Core Web Vitals & page speed
Core Web Vitals measure real-world loading, interactivity and visual stability (LCP, INP, CLS). They're a ranking factor and matter most on Nepal's mobile networks. Learn what they mean and how to improve them.
Core Web Vitals are Google's user-experience metrics for how fast and stable a page feels to real visitors. Good scores help rankings and, more importantly, keep mobile users from bouncing.
The three metrics
Google measures three things:
- LCP (Largest Contentful Paint) — how quickly the main content loads (aim under 2.5s)
- INP (Interaction to Next Paint) — how quickly the page responds to taps/clicks (aim under 200ms)
- CLS (Cumulative Layout Shift) — how much the layout jumps as it loads (aim under 0.1)
Improve LCP
Optimise and properly size images, use modern formats, preload the main image/font, reduce server response time, and avoid render-blocking resources.
Improve INP
Reduce and split heavy JavaScript, defer non-essential scripts, and keep the main thread free so taps respond immediately — critical on lower-end phones common in Nepal.
Improve CLS
Always set width/height (or aspect-ratio) on images and embeds, reserve space for ads/widgets, and avoid inserting content above what the user is reading.
Measure it
Use PageSpeed Insights and the Core Web Vitals report in Search Console (field data from real users) to find and track issues, especially on mobile.
Key takeaways
- ✓Core Web Vitals = LCP (load), INP (responsiveness), CLS (stability).
- ✓They're a ranking factor and decisive on slow mobile networks.
- ✓Optimise images/fonts (LCP), trim JS (INP), reserve space (CLS).
- ✓Measure with PageSpeed Insights and Search Console field data.
Core Web Vitals & Page Speed — FAQ
Are Core Web Vitals a Google ranking factor?+
Yes — they're part of Google's page-experience signals. They rarely outweigh great content, but among similar pages they can be a tiebreaker, and they strongly affect bounce and conversions.
What replaced FID?+
Interaction to Next Paint (INP) replaced First Input Delay (FID) as a Core Web Vital in 2024; it measures overall responsiveness, not just the first interaction.
Related guides
Sources & data note
These guides explain widely-accepted SEO, AEO and GEO practice as documented by Google Search Central, schema.org and current industry research. Search and AI systems evolve continually — treat specific thresholds (e.g. Core Web Vitals targets) as current guidance and verify against the latest official documentation. Examples are tailored to Nepal's market.