Guides
How to measure a site and read what comes back. Each guide carries at least one number from our own audit base, because the steps themselves are documented by Google and repeating them is not worth your time or ours.
How to run a Lighthouse speed test
Three ways to run it — Chrome DevTools, PageSpeed Insights and the command line — and what to do about the fact that the score moves between runs.
18% of our mobile measurements put two rounds in different bands Servinggzip or Brotli: what to switch on, and what it costs
Maximum-quality Brotli on our own shared host took Speed Index from 1.6 s to 3.8 s. How to check what your server sends, and why the cheaper algorithm won here.
1.6 → 3.8 s Speed Index after enabling per-request Brotli-11 SetupHow to change a DNS record without breaking your site or email
Find which company actually runs your DNS, keep the old value, change the one record you were given. Steps for Cloudflare, GoDaddy, Squarespace, Wix, Namecheap and others.
23% of 1,051 sites we audited edit their DNS at Cloudflare PlatformsShould you strip WooCommerce from pages that don’t sell?
How much WooCommerce loads on a homepage with nothing to sell, the stylesheets worth keeping to store pages, and why cart fragments and order attribution can stay.
34 KB median WooCommerce footprint on 33 store homepages with nothing to sell ChoosingFive ways to speed up a website, and where each one stops
A plugin, a CDN, a script in the head, a developer or a proxy. What each one reaches on the page, where it stops, and which fits a WordPress site, a builder or a site that is already fast.
59% vs 63% of 705 WordPress sites we audited still gained, behind Cloudflare and withoutOne rule for this section: a guide gets published only if we can put something measured into it. Where a step is just a step, we link Google's own documentation rather than retype it. That is why this section grows slowly.
Or let us run the measurement
A free before / after PageSpeed comparison on mobile and desktop. No signup.
That doesn’t look like a website address. Enter a domain — for example example.com or https://example.com/page.
No signup. See your before/after PageSpeed score in about a minute. What the report shows