Load time is simply how long a page takes to show up and become usable once someone clicks a link or types a URL. It covers everything from the server answering the request to the images, text and scripts arriving and the page becoming interactive. Shorter is almost always better.
Picture a shop with a queue at the door. If people wait too long they walk off to a competitor, and the same happens online. Studies repeatedly show visitors leaving when a page drags past a few seconds. Load time is shaped by the same things Core Web Vitals measure and is heavily influenced by image optimization, since photos are usually the biggest files on a page.
It helps to know there is no single number called “load time”. One visitor on fast fibre near the server sees a page appear almost instantly, while another on mobile data across the country waits seconds for the same page. That is why teams measure it on real devices and connections rather than trusting one number from a fast office laptop.
There is also a difference between the first visit and a return visit. The first time, the browser has to download everything fresh; the second time, much of it is already cached locally, so the page can feel near-instant. A fair test looks at both, because a slow first load still loses the new visitor who has never seen your site before. Even small wins add up here: studies from large retailers have linked every extra second of delay to a measurable drop in sales.
The good news is that load time is fixable. Compressing images, serving them from a nearby server through a CDN, trimming unused code and caching pages all chip away at the wait until the site feels instant.
At TopDevs we treat speed as a feature, building lean pages and measuring load time on real devices so visitors never sit waiting for content.