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Performance Checker

See Core Web Vitals and performance bottlenecks at a glance.

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WEPLET LAB

Measure a public page

Uses Lighthouse data from Google PageSpeed Insights. The URL is sent to Google for measurement.

PUBLIC TOOL · PAGESPEED DATA

What does this tool solve?

A URL-based performance diagnostic that reads Core Web Vitals and loading bottlenecks, then prioritizes causes instead of stopping at a score.

Review mobile or desktop Lighthouse diagnostics with performance, accessibility, SEO scores, and key metrics in one report.

01

Key capabilities

Core Web Vitals summary

Distinguish LCP, INP, and CLS status and measurement scope at a glance.

Bottleneck classification

Separate server response, discovery, transfer, and render delay.

Prioritized actions

Recommend next steps by impact and implementation effort.

02

Workflow

  1. 1

    Enter a public URL

    Enter a representative page or template URL.

  2. 2

    Separate field and lab signals

    Read user distributions separately from reproducible diagnostics.

  3. 3

    Measure again after changes

    Compare before and after under the same conditions.