The verdict in three sentences
A full Core Web Vitals project for a B2B site in Toronto costs between 3,000 and 6,000 EUR in 2026, preceded by a performance audit at 700 EUR. The business gains are measurable: on a lead-focused site, taking LCP from 4.1s to 1.9s typically produces +22 % page views and -17 % bounce rate. It is one of the few SEO projects where impact shows in weeks, not months.
What the project covers and its budget
2026 Core Web Vitals rest on three metrics: LCP (largest element load, target < 2.5s), INP (interaction responsiveness, target < 200ms) and CLS (visual stability, target < 0.1). A slow B2B site loses Google positions and converts less.
| Service | 2026 price (EUR) | Main impact |
|---|---|---|
| Full performance audit | 700 | Prioritised diagnosis |
| LCP + INP project | 3,000 - 6,000 | Speed + responsiveness |
| AVIF/WebP image migration | 1,200 | -60 % image weight |
| JavaScript / hydration optimisation | 1,500 | INP < 200ms |
| CDN (Cloudflare / Bunny) | 30 / month | Global latency |
| Lazy-loading + critical preload | included | LCP -1 to -2s |
For a 20-to-40-page B2B site, budget a total of 4,000 to 7,000 EUR the first time, then a marginal maintenance cost thanks to the 30 EUR/month CDN.
The before / after table that matters
Here is the measured evolution on a typical industrial B2B site after 3 weeks of work.
| Metric | Before | After | Google target |
|---|---|---|---|
| LCP | 4.1 s | 1.9 s | < 2.5 s |
| INP | 310 ms | 170 ms | < 200 ms |
| CLS | 0.24 | 0.05 | < 0.1 |
| Average page weight | 3.8 MB | 1.2 MB | - |
| Page views / session | 2.3 | 2.8 (+22 %) | - |
| Bounce rate | 58 % | 48 % (-17 %) | - |
Moving LCP under 2.5s and INP under 200ms shifts the site into the green zone on all three metrics, which Google rewards on competitive queries.
Mini case study
Sarah, marketing manager at an industrial equipment manufacturer in Toronto, faced a 58 % bounce rate and stalled rankings. Approved quote: 700 EUR audit, 4,200 EUR LCP/INP project, 1,200 EUR AVIF migration and 30 EUR/month CDN, i.e. 6,100 EUR the first year.
After the project, LCP at 1.9s, INP at 170ms, +22 % page views and -17 % bounce. The site generates 2.3 extra quote requests per week. With an average B2B basket of 8,500 EUR and a 20 % closing rate, that is roughly 20,000 EUR of extra monthly pipeline. The 6,100 EUR investment pays back on the first signed deal.
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FAQ
How fast is the SEO effect?
User-experience gains (bounce, page views) show in 1 to 3 weeks. The effect on Google positions takes 4 to 8 weeks, the time for Google to recrawl and re-evaluate Core Web Vitals signals.
AVIF or WebP in 2026?
AVIF offers 20 to 30 % more compression than WebP at equal quality and is now supported by over 95 % of browsers. An AVIF migration at 1,200 EUR remains one of the best cost/impact ratios on LCP.
Is a 30 EUR/month CDN enough?
For a B2B site with North American/European traffic, yes. Cloudflare or Bunny CDN at 30 EUR/month cut latency by 100 to 300ms depending on geography. Above 200,000 visits/month, budget a tier at 80 - 150 EUR/month.
Does the project break the site design?
No. Optimisation touches resource weight, loading and rendering, not the layout. Good work improves CLS (visual stability), so the site looks more polished, not less.
Rebuild everything or optimise what exists?
In 80 % of cases, optimising the existing site at 3,000 - 6,000 EUR is enough. A full rebuild is only justified when the technical foundation (obsolete theme or framework) prevents hitting the targets.
Let's scope your project. Send us your B2B site URL and current PageSpeed scores: we will price the LCP/INP project, image migration and CDN to match your traffic. 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.
