Why most agency sites load slower than they should

Most slow sites aren't slow because of one big mistake — they're slow because of a dozen small ones that add up: unoptimized images, render-blocking scripts, and 3D or animation libraries loaded on every page instead of just where they're needed.

The fix starts with measurement, not guessing. Before touching code, we run a Lighthouse pass and look at what's actually blocking the main thread. Nine times out of ten, it's images and third-party scripts, not the framework.

For image-heavy sites, serving the right format (WebP/AVIF) at the right size makes the single biggest difference. For animation-heavy sites like ours, lazy-loading the 3D canvas so it only mounts once the hero is in view keeps the rest of the page fast even if the hero itself is doing real WebGL work.

The takeaway: performance isn't a framework choice, it's a habit — measure early, load only what's on screen, and treat every added dependency as a cost that needs to earn its place.