The page speed checker runs Google PageSpeed for both mobile and desktop and shows the Core Web Vitals and the top things to fix.
Fast pages keep visitors and help rankings, especially on mobile.
How to use it
- Paste the URL of your page.
- Press the orange button and wait up to a minute.
- Read the scores and start with the first item under Fix first.
Core Web Vitals in plain words
- LCP: how fast the main content shows. Aim for under 2.5 seconds.
- CLS: how much the layout jumps. Aim for under 0.1.
- TBT: how long the page is busy and cannot react to taps.
Tip
Big images and too many plugins are the most common problems. Compress images, use a caching plugin and remove scripts you do not need.
Questions
Why is mobile lower than desktop?
Google tests mobile with a slower phone and network, so scores are always lower.
Will a 100 score rank me first?
No, but slow pages lose visitors and can rank lower.
Why did the test fail?
Google could not load the page, or the daily limit was reached. Try again later.