A slow site does not have one problem. It has twenty. Each one tiny, each one cumulative, each one costing you sessions and rankings. Every site on this network ships green, and stays green, because the boring work has already been done.
Numbers below are medians across the network, pulled from Chrome User Experience and PageSpeed lab runs on real client domains. Not synthetic. Not cherry picked.
Largest Contentful Paint. The moment the biggest thing on the page becomes visible. Target: under 1.8 seconds.
Median: 1.4sTime To First Byte. How fast the origin answers. Target: under 100ms for cached pages, under 300ms for dynamic.
Median: 49msCumulative Layout Shift. How much the page jumps while loading. Target: under 0.05. Higher than that and people bounce.
Median: 0.01Interaction to Next Paint. The new latency metric. How responsive the page feels to a click or tap. Target: under 200ms.
Median: 110msImage pipeline. Every image is re-encoded to AVIF with a WebP and JPEG fallback. Proper intrinsic width and height are written into the markup so CLS stays near zero. Above the fold images are eager, everything else is lazy.
Font strategy. System font stack for body, self hosted or CDN preconnected display font, font display swap by default. Never a blank render waiting on a font file.
Render blocking removal. CSS is hand written and scoped. JS defers by default. Third party scripts go through a kill list before they make it near the head tag.
Brotli edge cache. Nginx serves precompressed Brotli and gzip. Cache headers follow a written policy per asset type. Static files live in the browser for a year.
HTTP/2 and IPv6. On by default. No multiplex theater, no dual stack surprises.
Server side speed. FastAPI or Go sidecars for dynamic endpoints. No PHP unless the site actually needs PHP.
Observability. Real user monitoring through the CrUX dataset, public status page, nginx access logs tailed in real time. When something drifts, the operator sees it first.
Send a URL. You get a one page PDF back with every Core Web Vitals metric, render blocking issue and AEO gap. Under ten minutes, no signup.