The verdict in three sentences
A slow WordPress can't always be patched: beyond 15 plugins and a heavy theme, optimization hits a ceiling fast. A redesign to Next.js costs between 800,000 and 2,500,000 FCFA but cuts load time threefold, taking Lighthouse from 40 to 95+. The switch pays off as soon as your traffic or average order value make the 10 to 25% conversion gain worth more than the redesign cost.
Optimize WordPress or rebuild: the decision grid
Before rebuilding everything, price both options. Optimization (cache, CDN, WebP images, plugin cleanup) is cheap but plateaus; a redesign is costly but unlocks everything.
| Criterion | Optimize WordPress | Next.js redesign |
|---|---|---|
| Upfront cost | 150,000 – 400,000 FCFA | 800,000 – 2,500,000 FCFA |
| Achievable LCP | 2.5 – 3.5s | 0.8 – 1.5s |
| Lighthouse perf | 55 – 75 | 90 – 99 |
| Hosting /month | 25,000 – 60,000 FCFA | 0 – 20,000 FCFA |
| Plugin maintenance | high | low |
| Timeline | 3 – 7 days | 3 – 6 weeks |
If your site exceeds 5,000 visitors/month or sells online, the redesign is justified. Below that, start by optimizing.
What speed actually earns
Google penalizes poor Core Web Vitals in rankings, and every second shaved off load time improves conversion. Here is a 2026 order of magnitude.
| Metric | Before (slow WP) | After (Next.js) | Gain |
|---|---|---|---|
| LCP | 5.0s | 1.3s | -74% |
| Bounce rate | 58% | 41% | -17 pts |
| Pages /session | 1.8 | 2.9 | +61% |
| Conversion | 1.4% | 1.7 – 1.9% | +10 to 25% |
| Hosting cost /year | 540,000 FCFA | 120,000 FCFA | -420,000 FCFA |
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Mini case study
Fatou runs a cosmetics shop in Dakar: 8,000 visits/month, average order 18,000 FCFA, 1.4% conversion. That's about 112 orders/month (2,016,000 FCFA). After a Next.js redesign at 1,500,000 FCFA, her conversion rises to 1.7% (+0.3 pt), or ~135 orders and 2,430,000 FCFA/month, +414,000 FCFA. With hosting savings of 35,000 FCFA/month, the redesign pays for itself in under 4 months.
FAQ
Can I keep my content and SEO? Yes. Content is exported and URLs preserved via 301 redirects, retaining 95%+ of SEO equity when the migration is clean.
How long does a Next.js redesign take? Plan 3 to 6 weeks for a showcase site, more for an e-commerce with a catalog. The timeline depends on the number of pages to migrate.
Can my slow WordPress just be optimized? Often yes, down to a 2.5–3s LCP for 150,000 to 400,000 FCFA. Beyond that, the theme and plugins block further gains.
Will I lose the easy editing interface? No: Next.js pairs with a headless CMS (Sanity) offering editing as simple as WordPress, without the bloat.
At what traffic does a redesign pay off? Generally from 5,000 visits/month or with online sales, where the 10 to 25% conversion gain quickly covers the cost.
Let's talk about your project. We audit your WordPress and tell you within 48h whether to optimize or rebuild it. 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.
