The State of Web Vitals

Web font formats on Wix sites

100.0% of font-using sites (5,598) serve modern WOFF2 fonts and reach 94% good LCP (1.2s median), while the 1.9% still serving legacy WOFF (90% good LCP) and 0.2% serving uncompressed TTF (89% good LCP) lag behind.

Field data PhoneDesktopAll Scope All sites October 2026 edition · All devices field outcomes · Wix sites only
Wix Scoped to 5,623 sites out of 203,892 analyzed (cms) Compare with all sites →

100.0% of Wix sites use WOFF2 fonts web font format, and 94% of those sites have a good LCP, against 94% of all Wix sites.

The State of Web Vitals · October 2026 · Wix: 5,621 crawled sites · 5,333 with all devices field data · 5,598 sites with web font formatBy Arjen Karel · corewebvitals.io/state-of-cwv
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LCP pass rate

Sites with WOFF2 fonts web font format have a good LCP most often: 94%, against 94% of all Wix sites. Sites with legacy WOFF fonts font formats have it least often, at 90%.

SitesGood, needs improvement, poor LCPMedian
All Wix sites5,33394%1.2s
WOFF2 (Brotli-compressed) 100.0%5,31194%1.2s
WOFF (Legacy zlib) 1.9%10190%1.3s
TrueType (TTF) 0.2%989%1.4s
GoodNeeds improvementPoorSites: with Chrome field data
The State of Web Vitals · October 2026 · Wix: 5,621 crawled sites · 5,333 with all devices field data · 5,598 sites with web font formatBy Arjen Karel · corewebvitals.io/state-of-cwv
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Web font format usage

WOFF2 fonts is the most used: 100.0% of Wix sites.

Sites using each option (sites can use more than one) 5,598 sites
WOFF2 (Brotli-compressed) 100.0%
WOFF2 (Brotli-compressed) 100.0% WOFF (Legacy zlib) 1.9% TrueType (TTF) 0.2%
The State of Web Vitals · October 2026 · Wix: 5,621 crawled sites · 5,333 with all devices field data · 5,598 sites with web font formatBy Arjen Karel · corewebvitals.io/state-of-cwv
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LCP phase breakdown by web font format

Across the four LCP sub-parts in Chrome's field data, the largest gap between WOFF2 fonts and legacy WOFF fonts sits in time to first byte (TTFB): 420 ms median for WOFF2 fonts against 491 ms for legacy WOFF fonts. Overall median field LCP is 1.2s for WOFF2 fonts (TTFB 420 ms, load delay 455 ms, load duration 136 ms, render delay 151 ms) versus 1.3s for legacy WOFF fonts.

Median LCP phase breakdown (Chrome field p75) Load delay Median LCP
Wix sites with web font format 3,929420 ms455 ms455 mslab 455 ms1.2s
WOFF2 (Brotli-compressed) 3,929420 ms455 ms455 mslab 455 ms1.2s
WOFF (Legacy zlib) 75491 ms474 ms474 mslab 474 ms1.3s
TTFB Resource load delay Resource load time Element render delay
The State of Web Vitals · October 2026 · Wix: 5,621 crawled sites · 5,333 with all devices field data · 5,598 sites with web font formatBy Arjen Karel · corewebvitals.io/state-of-cwv
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Web font format per framework

React sets the web font format to WOFF2 fonts on 100% of its sites, and 94% of React sites have a good LCP, against 94% of all sites.

FrameworkWeb font format on its sitesGood LCP
Wix sites with web font format 5,598 sitesWOFF2 (Brotli-compressed) 100%94%
React 5,597 sitesWOFF2 (Brotli-compressed) 100%94%
WOFF2 (Brotli-compressed) WOFF (Legacy zlib) TrueType (TTF)
The State of Web Vitals · October 2026 · Wix: 5,621 crawled sites · 5,333 with all devices field data · 5,598 sites with web font formatBy Arjen Karel · corewebvitals.io/state-of-cwv
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Web font format or the framework

Does the framework explain the web font format difference?

Almost every site with WOFF2 fonts web font format is a React site, and almost every React site has WOFF2 fonts web font format, so the data can't tell WOFF2 fonts web font format and React apart.

Why WOFF2 replaces legacy WOFF, TTF, and OTF across all modern browsers

WOFF2 uses custom Brotli preprocessing to compress font glyphs ~30% smaller than legacy WOFF and up to 50%+ smaller than raw TTF or OTF files, and has been supported by every major browser since 2016. Across 5,598 font-using sites (100.0%) serving WOFF2, good LCP reaches 94% (1.2s median). Sites still serving legacy WOFF (1.9%, 105) drop to 90% good LCP (1.3s median), and sites serving raw TTF (0.2%, 9) drop to 89% good LCP (1.4s median).

The State of Web Vitals · October 2026 · Wix: 5,621 crawled sites · 5,333 with all devices field data · 5,598 sites with web font formatBy Arjen Karel · corewebvitals.io/state-of-cwv
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Understanding web font formats

Declare only format("woff2") in your @font-face src rules and ensure WOFF2 is listed first if legacy fallbacks exist, so modern browsers never download uncompressed TTF or WOFF files. Across all font-using sites, 100.0% serve WOFF2 (94% good LCP) versus 0.2% serving raw TTF (89% good LCP).

Go fix it Self-host Google Fonts → Responsive font loading strategy →
The State of Web Vitals · October 2026 · Wix: 5,621 crawled sites · 5,333 with all devices field data · 5,598 sites with web font formatBy Arjen Karel · corewebvitals.io/state-of-cwv
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