Performance

What is HTTP/3, and what does it mean for your store’s speed? How it works, when it helps, and how to check for it and turn it on.

How to make WordPress faster: optimize images, CSS, JavaScript and fonts, improve Core Web Vitals, and measure whether it works.

PHP version, OPcache, PHP-FPM workers and profiling: how to make WordPress spend less time on the server before the page is sent.

Is the database making your WordPress site slow? How to find the heavy queries and fix them with indexes, cleanup and caching.

What happens between a visitor clicking and WordPress sending the page? We follow one request through the server, PHP, hooks, the database and the cac...

A function in a filter plugin spent 100 ms building JSON. How we found it in New Relic, why the code looked the way it did, and how we got it under 1 ...