Third-party request share and the Core Web Vitals

Sites with under 10% third-party requests third-party request share have a good INP most often: 99%, against 99% of all sites. Sites with over 50% third-party requests third-party share have it least often, at 98%.

Sites with over 50% third-party requests third-party request share have a good LCP most often: 88%, against 86% of all sites. Sites with under 10% third-party requests third-party share have it least often, at 86%.

Under 10% third-party requests is the most used: 39.6% of sites.

Joomla sets the third-party request share to under 10% third-party requests on 70% of its sites, and 100% of Joomla sites have a good INP, against 99% of all sites. Wix sets the third-party request share to 25% to 50% third-party requests on 85% of its sites, and 100% of Wix sites have a good INP.

Joomla sets the third-party request share to under 10% third-party requests on 70% of its sites, and 93% of Joomla sites have a good LCP, against 86% of all sites. Wix sets the third-party request share to 25% to 50% third-party requests on 85% of its sites, and 92% of Wix sites have a good LCP.

PlatformThird-party request share on its sitesGood INP

All sites 210,902 sitesUnder 10% third-party requests 40%10% to 25% third-party requests 27%25% to 50% third-party requests 18%Over 50% third-party requests 16%99%

Adobe Commerce 1,095 sitesUnder 10% third-party requests 57%10% to 25% third-party requests 25%25% to 50% third-party requests 12%100%

Wix 5,825 sites25% to 50% third-party requests 85%Over 50% third-party requests 10%100%

Squarespace 2,258 sitesOver 50% third-party requests 70%25% to 50% third-party requests 29%100%

Joomla 2,551 sitesUnder 10% third-party requests 70%10% to 25% third-party requests 25%100%

Drupal 3,296 sitesUnder 10% third-party requests 39%10% to 25% third-party requests 39%25% to 50% third-party requests 17%100%

WordPress 65,509 sitesUnder 10% third-party requests 51%10% to 25% third-party requests 34%25% to 50% third-party requests 12%100%

Shopify 8,573 sitesUnder 10% third-party requests 53%10% to 25% third-party requests 43%99%

Under 10% third-party requests 10% to 25% third-party requests 25% to 50% third-party requests Over 50% third-party requests

Does the platform explain the third-party request share difference?

On WordPress, 100% of sites with under 10% third-party requests third-party request share have a good INP, against 100% of WordPress sites with 10% to 25% third-party requests. Within WordPress, sites with under 10% third-party requests and 10% to 25% third-party requests have a good INP about equally often. On Shopify, 100% of sites with under 10% third-party requests third-party request share have a good INP, against 99% of Shopify sites with 10% to 25% third-party requests. Within Shopify, sites with under 10% third-party requests and 10% to 25% third-party requests have a good INP about equally often.

On WordPress, 75% of sites with over 50% third-party requests third-party request share have a good LCP, against 75% of WordPress sites with under 10% third-party requests. Within WordPress, sites with over 50% third-party requests and under 10% third-party requests have a good LCP about equally often. On Shopify, 99% of sites with under 10% third-party requests third-party request share have a good LCP, against 96% of Shopify sites with 10% to 25% third-party requests. Within Shopify, sites with under 10% third-party requests have a good LCP more often.

How external request share shapes main-thread contention and INP

Third-party request share measures the fraction of page requests served from external origins. Across 83,462 sites (39.6%) keeping third-party traffic under 10% and 56,530 sites (26.8%) between 10% and 25%, good INP reaches 99% and 99% (45ms and 51ms median). When third parties account for 25% to 50% of requests (17.6%), good INP drops to 99% (54ms median), while the 16.1% over 50% sit at 98% good INP (53ms median).