Core web vitals optimization analyzes a website's user experience. These signals assess how quickly consumers can engage with your website and what they'll see. These signals assess webpage usability.

Run a fast website performance analysis test to evaluate how well your site runs. Google Search Console, Page Speed Insights, and GTmetrix can help.

Compare findings from different performance reports to improve your page.

 

Poor FID implies your page interacts with users for more than 300 milliseconds. Optimize JS execution. This reduces the time between JS execution and page load.

Memory use must be minimized.  Google suggests postponing unnecessary JS to decrease execution.

To check for unused JavaScript:

• Right-click your webpage and pick 'Inspect'
• Click 'Sources' and search for three dots. Coverage should be added. Press load after adding.
• When the website loads, you'll see how little JavaScript is utilized.

When you find unneeded JS, trim it down. Code splitting can help. This involves separating a JavaScript bundle (combined files to minimize too many HTTP requests to load a website) into smaller bits.

 

Lazy loading photos on your site protects your UX and web vitals score. Lazy loading loads pictures when visitors scroll down the page, preserving your website's loading speed and LCP score.

Lazy loading improves site speed.

It limits bandwidth utilization, improves SEO, and reduces bounce rate.

Is your site sluggish loading? HubSpot says sites with many graphics, animations, or videos (heavy components) should use slow loading. No rules dictate which pages should use lazy loading. If your site's LCP score is low, try lazy loading and compare before and after results.

 

Do you agree? Images dominate many web pages. Optimizing them may make your page lighter, increasing the loading time, LCP score, UX, and search engine ranks.

Tiny jpg can minimize page size and improve LCP results. You may assume picture compression reduces quality or resolution. You can only tell if you zoom in or save the image in the wrong format. Always use landscape jpg and graphics png. You can also utilize JPEG 2000, JPEG XR, or WebP, although research is recommended.

Enable Content Delivery Network (CDN) for images after compressing. CDN saves your material on global servers. Since servers are spread out, the server nearest to users serves pictures faster.

 

Over 0.1 is a bad CLS score, mainly caused by graphics, advertising, or embeds without dimensions in the CSS file. Dimensions are important for CLS. Setting width and height helps the browser allot page space while the element loads.

If an image's proportions are incorrect, it shows later on a page. A user's content might abruptly drop because a picture without suitable dimensions couldn't load fast enough. The browser didn't know how much space the image needed.

To avoid this picture shift, reserve a spot sooner. This prevents off-screen layout shifts.

Ensure embeds, such as YouTube videos, have suitable proportions. The video may seem OK from the back end but screwed up on the front. If so, alter the dimensions.

 

Google explains, "The longer a browser takes to receive server material, the longer it takes to render anything on the screen." Faster server response time increases all page-load metrics, including LCP.

Long server response time hurts SEO and UX.

Time to First Byte (TTFB) measures the time a user's browser receives the first byte of your page's content.

Before you begin, acquire statistics about your server's current performance. After you finish the report, try these:

• Check your website's speed.
• Use CDN.
• Check plugins. Why? Each plugin adds weight to your page, which affects site speed. Leave just essentials.