Where your visitors actually are.
THE REALITY
The large majority of Nigerian web traffic is mobile, frequently on constrained connections and metered data.
A site tested only on a desktop is failing most of its visitors.
WHAT THIS MEANS PRACTICALLY
Compress images aggressively. A visitor paying for data notices a heavy page. Text at least sixteen pixels, with strong contrast, readable outdoors Phone number tappable Forms usable with a thumb Nothing requiring horizontal scrolling
TESTING PROPERLY
On an actual mid-range phone, on mobile data, outdoors in daylight.
Not a resized desktop browser. The difference is substantial.
DATA COST
A page of several megabytes costs your visitor money. That is a reason to leave, and they will not tell you.
Compressing images is the single largest improvement available to most sites.
For many businesses, a WhatsApp button converts better than any form. Add it if someone will actually answer.
THE TEST
Load your homepage on a phone with data saving enabled. If it is slow or awkward, that is what most of your customers experience.