A fast website lets a visitor read, compare and act without unnecessary waiting. South African visitors use different devices and connections, so a desktop test on fibre is not enough. There is no useful basis for claiming that speed matters more here than in every other country.

Know what a score can tell you

Lighthouse is a controlled lab test. It is useful for finding blocking resources and comparing changes under similar conditions. Its performance score is not a conversion rate or a guarantee that every visitor has a good experience.

Core Web Vitals field data describes real visits where sufficient data exists. LCP covers main-content loading, INP responsiveness to interaction and CLS visual stability. A site with no field dataset cannot honestly claim a field pass simply because its Lighthouse result is high.

Follow the actual bottleneck

Inspect the page's largest visible content and the chain of requests needed to display it. A large hero image, late stylesheet or slow server can require different fixes. Below-the-fold images should not compete unnecessarily with the opening viewport. Fingerprinted scripts and styles should be cacheable across visits.

For interactive pages, test opening menus, filtering products and submitting forms as well as initial loading. Use the NORDflam project as a catalogue example: the useful experience includes navigation and product discovery, not only the first image.

Keep the design; reduce waste

  • Size images for their display and preserve readable detail.
  • Avoid unnecessary client-side libraries and third-party tags.
  • Reserve space for media so content does not jump.
  • Respect reduced-motion preferences and provide a way to pause looping decoration.
  • Verify compression and caching on the deployed host.

Keep a record of the test URL, device profile and date. Repeat measurements because a single run can vary. Review the effect on real journeys rather than chasing a perfect score at the expense of clarity. Our website care service covers ongoing checks, while website design includes performance decisions from the start.