Squarespace — Core Web Vitals

79.6% of Squarespace sites pass all three Core Web Vitals

#5 of 12 CMSs by overall pass rate
Add TTFB and only 78.3% still pass
Runs on 1.1% of all sites measured (2,258 crawled Squarespace sites, 2,147 with 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

89.0% good ▲ fleet 82.5%

INP 93ms p75

99.5% good ▲ fleet 94.7%

CLS 0.04 p75

89.7% good ▲ fleet 87.8%

TTFB diagnostic 541ms p75

95.8% good ▲ fleet 58.7%

FCP diagnostic 1.5s p75

86.3% good ▲ fleet 76.6%

Squarespace is strong across the board. Even its weakest metric, CLS (89.7% good), is ahead of the fleet’s 87.8%. The fingerprint shows the habits behind it.

CMS standings

#1 Wix 90.2% #2 Shopify 87.6% #3 Squarespace 79.6% #4 Drupal 78.5% #5 Joomla 77.6% #6 Typo3 76.2% #7 WordPress 62.8% #8 Adobe Commerce 61.3%

All CMSs →

210,902 crawled sites (196,263 with Chrome field data), representing millions of real page loads, October 2026 edition. How we measured.