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Analyzing the Core Web Vitals performance impact of WordPress 6.3 in the field

September 19, 2023

As highlighted in the WordPress 6.3 performance summary post, the 6.3 release included numerous performance enhancements. Based on the lab benchmarks cited in that post, the test sites used with WordPress core were loading 27% faster for block themes and 18% faster for classic themes based on the Largest Contentful Paint (LCP) metric.

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This post was originally published on Make Core by Felix Arntz.
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