The verdict in three sentences
In Senegal and across francophone West Africa, more than 9 B2B visits in 10 come from a smartphone, often on 4G that drops to 3G inside offices or on the road. A 6 MB page takes 12 to 20 seconds to render under these conditions, and most prospects close the tab first. A targeted optimisation at 800,000 to 2,500,000 FCFA (about EUR 1,220 to 3,810) brings page weight under 1.5 MB and cut mobile bounce rate from 71% to 44% in one of our client cases.
Why a site that is fast in Dubai or Europe can be slow in Dakar
Many corporate sites serving African markets, including those run from regional headquarters in Dubai, are hosted in Europe, the Gulf or the US without a CDN that has African edge locations. Every request then crosses submarine cables with 120 to 250 ms of latency, multiplied by the 80 to 150 files of a poorly built page. Add mobile data plans that remain expensive for consumers and field sales staff alike, and every megabyte costs your visitor money.
| Factor | Common situation in Dakar | Effect on loading |
|---|---|---|
| Network | Unstable 4G, drops to 3G indoors | Real throughput 1 to 5 Mbit/s |
| Latency to a European server | 120 to 180 ms | +2 to 4 s on a 100-request page |
| Latency to a US server | 200 to 250 ms | +3 to 6 s |
| Dominant smartphones | Entry and mid-range Android | Heavy JavaScript runs 3 to 5 times slower |
| Average observed weight | 4 to 8 MB per homepage | 12 to 20 s on 3G |
| Target weight | Under 1.5 MB | 3 to 5 s on 3G, under 2.5 s on 4G |
Levers ranked by cost and gain
Not all optimisations are equal. The table below gives 2026 ballpark figures for a 15 to 40-page corporate website aimed at users in Dakar.
| Lever | Indicative cost | Weight or time gain | Priority |
|---|---|---|---|
| WebP/AVIF image compression + responsive sizes | 150,000 to 400,000 FCFA (EUR 230 to 610) | -50 to -70% of weight | 1 |
| CDN with African points of presence (Lagos, Johannesburg, Nairobi) | 0 to 25,000 FCFA/month (EUR 0 to 38) | -1 to -3 s latency | 1 |
| Removing autoplay videos and heavy carousels | 100,000 to 250,000 FCFA (EUR 150 to 380) | -1 to -3 MB | 2 |
| Cleaning up third-party scripts (chat, pixels, widgets) | 150,000 to 350,000 FCFA (EUR 230 to 535) | -30 to -50% of JavaScript | 2 |
| System fonts or a single self-hosted font | 50,000 to 120,000 FCFA (EUR 75 to 185) | -200 to -600 KB | 3 |
| Server caching and compression (Brotli) | 100,000 to 250,000 FCFA (EUR 150 to 380) | -20 to -30% transfer | 3 |
| Theme rebuild or move to a static site | 1,200,000 to 2,500,000 FCFA (EUR 1,830 to 3,810) | Weight divided by 3 to 5 | If the rest is not enough |
An "essential" optimisation package (levers 1 to 3) sits around 800,000 to 1,200,000 FCFA (EUR 1,220 to 1,830). The full package, including a theme rebuild, reaches 2,000,000 to 2,500,000 FCFA (EUR 3,050 to 3,810). Payment in two instalments by Wave or Orange Money is possible, and international groups can pay by card or transfer in EUR or USD.
Measured results in a client case
| Metric | Before | After 4 weeks |
|---|---|---|
| Homepage weight | 6.2 MB | 1.3 MB |
| Number of requests | 142 | 41 |
| Largest Contentful Paint (LCP) on 4G | 7.8 s | 2.4 s |
| Mobile bounce rate | 71% | 44% |
| Contact forms submitted / month | 18 | 31 |
| WhatsApp button clicks / month | 46 | 89 |
Mini case study
Omar, digital director of a Dubai-based services group whose B2B IT subsidiary in Dakar receives 18 contact requests per month through the website. The close rate is 15% and an average contract brings in 2,400,000 FCFA (about EUR 3,660).
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He commissions an optimisation at 1,400,000 FCFA (about EUR 2,135). Requests rise to 31 per month, 13 more. At a 15% close rate, that is roughly 2 extra contracts per month, close to 4,700,000 FCFA (about EUR 7,170) of additional monthly revenue. Even halving that gain to stay conservative, the optimisation pays for itself in the first month.
FAQ
Does the site need to be hosted in Senegal to be fast?
Not necessarily. European or Gulf hosting combined with a CDN that has African points of presence often beats a local server without caching. The CDN cuts latency by 1 to 3 seconds for 0 to 25,000 FCFA (EUR 0 to 38) per month.
What page weight should a corporate site aim for?
Under 1.5 MB for the homepage and under 1 MB for inner pages. At that level, the page renders in 3 to 5 seconds even on 3G.
How long does an optimisation take?
Allow 1 to 2 weeks for the essential package and 3 to 5 weeks if the theme must be rebuilt. The site stays online throughout.
Do the results last?
Yes, as long as the team uploads correctly sized images. We add automatic compression on upload and a monthly weight check, included in maintenance from 50,000 FCFA (about EUR 76) per month.
Does speed also improve Google rankings?
Yes, Core Web Vitals are a ranking signal and Google measures your real visitors, meaning African mobile users. A lighter page also gains in pages per visit, often +20 to +40%.
Let's scope your project. Send us your website address and we will measure its real mobile weight from Senegal and price the optimisation (800,000 to 2,500,000 FCFA, about EUR 1,220 to 3,810) with a 1 to 5-week timeline. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
