Performance Metrics
Instructions: This page is designed to test various performance metrics.
- Resource Loading: Use browser dev tools or your automation script to measure the load time of the large image and the slow script on this page.
- Layout Shift (CLS): An ad-like banner will appear at the top after 3 seconds, pushing the content down. Your tool should be able to measure this layout shift.
- Lighthouse: Run a Lighthouse audit against this page to collect a full range of performance, accessibility, and SEO metrics.
This banner loaded late, causing a layout shift!
Content
This is the main content of the page. It will be pushed down when the banner above loads.
Large Image Resource
This is a large image (2000x1500) that will take some time to load.
