WP Assistant
By Atiba

How to improve WordPress Core Web Vitals scores

This Q&A covers Core Web Vitals on a WordPress site and explains the impact of LCP, FID and CLS on user experience. You will find clear steps for image compression, caching rules and code minification using popular plugins. It wraps up with steps on dimension settings and CDN setup to stop layout shifts.

What is core web vitals?

Core Web Vitals are specific metrics Google uses to measure user experience on a website. They evaluate aspects like loading performance, interactivity, and visual stability. On WordPress, optimizing for Core Web Vitals can help your site deliver a better user experience and may boost search rankings.

Core Web Vitals

  • Largest Contentful Paint (LCP): time for the largest visible element to load; aim for 2.5 seconds or less.
  • First Input Delay (FID): delay between a user’s first interaction and browser response; 100 ms or less is good.
  • Cumulative Layout Shift (CLS): measures unexpected layout movement; target a score of 0.1 or less.

How do I improve Core Web Vitals scores on a WordPress site?

Boosting your Core Web Vitals involves refining various parts of your WordPress site.

Largest Contentful Paint (LCP)

  • Image optimization: compress images and set proper dimensions. Plugins like Smush or Imagify can help.
  • Browser caching: store static assets on users’ devices to cut load times. Use WP Rocket or hosting tools.
  • Minify CSS and JavaScript: shrink file size by removing extra characters. Autoptimize can handle this.
  • Lightweight theme: pick a fast-loading theme.

First Input Delay (FID)

  • JS minification and deferment: cut down on scripts parsed at load time and delay execution until after rendering. Autoptimize or WP Rocket can set this up.
  • Trim slow third-party scripts: find and remove or speed up elements like ads or widgets.
  • Content Delivery Network (CDN): serve assets from servers close to your users. Cloudflare or StackPath work well.

Cumulative Layout Shift (CLS)

  • Set image and video dimensions: declare width and height so the layout won’t jump as they load.
  • Allocate space for ads: reserve slots so ads won’t push content down when they appear.
  • Avoid inserting above: add new elements below existing content to stop unexpected shifts.

Need human WordPress help?

WP Assistant is a free tool created by Atiba Software, a WordPress design and development company located in Nashville, TN. If you need more personalized WordPress assistance let us know, and we’ll get back to you ASAP!

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