Core Web Vitals Analyzer

Monitor LCP, INP, CLS, and FID metrics directly on the page.

Inspect

Core Web Vitals Analyzer Overview

Use Core Web Vitals Analyzer when your workflow depends on lcp, cls, and inp and fast browser execution.

Monitor LCP, INP, CLS, and FID metrics directly on the page. It works best when you want diagnostic values you can reuse during QA or development.

Typical input includes live page elements, markup, and style signals, while the output is optimized for teams handling lcp, cls, and inp.

Primary Use Cases

• Use Core Web Vitals Analyzer to speed up lcp checks without switching tabs or external apps.
• Apply Core Web Vitals Analyzer in QA and support workflows when consistent cls output is required.
• Choose Core Web Vitals Analyzer for repeatable operations where inp accuracy matters before handoff.
• Core Web Vitals Analyzer is a strong fit when your team needs to audit and verify on-page implementation details.

How to Use Core Web Vitals Analyzer

1. Open Toolboard from your Chrome toolbar and choose Core Web Vitals Analyzer.
2. Prepare your source input and use Core Web Vitals Analyzer to inspect target elements or metadata.
3. Validate the result, then continue with related Toolboard tools if your workflow needs additional steps.

Input and Output Profile

• Category: Inspect
• Tags: inspect, performance, web vitals
• Keywords: lcp, cls, inp, fid, core web vitals
• Module: inspect/coreWebVitalsAnalyzer.js

Permissions and Privacy

Permissions used by Core Web Vitals Analyzer: activeTab. These permissions are scoped to tool execution and follow Toolboard's privacy-first model.

Related Tools in Inspect

• Accessibility Quick Audit - Detect common accessibility issues on the current page quickly.
• Security Headers Checker - Inspect key HTTP security headers for the active page.
• Color Picker - Click elements to get colors
• Element Picker - Inspect HTML and CSS structure

FAQ

What does Core Web Vitals Analyzer do in Toolboard?

Core Web Vitals Analyzer is designed to audit and verify on-page implementation details. Monitor LCP, INP, CLS, and FID metrics directly on the page. It belongs to the Inspect category in Toolboard.

When should I use Core Web Vitals Analyzer instead of another tool?

Use Core Web Vitals Analyzer when your primary task is lcp. For broader workflows, combine it with related Toolboard tools listed on this page.

Does Core Web Vitals Analyzer store my data?

Core Web Vitals Analyzer follows Toolboard's local-first behavior. Permissions used by Core Web Vitals Analyzer: activeTab. These permissions are scoped to tool execution and follow Toolboard's privacy-first model.

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