Squarespace — Core Web Vitals

74.6% of Squarespace sites pass all three Core Web Vitals

#3 of 12 CMSs by overall pass rate
Add TTFB and only 74.4% still pass
Runs on 1.1% of all sites measured (2,258 crawled Squarespace sites, 523 with desktop 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 1.9s p75

94.0% good ▲ fleet 86.1%

INP 59ms p75

99.8% good ▲ fleet 98.9%

CLS 0.08 p75

81.5% good ▲ fleet 77.9%

TTFB diagnostic 462ms p75

98.2% good ▲ fleet 63.1%

FCP diagnostic 1.2s p75

95.4% good ▲ fleet 82.3%

Squarespace is strong across the board. Even its weakest metric, INP (99.8% good), is ahead of the fleet’s 98.9%. The fingerprint shows the habits behind it.

CMS standings

#1 Wix 88.2% #2 Shopify 82.6% #3 Squarespace 74.6% #4 Drupal 72.7% #5 Typo3 71.1% #6 Joomla 70.9% #7 WordPress 60.3% #8 Adobe Commerce 59.3%

All CMSs →

210,902 crawled sites (69,745 with desktop Chrome field data), representing millions of real page loads, October 2026 edition. How we measured.