13 Ways to Improve Core Web Vitals
Page Experience is a critical ranking factor for Google. Learn the specific technical steps to fix LCP, FID, and CLS errors to boost your SEO rankings and user satisfaction.
Understanding Core Web Vitals
Before optimizing, you must understand the three specific signals Google measures.
Largest Contentful Paint - LCP(Loading Time)
Largest Contentful Paint. This measures loading performance. We've all seen this where the site just shows a white page...which seems like forever! and then bam! it loads. Ideal LCP is 2.5 seconds or faster.
FID (Interactivity)
First Input Delay. This measures interactivity. It tracks the time from when a user first interacts with a page (like clicking a link) to the time the browser is able to respond. You know that times you click a link and nothing happens...Frustrating right? Well that's FID!
CLS (Stability)
Cumulative Layout Shift. This measures visual stability. It quantifies how much unexpected movement of page content occurs. You start reading a page and some image or HTML gets loaded late and it shifts the whole reading experience. A score of less than 0.1 is ideal.
Optimization Checklist
Use this table to identify which metrics are impacted by specific technical fixes. "Easy" tasks can often be done via plugins, while "Advanced" tasks may require developer support.
| Optimization Action | Difficulty | Impacts |
|---|---|---|
| Understand Metrics | Easy | All |
| Audit Tools | Easy | All |
| Optimize Images | Easy | LCP |
| Lazy Load Images | Advanced | LCP |
| Use a CDN | Easy | LCP |
| Increase Server Size | Advanced | LCP, FID |
| Responsive Images | Advanced | LCP |
| Fix Render-Blocking | Advanced | LCP, FID |
| Remove Unused CSS/JS | Advanced | LCP, FID |
| Compress Server Resources | Advanced | LCP |
| Minify CSS & JS | Advanced | LCP |
| Add Size Attributes | Advanced | CLS |
| Keep Page Size Small | Advanced | LCP |
| Optimize Web Fonts | Easy | LCP, CLS |
| Preload Critical Assets | Advanced | LCP |
15 Tips to Fix Core Web Vitals
Understand the Metrics
Before acting, know what you are fixing. LCP is load speed, FID is responsiveness, and CLS is visual stability. Different fixes apply to different metrics.
Use Audit Tools
Do not guess. Use Google PageSpeed Insights, Chrome DevTools, or Search Console to identify exactly which elements are failing.
Optimize Images
Compress all images and use modern formats like WebP. This is often the easiest way to improve LCP scores immediately.
Lazy Load Images
Load images only when the user scrolls to them. However, ensure you do not lazy load the very first image (LCP element) at the top of the page.
Use a CDN
A Content Delivery Network stores your files on servers worldwide. This brings content closer to your users physically, drastically reducing load times.
Upgrade Server Hosting
A slow server response time (TTFB) hurts LCP. If your hosting is cheap or shared, upgrading to a premium plan is often necessary.
Responsive Images
Serve different image sizes for desktop and mobile. Do not force a mobile phone to download a massive desktop-sized banner.
Eliminate Render-Blocking
Defer or async JavaScript and CSS files that are not critical for the initial page load. This allows the visible content to appear faster.
Remove Unused CSS/JS
Code that is never used still takes time to read. Use Chrome DevTools Coverage tab to find and remove "dead code."
Compress Server Resources
Ensure your server uses GZIP or Brotli compression for text files. This significantly reduces the file size sent over the network.
Minify CSS & JS
Minification removes whitespace and comments from code files. This makes them lighter and faster to parse for the browser.
Add Size Attributes
Always add width and height attributes to images and videos. This reserves space in the browser and prevents layout shifts (CLS).
Keep Pages Small
Keep your total page size under 500KB and limit requests to fewer than 50 per page. Smaller pages always load faster.
Optimize Web Fonts
Fonts often cause layout shifts when they load late. Use "font-display: swap" in your CSS to ensure text remains visible during loading.
Preload Critical Assets
Tell the browser to prioritize the "Hero" image above all else. Adding a preload link in the header ensures your largest element loads instantly.
Let us handle your Core Web Vitals.
Optimizing for LCP, FID, and CLS can be technical. Our Platinum Plan includes proactive speed enhancements and code audits.