Synthetic interaction sub-parts and the Core Web Vitals

Sites with under 35ms lab interaction duration synthetic interaction sub-parts have a good INP most often: 96%, against 95% of all sites. Sites with over 110ms lab interaction duration lab interaction time have it least often, at 95%.

Under 35ms lab interaction duration is the most used: 30.6% of sites.

Wix sets the synthetic interaction sub-parts to under 35ms lab interaction duration on 50% of its sites, and 97% of Wix sites have a good INP, against 95% of all sites. Squarespace sets the synthetic interaction sub-parts to over 110ms lab interaction duration on 53% of its sites, and 99% of Squarespace sites have a good INP.

PlatformSynthetic interaction sub-parts on its sitesGood INP

Sites with synthetic interaction sub-parts 139,150 sitesUnder 35ms lab interaction 31%35 to 65ms lab interaction 26%65 to 110ms lab interaction 25%Over 110ms lab interaction 18%95%

Squarespace 1,907 sitesOver 110ms lab interaction 53%65 to 110ms lab interaction 22%Under 35ms lab interaction 14%35 to 65ms lab interaction 12%99%

Adobe Commerce 800 sitesUnder 35ms lab interaction 31%35 to 65ms lab interaction 28%65 to 110ms lab interaction 28%Over 110ms lab interaction 13%98%

WordPress 50,684 sites65 to 110ms lab interaction 27%Under 35ms lab interaction 26%35 to 65ms lab interaction 24%Over 110ms lab interaction 23%98%

Wix 3,481 sitesUnder 35ms lab interaction 50%35 to 65ms lab interaction 27%65 to 110ms lab interaction 16%97%

Drupal 2,084 sitesUnder 35ms lab interaction 35%35 to 65ms lab interaction 29%65 to 110ms lab interaction 24%Over 110ms lab interaction 12%97%

Shopify 7,615 sitesUnder 35ms lab interaction 34%65 to 110ms lab interaction 26%35 to 65ms lab interaction 20%Over 110ms lab interaction 20%96%

Joomla 1,755 sitesUnder 35ms lab interaction 27%35 to 65ms lab interaction 26%65 to 110ms lab interaction 24%Over 110ms lab interaction 23%95%

Under 35ms lab interaction 35 to 65ms lab interaction 65 to 110ms lab interaction Over 110ms lab interaction

Does the platform explain the synthetic interaction sub-parts difference?

On WordPress, 98% of sites with under 35ms lab interaction duration synthetic interaction sub-parts have a good INP, against 98% of WordPress sites with 35 to 65ms lab interaction duration. Within WordPress, sites with under 35ms lab interaction duration and 35 to 65ms lab interaction duration have a good INP about equally often. On Shopify, 98% of sites with under 35ms lab interaction duration synthetic interaction sub-parts have a good INP, against 97% of Shopify sites with 35 to 65ms lab interaction duration. Within Shopify, sites with under 35ms lab interaction duration and 35 to 65ms lab interaction duration have a good INP about equally often.

How input delay, processing, and presentation add up

Every user tap or click waits for background main-thread tasks to finish (input delay), runs event callbacks (processing), and recalculates styles and paints the next frame (presentation). Across 42,624 sites (30.6%) under 35ms in lab interactions, 96% pass field INP at an 85ms median, versus 95% (92ms median) on the 18.1% (25,246) exceeding 110ms.