People do not wait for slow websites anymore. On mobile, a site that takes more than a couple of seconds to become usable loses a large slice of its visitors before they see anything. Every one of those bounces is a customer you paid to attract, through ads, content, or referrals, and then lost to a loading spinner.
Google formalised this with Core Web Vitals, measurements of how fast your page shows its main content, how quickly it responds to taps, and whether the layout jumps around while loading. These scores affect rankings directly. Two similar sites, the faster one wins the position, and the position wins the traffic.
Speed now also affects how AI systems see you. Crawlers feeding AI assistants have budgets, and heavy, script-choked pages get crawled less and understood worse. A fast, clean site is easier for machines to read and easier for people to buy from. It is the same fix twice.
The causes of slowness are boringly consistent: oversized images, videos loading before they are needed, plugin bloat, cheap hosting, and themes carrying ten years of features you never use. The fixes are equally unglamorous: compress and resize media, load below-the-fold content lazily, cut scripts, and serve pages from a CDN.
Our rule when we build: a site should feel instant on a mid-range phone with average signal, because that is where your real customers are. Test yours on PageSpeed Insights today. If it scores poorly, fixing that is probably the highest-return marketing work you can do this month.