Core Web Vitals (LCP, CLS, INP) for any URL using Chrome UX Report data.
Web Vitals チェッカー is a free online seo & website tool.
Your input is processed on secure servers over an encrypted HTTPS connection and nothing is stored. No software to install; works on both phone and desktop.
We noticed most online tools upload your files to remote servers. Since privacy is our core principle, we built this tool to process everything locally in your browser.
はい、完全無料で登録不要です。
はい、モバイルブラウザでタッチ操作に対応しています。
SEO & Website
Web Vitals チェッカー sends your input over an encrypted HTTPS connection to our servers to complete the processing. Nothing you submit is stored; results are only displayed in your current page.
Privacy & Security: All processing happens locally in your browser. Files are never uploaded or stored.
Privacy: All processing happens locally in your browser. Your files and data never leave your device — no upload, no server, no tracking.