Lazy loading images checker
Lazy loading images checker groups HTML images by their loading attribute. Review native lazy loading coverage while checking visible images separately.
What is Lazy loading images checker?
Lazy loading images checker examines image elements and groups them according to their loading attribute. It helps you review where a webpage declares native lazy loading and where it does not. The result is useful for a template audit, especially on pages with many images.
How to use this tool
Enter the page URL and submit the checker. Review the counts and image lists for each group. Compare the listed addresses with the visible page, then identify which images appear immediately and which normally sit farther down the document.
Understanding the results
This tool recognizes images whose loading attribute is set to lazy. It does not execute the page or test the actual moment an image downloads. A script-based loading system may therefore appear in the other group, while a declared lazy attribute does not demonstrate an observed performance improvement. Images needed immediately can also have different loading requirements from content below the initial view. Review their roles before changing all images to the same setting.
Frequently asked questions
Should every image use lazy loading?
No. Consider when the visitor needs each image. A prominent image near the start of the page may need prompt loading rather than delayed retrieval.
Does this detect CSS background images?
No. The check inspects HTML image elements in the fetched response. Background images and elements created only by scripts need additional review in a browser.
Continue your review
For a more complete picture, combine these findings with Image alt tags checker, Image format checker, and HTTP requests checker.
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