WordPress 6.4 Performance Improvements

WordPress 6.4 is the third major release of the year that delivers a better user experience to site visitors by improving performance of the core software. This version improves server response time by ~4% over version 6.3.2. This, combined with additional frontend optimizations, leads to improvements to Largest Contentful Paint (LCP)—an important Core Web Vital. For example, Twenty Twenty-One (a classic theme) shows an improvement of ~4% for LCP and Twenty Twenty-Three (a block theme) shows a ~9% LCP improvement when run on WordPress 6.4 compared with 6.3.2 based on benchmarks conducted by the WordPress Performance team.

This post was originally published on Make Core by Emily Clarke.

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