Question 1

What is a PageSpeed score and why does it matter?

Accepted Answer

Google PageSpeed score (0–100) measures how well-optimized your website is for speed and user experience. Scores above 90 are considered Good. A low score directly impacts your Google search rankings, ad Quality Score, and the percentage of visitors who stay on your site.

Question 2

What are Core Web Vitals?

Accepted Answer

Core Web Vitals are three user experience metrics Google uses as ranking signals: LCP (Largest Contentful Paint) measures loading speed, CLS (Cumulative Layout Shift) measures visual stability, and INP (Interaction to Next Paint) measures responsiveness. All three have Good, Needs Improvement, and Poor thresholds published by Google.

Question 3

What is the difference between lab data and field data?

Accepted Answer

Lab data comes from a simulated Lighthouse test run in a controlled environment. Field data (Chrome User Experience Report / CrUX) is aggregated from real users visiting your site. Field data is what Google actually uses for ranking; lab data is useful for diagnosing specific issues.

Question 4

Is a low Performance score the same as a low SEO score?

Accepted Answer

No — these are separate scores. The Performance score measures load speed and interactivity. The SEO score checks for basic on-page SEO signals like meta tags, crawlability, and mobile-friendliness. A site can have great performance but weak SEO, or vice versa. Both affect your visibility in search.

Question 5

How often should I run a website audit?

Accepted Answer

Run a full audit after any significant code deployment, new content launch, or plugin/theme update. As a baseline, auditing monthly is a good habit. Scores can drift as third-party scripts load, images are added, or your CMS accumulates rendering overhead.

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Google PageSpeed Scores

Core Web Vitals

Prioritized Fixes