Trisul's Blog

In 2025, Core Web Vitals are more important than ever for SEO, user experience, and conversion rates. Google uses these metrics to rank your site, and users expect fast, smooth web experiences. This guide covers what Core Web Vitals are and practical steps to improve them.

What Are Core Web Vitals?

• LCP (Largest Contentful Paint): Measures loading performance. Aim for <2.5s.
• FID (First Input Delay): Measures interactivity. Aim for <100ms.
• CLS (Cumulative Layout Shift): Measures visual stability. Aim for <0.1.

How to Measure Core Web Vitals

• Google PageSpeed Insights
• web.dev/measure
• Chrome DevTools (Lighthouse tab)
• Search Console → Core Web Vitals report

Practical Steps to Improve Core Web Vitals

1. Optimize Images

• Compress images before uploading (use WebP or AVIF formats)
• Use <img loading="lazy"> for lazy loading
• Serve appropriately sized images for different devices

2. Minimize and Defer JavaScript

• Minify JS files
• Defer non-critical scripts with defer or async
• Avoid large JS bundles—split code if possible

3. Use Efficient Fonts

• Limit the number of font families and weights
• Use font-display: swap in your CSS

4. Reduce Layout Shifts (CLS)

• Always set width and height on images and embeds
• Avoid inserting content above existing content (e.g., banners, ads)

5. Enable Caching and Use a CDN

• Set cache headers for static assets
• Use a Content Delivery Network for global speed

Bonus: Server-Side Optimizations

• Use HTTP/2 or HTTP/3
• Enable Gzip or Brotli compression
• Optimize server response times (TTFB)

Conclusion

Improving Core Web Vitals is a win-win for users and search engines. Regularly test your site, fix the biggest issues first, and focus on fast, stable, and interactive experiences. Even small improvements can make a big difference for your SEO and your visitors.

Questions or want a Core Web Vitals audit? Contact me!