article thumbnail

Solving CLS Issues In A Next.js-Powered E-Commerce Website (Case Study)

Smashing Magazine

Powered E-Commerce Website (Case Study). Powered E-Commerce Website (Case Study). For this case study, we are mainly going to focus on CLS. We use Lighthouse and WebPagetest as our synthetic testing tools for performance to measure CLS. Solving CLS Issues In A Next.js-Powered Arijit Mondal.

Website 120
article thumbnail

The State Of Mobile And Why Mobile Web Testing Matters

Smashing Magazine

While it might sound valuable to test on mobile devices, it might not be convincing enough to drive the management and entire organization towards mobile testing. However, there are quite a few high-profile case studies exploring the impact of mobile optimization on key business metrics. Mobile Web Testing.

Mobile 142
Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

article thumbnail

What Web Designers Can Do To Speed Up Mobile Websites

Smashing Magazine

One tool that’s particularly helpful is called Lighthouse. Instead, I suggest that web designers use another Google testing tool called Test My Site. Test My Site is a mobile page speed testing tool from Think with Google. Source: Test My Site ) ( Large preview ). The Downtime Monkey Example.

Website 111
article thumbnail

Performance Game Changer: Browser Back/Forward Cache

Smashing Magazine

WebPageTest is one of the few web performance testing tools that actually tests a reload of the page using a primed HTTP Cache — most of the other tools just flag if your HTTP resources are not explicitly set to be cached. Back/Forward Cache Testing Tool. Large preview ). Large preview ).

Cache 106
article thumbnail

Google PageSpeed Insights - Scoring 100/100 with WordPress

KeyCDN

Fonts are render-blocking as we discussed in our case study on web font performance. The PageSpeed Insights team also launched a website speed test tool on “ think with Google ” that you might want to check out.

Google 103
article thumbnail

Modern Methods For Improving Drupal’s Largest Contentful Paint Core Web Vital

Smashing Magazine

Web developers should learn to use various testing tools such as Lighthouse and WebPageTest. Wrapping Up In this article, we identified, measured, and fixed a very common performance issue, not only in Drupal but in everyday front-end work. We should learn common metrics , such as Time to First Byte, LCP, and other web vitals.

Media 77
article thumbnail

Image CDN - Speed Up the Delivery of Your Most Important Asset

KeyCDN

This means we need to always be testing for different devices and connections. Take advantage of free website speed test tools , many of which have options to test on mobile. You can use our Brotli Test tool to see whether or not your server supports Brotli. webp Total: 87ms: jpg-to-webp-2v2.webp

Speed 52