In markets where data is effectively free and unlimited, page weight is a speed problem. In Namibia it is also a cost problem. A visitor on a prepaid bundle is spending real money to load your homepage, and if that homepage is heavy they are spending more of it than they need to.
This is not an abstract nicety. A heavy site loses the customer twice. Once because it is slow, and once because loading it cost them something.
A working budget
| Budget | Weight | What it means |
|---|---|---|
| Target | Under 500 KB | Loads comfortably on a weak connection |
| Acceptable | 500 KB to 1 MB | Noticeably slow on 3G, workable on LTE |
| Too heavy | 1 MB to 2 MB | Visitors on data will feel the cost |
| Broken | Over 2 MB | You are losing people before they see anything |
Where the weight actually goes
In almost every site we audit, the order is the same. Images first, by a wide margin. JavaScript second. Fonts third. CSS is almost never the problem, despite being the thing people most often try to minify.
This means the highest leverage work is nearly always image work, and the most common mistake is shipping a photograph at its original camera dimensions and letting the browser scale it down. The browser scales the display size. It still downloads every pixel.
The fixes, in order of return
Resize before you upload
No image on a website needs to be 4000 pixels wide. A full width hero rarely needs more than 1600. A card thumbnail rarely needs more than 800.
Use a modern format
WebP typically saves a quarter to a third over JPEG at the same visual quality. Most tools export it now.
Set explicit width and height
This does not reduce weight, but it stops the page jumping as images arrive, which is what makes a slow site feel broken rather than just slow.
Lazy load anything below the fold
The visitor may never scroll that far. Do not make them pay for it up front.
Then look at JavaScript
Ask what each third party script is actually earning. Chat widgets, tag managers and analytics stacks accumulate quietly and are rarely audited after installation.
Fix the images before you optimise anything else. On most sites it is more than half the total weight and it is the easiest thing to change.
