100.0% of Wix sites use unencoded binary assets subresource HTTP compression, 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 dataBy Arjen Karel · corewebvitals.io/state-of-cwv
Sites with unencoded binary assets subresource HTTP compression have a good LCP most often: 94%, against 94% of all Wix sites. Sites with Zstandard (zstd) compression subresource compression have it least often, at 92%.
SitesGood, needs improvement, poor LCPMedian
All Wix sites5,33394%1.2s
Unencoded binary assets (images / WOFF2) 100.0%5,33394%1.2s
Gzip (Content-Encoding: gzip) 100.0%5,33394%1.2s
Brotli (Content-Encoding: br) 99.9%5,33294%1.2s
Zstandard (Content-Encoding: zstd) 31.5%1,68892%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 dataBy Arjen Karel · corewebvitals.io/state-of-cwv
2
Subresource HTTP compression usage
Unencoded binary assets is the most used: 100.0% of Wix sites.
Sites using each option (sites can use more than one) 5,621 sites
Unencoded binary assets (images / WOFF2) 100.0% Gzip (Content-Encoding: gzip) 100.0% Brotli (Content-Encoding: br) 99.9%
Unencoded binary assets (images / WOFF2) 100.0% Gzip (Content-Encoding: gzip) 100.0% Brotli (Content-Encoding: br) 99.9% Zstandard (Content-Encoding: zstd) 31.5%
The State of Web Vitals · October 2026 · Wix: 5,621 crawled sites · 5,333 with all devices field dataBy Arjen Karel · corewebvitals.io/state-of-cwv
3
LCP phase breakdown by subresource compression algorithm
Across the four LCP sub-parts in Chrome's field data, the largest gap between unencoded binary assets and Zstandard (zstd) compression sits in time to first byte (TTFB): 419 ms median for unencoded binary assets against 506 ms for Zstandard (zstd) compression. Overall median field LCP is 1.2s for unencoded binary assets (TTFB 419 ms, load delay 455 ms, load duration 137 ms, render delay 151 ms) versus 1.4s for Zstandard (zstd) compression.
Median LCP phase breakdown (Chrome field p75) Load delay Median LCP
All Wix sites 3,945419 ms455 ms151 ms455 mslab 455 ms1.2s
Brotli (Content-Encoding: br) 3,945419 ms455 ms151 ms455 mslab 455 ms1.2s
Gzip (Content-Encoding: gzip) 3,945419 ms455 ms151 ms455 mslab 455 ms1.2s
Unencoded binary assets (images / WOFF2) 3,945419 ms455 ms151 ms455 mslab 455 ms1.2s
Zstandard (Content-Encoding: zstd) 1,235506 ms481 ms148 ms153 ms481 mslab 481 ms1.4s
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 dataBy Arjen Karel · corewebvitals.io/state-of-cwv
4
Subresource HTTP compression per framework
React sets the subresource HTTP compression to unencoded binary assets on 100% of its sites, and 94% of React sites have a good LCP, against 94% of all sites.
FrameworkSubresource HTTP compression on its sitesGood LCP
All Wix sites 5,621 sitesUnencoded binary assets (images / WOFF2) 100%Gzip (Content-Encoding: gzip) 100%Brotli (Content-Encoding: br) 100%Zstandard (Content-Encoding: zstd) 32%94%
React 5,620 sitesUnencoded binary assets (images / WOFF2) 100%Gzip (Content-Encoding: gzip) 100%Brotli (Content-Encoding: br) 100%Zstandard (Content-Encoding: zstd) 32%94% Unencoded binary assets (images / WOFF2) Gzip (Content-Encoding: gzip) Brotli (Content-Encoding: br) Zstandard (Content-Encoding: zstd)
The State of Web Vitals · October 2026 · Wix: 5,621 crawled sites · 5,333 with all devices field dataBy Arjen Karel · corewebvitals.io/state-of-cwv
5
Subresource compression or the framework
Does the framework explain the subresource HTTP compression difference?
Almost every site with unencoded binary assets subresource HTTP compression is a React site, and almost every React site has unencoded binary assets subresource HTTP compression, so the data can't tell unencoded binary assets subresource HTTP compression and React apart.
The State of Web Vitals · October 2026 · Wix: 5,621 crawled sites · 5,333 with all devices field dataBy Arjen Karel · corewebvitals.io/state-of-cwv