What DebugBear Free Website Speed Test measures
The free test runs your page in Chrome and reports Core Web Vitals along with a request waterfall and a rendering timeline. It breaks Largest Contentful Paint into its parts, so you can see how much of the delay was the server, how much was the browser finding the image and how much was downloading it.
How to read your result
The Largest Contentful Paint breakdown is the reason to use this tool. If most of the time sits in the load delay bucket, the browser did not know about your main image early enough, which is a code problem you can fix. If most of it sits in the resource load bucket, the image itself is too big.
What to change first
When load delay dominates, add a preload link for your hero image and take lazy loading off it. That alone often removes a second from the measurement.
Common questions
- Is the DebugBear test free?
- The single page test is free and needs no account. Continuous monitoring over time is the paid product.
- What is LCP load delay?
- The gap between the page starting to load and the browser beginning to download your largest image. A long delay usually means the image is hidden behind JavaScript or marked as lazy.
Related tests
Run this alongside every other test in Website Speed Tests, or start from the full list of website testing tools.