Understanding Core Web Vitals

A smooth and delightful online experience is crucial for keeping your visitors engaged. Core Web Vitals, introduced by Google, are pivotal metrics that shed light on your website’s performance from the user's perspective. WebVitality is here to help optimize your Shopify store's performance by diving deep into these essential metrics. Let’s explore each one:

Largest Contentful Paint (LCP)

LCP gauges the loading performance by measuring the time it takes for the largest content element (like an image or text block) to appear on the screen. A lower LCP time reassures the user that the page is loading effectively.

• Good Score: Below 2.5 seconds
• Optimization Tips:
  • Optimize image sizes and formats
  • Utilize the preload attribute for crucial assets
  • Establish efficient caching policies
  • Learn more

Cumulative Layout Shift (CLS)

CLS quantifies the visual stability by tracking unexpected layout shifts. Lower CLS scores indicate a more stable layout, enhancing the user experience.

• Good Score: 0.1 or less
• Optimization Tips:
  • Specify dimensions for media elements
  • Avoid inserting new content above existing content
  • Use high-performance CSS animations
  • Learn more

First Input Delay (FID)

FID captures the responsiveness by measuring the time between a user’s first interaction and the browser’s response. Lower FID scores ensure a more interactive page.

• Good Score: Below 100 milliseconds
• Optimization Tips:
  • Minimize or defer JavaScript execution
  • Use Web Workers to run JavaScript off the browser's main thread
  • Learn more

Interaction to Next Paint (INP)

Set to replace FID in March 2024, INP assesses the latency of all interactions on a page, offering a broader understanding of the page's responsiveness.

• Good Score: Below 200 milliseconds
• Optimization Tips:
  • Identify and reduce input delay
  • Optimize event callbacks
  • Avoid rendering HTML using JavaScript
  • Learn more

First Contentful Paint (FCP)

FCP measures the time until the first piece of content is rendered, providing an initial visual feedback to the user about the page loading status.

• Good Score: Below 1.8 seconds
• Optimization Tips:
  • Prioritize visible content
  • Reduce server response times
  • Utilize browser caching
  • Learn more

Time to First Byte (TTFB)

TTFB reflects the efficiency of the server and the network in handling a user’s request by measuring the time until the first byte of response is received.

• Good Score: Below 0.8 seconds
• Optimization Tips:
  • Optimize server configurations
  • Consider using a Content Delivery Network (CDN)
  • Improve server-side rendering
  • Learn more

WebVitality is committed to empowering you with insights and solutions to enhance your Shopify store’s performance, ensuring a superior user experience. Embrace the power of Core Web Vitals and let WebVitality guide you on the path to excellence.