The verdict in three sentences
In 2026, fixing the Core Web Vitals of a B2B site in Singapore costs between 3,500 and 9,000 EUR for a full audit followed by optimisation. The technical goal is clear: LCP < 2.5 s, INP < 200 ms, CLS < 0.1, achieved in 3 to 6 weeks of work. The expected return is an organic traffic gain of +15 to +30 % over 3 to 6 months, plus a lower bounce rate that directly improves conversion.
Diagnosis metric by metric
A marketing director wants to know which metric is failing and what its fix costs. Here is the typical diagnosis of an average B2B WordPress or Webflow site.
| Metric | Typical value before | Google target | Common cause |
|---|---|---|---|
| LCP | 3.5-4.8 s | < 2.5 s | Unoptimised images, slow server |
| INP | 250-450 ms | < 200 ms | Excess JavaScript, third-party scripts |
| CLS | 0.15-0.28 | < 0.1 | Images without dimensions, fonts |
| TTFB | 800-1,400 ms | < 600 ms | Shared hosting, no caching |
| Page weight | 3-5 MB | < 1.5 MB | Heavy media, plugins |
The diagnosis takes 3 to 5 days and costs 900 to 2,000 EUR; it drives the precise pricing of the work.
Quick wins or heavy projects
Not every optimisation carries the same cost or timeline. We prioritise what pays off fast.
| Action | Type | Indicative cost 2026 | Timeline | LCP gain |
|---|---|---|---|---|
| WebP/AVIF image compression | Quick win | 400-900 EUR | 2-3 d | -0.8 to -1.5 s |
| Lazy loading + CDN | Quick win | 600-1,200 EUR | 3-5 d | -0.5 to -1 s |
| JavaScript / third-party reduction | Medium | 1,200-2,800 EUR | 1-2 wk | INP -100 ms |
| Move to static / SSR rendering | Heavy | 2,500-5,000 EUR | 2-4 wk | -1.5 to -2.5 s |
| Heavy template rebuild | Heavy | 3,000-6,000 EUR | 3-4 wk | Global |
In 70 % of cases, quick wins are enough to get back into the green. Heavy projects are only justified when the template is structurally at fault.
SEO and conversion impact, quantified
| Indicator | Before optimisation | After (3-6 months) | Effect |
|---|---|---|---|
| Organic traffic/month | 4,000 | 4,800-5,200 | +15 to +30 % |
| Bounce rate | 58 % | 44-48 % | -10 to -14 pts |
| Conversion rate | 1.8 % | 2.3-2.7 % | +28 to +50 % |
| Average position | 14.2 | 9.5-11 | +3 to +5 places |
| Cost per lead | 95 EUR | 60-75 EUR | -20 to -37 % |
These 2026 orders of magnitude assume already relevant content: speed amplifies healthy SEO, it does not replace a content strategy.
Mini case study
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Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Thomas, marketing director of a B2B software vendor in Singapore, invests 6,200 EUR in audit plus optimisation. His LCP drops from 4.3 s to 1.6 s and INP from 380 ms to 150 ms. In 4 months, organic traffic gains +22 % and demo-request conversion rises from 1.8 % to 2.5 %. On 4,500 visitors/month, that is +31 monthly demo requests. At a 12 % close rate and an average contract of 4,800 EUR/year, the optimisation pays back in under two months.
FAQ
How long to get back into the green on PageSpeed?
Quick wins show an effect within the first week. Durably reaching LCP < 2.5 s and INP < 200 ms takes 3 to 6 weeks depending on the scope.
Does a good Core Web Vitals score guarantee more traffic?
Not on its own: it is one ranking factor among many. But in competitive markets it makes the difference between two sites with equivalent content, and above all it improves conversion.
Do we need to change host?
Often yes if TTFB exceeds 800 ms. Moving from shared hosting to edge hosting or a CDN halves TTFB for 25 to 75 EUR/month.
Can we optimise without a full rebuild?
In 70 % of cases yes. A rebuild is only required when the template or CMS structurally blocks performance.
Do marketing scripts (chat, analytics, ads) really slow things down?
Yes, they are the prime suspects for high INP. We defer their loading or route them through an optimised tag manager, without removing them.
Let's scope your project. Send us the URL to audit and your current PageSpeed scores: we price the quick wins and priority projects. 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.
