Readiness check · Accelerate lane · weight 4
Offscreen images lazy-loaded
On a homepage with at least six images, at least one uses loading="lazy".
- Observed on
- 62%
- Top 1K sites
- 63%
- Top 1M band
- 61%
- Not measured
- 17,833
of 22,262 measured sites
200 measured
3,832 measured
blocked, challenged or not applicable
Why it matters
Images below the fold are only downloaded when the visitor scrolls near them, which frees bandwidth for what is visible first.
How to fix it
Add loading="lazy" to images below the fold. Do not lazy-load the main hero image, because that delays the largest visible element.
How we check
On a homepage with at least six images, at least one uses loading="lazy".
Observed: Native lazy loading in use.
Not observed: No native lazy loading found.
Limit: Based on the homepage HTML delivered to an automated client; scripts that run later were not executed.
Stack-specific steps
- WordPress: WordPress has added loading="lazy" to images by default since 5.5; check that your theme or a plugin has not removed it.
By popularity band
| Chrome UX Report band | Observed | Measured |
|---|---|---|
| Top 1K | 63% | 200 |
| Top 5K | 65% | 976 |
| Top 10K | 62% | 1,271 |
| Top 50K | 61% | 9,745 |
| Top 100K | 63% | 3,051 |
| Top 500K | 63% | 3,187 |
| Top 1M | 61% | 3,832 |
Categories most likely to do this
Categories least likely
By stack
- Next.js on Vercel97%
- Webflow96%
- Astro94%
- Shopify93%
- Next.js on Amazon CloudFront91%
- Next.js on Google edge91%
- Next.js90%
- Next.js on Cloudflare88%
- Next.js on Akamai87%
- Drupal on Cloudflare85%
- Angular81%
- Next.js on Fastly81%
- Magento / Adobe Commerce81%
- Nuxt on Amazon CloudFront81%
- Nuxt75%
- Nuxt on Cloudflare74%
- Drupal74%
- PrestaShop74%
- WordPress on Amazon CloudFront70%
- WordPress69%
- WordPress on Cloudflare68%
- Adobe Experience Manager on Amazon CloudFront65%
- Adobe Experience Manager62%
- Sitecore51%
- Blogger43%
By provider
- Vercel96%
- Fastly74%
- Azure Front Door/CDN71%
- Cloudflare70%
- Amazon CloudFront70%
- Akamai68%
- Google edge66%
- Imperva52%