Images
Lazy loading
Below-the-fold images use loading="lazy"
What we check
Below-the-fold images use loading="lazy"
Why it matters
Loading off-screen images upfront slows the part people can see.
How to fix it
Add loading="lazy" to images below the fold.
How it affects your score
This check sits in Images, which is worth 10% of the overall score. A critical result costs the full weight of the check; a warning costs half. If we can't measure it on your page, we leave it out of the score entirely.