Lazy Loading Checker
Counts images with and without loading="lazy".
Reading the result
Lazy load below-the-fold images, not the main hero image.
Limitations
Reads one page as raw HTML, so anything added by JavaScript is not seen.
Example
Enter example.co.uk and run the check. The report opens when the check finishes.
Questions
What does the Lazy Loading Checker do?
Counts images with and without loading="lazy".
How should I read the result?
Lazy load below-the-fold images, not the main hero image.
What can it not tell me?
Reads one page as raw HTML, so anything added by JavaScript is not seen.