ILIndexLane Send the issue

Free WordPress diagnostic plugin

IndexLane Core Web Vitals Asset Snapshot

Take a quick, on-demand snapshot of the CSS, JavaScript, WordPress plugin/theme asset paths, and external asset domains present in selected page HTML before deciding what deserves deeper performance testing.

Version 0.1.0 · GPLv2 or later · Tagged source and ZIP release

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Checks and output

What it does

  • Fetches selected same-site URLs from a WordPress admin screen
  • Lists CSS and JavaScript files found in the returned HTML
  • Counts scripts and styles
  • Identifies WordPress plugin and theme asset paths
  • Lists external asset domains
  • Flags obvious heavy third-party scripts for review
  • Exports a CSV report for the current run

Deliberate boundary

What it does not do

  • Calculate a Core Web Vitals score
  • Run Lighthouse or PageSpeed Insights
  • Infer ranking or conversion impact
  • Generate critical CSS, compress images, or change site content
  • Replace browser traces, field data, server logs, or a full crawl

The snapshot reports assets visible in returned page HTML. It is a triage aid, not proof that an individual asset caused an LCP, INP, CLS, or field-CWV failure.

Related implementation

Continue from inventory to repair

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