Squarespace — Core Web Vitals

78.6% of Squarespace sites pass all three Core Web Vitals

#6 of 12 CMSs by overall pass rate
Add TTFB and only 76.3% still pass
Runs on 1.1% of all sites measured (2,258 crawled Squarespace sites, 1,159 with phone field data)

The distribution, not just the median

Each bar is the good / needs-work / poor split for Squarespace. The marks where the whole fleet sits, so you can see who is ahead and who is behind.

LCP 2.1s p75

86.4% good ▲ fleet 81.8%

INP 105ms p75

98.4% good ▲ fleet 91.8%

CLS 0.02 p75

90.9% good ▲ fleet 88.9%

TTFB diagnostic 574ms p75

93.0% good ▲ fleet 59.0%

FCP diagnostic 1.6s p75

83.0% good ▲ fleet 75.5%

Squarespace is strong across the board. Even its weakest metric, CLS (90.9% good), is ahead of the fleet’s 88.9%. The fingerprint shows the habits behind it.

CMS standings

#1 Wix 88.8% #2 Shopify 84.9% #3 Typo3 80.6% #4 Squarespace 78.6% #5 Drupal 77.3% #6 Joomla 77.1% #7 WordPress 62.7% #8 Adobe Commerce 62.3%

All CMSs →

210,902 crawled sites (126,761 with phone Chrome field data), representing millions of real page loads, October 2026 edition. How we measured.