Comparisons
PageSpeed Insights vs Lighthouse vs CrUX
A practical DomainLens guide to PageSpeed Insights vs Lighthouse vs CrUX, focused on field data, lab data, URL coverage, decision making.
Run a fresh DomainLens audit and use the report as your priority list.
Overview
PageSpeed Insights vs Lighthouse vs CrUX is useful when you need a clear way to separate cosmetic SEO work from issues that can block crawling, indexing, rankings, or search snippets. Start with evidence, then decide what deserves engineering time.
Use an automated audit to collect the baseline, then review the page manually for context, search intent, and business priority.
Why it matters
The most common problems usually sit around field data, lab data, URL coverage, decision making. These signals influence how easily search engines discover pages, understand content, and trust the final URL they should rank.
A good SEO workflow turns these checks into a short fix list with owner, impact, effort, and validation steps.
What to check
- Review field data and record the current state, expected state, and exact URL affected.
- Review lab data and record the current state, expected state, and exact URL affected.
- Review URL coverage and record the current state, expected state, and exact URL affected.
- Review decision making and record the current state, expected state, and exact URL affected.
Common mistakes
- Fixing field data without validating the rendered page, canonical target, and indexability after deployment.
- Fixing lab data without validating the rendered page, canonical target, and indexability after deployment.
- Fixing URL coverage without validating the rendered page, canonical target, and indexability after deployment.
- Fixing decision making without validating the rendered page, canonical target, and indexability after deployment.
Next step
Run a fresh DomainLens audit, compare the report with this guide, and prioritize fixes that affect indexability, snippets, internal linking, or Core Web Vitals first.