The verdict in three sentences
An industrial catalog of 4,000 SKUs that loads in 5.8 seconds loses rankings and quote requests, regardless of its content. A targeted performance project at 4,000-9,000 EUR over 4-6 weeks brings the LCP under 2.5s via AVIF images, lazy loading and CDN caching. The 2026 payoff: +15 to +30% indexed pages and a quote conversion rate up about +12%.
Why Core Web Vitals block industrial SEO
Catalog sites suffer from heavy images, massive product pages and slow server rendering. Google measures three key signals, and just one in red is enough to cap you.
| Metric | Good (2026) | Needs fixing | Main lever |
|---|---|---|---|
| LCP (Largest Contentful Paint) | < 2.5s | > 4s | AVIF images, CDN, cache |
| INP (Interaction to Next Paint) | < 200ms | > 500ms | Lighter JS, code splitting |
| CLS (Cumulative Layout Shift) | < 0.1 | > 0.25 | Fixed media dimensions |
| Catalog page weight | < 1.5 MB | > 4 MB | Compression, modern formats |
| HTTP requests | < 50 | > 120 | Bundling, sprites, lazy load |
The performance project and its 2026 budget
The work breaks into measurable lots. Each lot is validated before the next, with before/after measurement on PageSpeed and field data (CrUX).
| Lot | Content | 2026 range (EUR) |
|---|---|---|
| Performance audit | Diagnosis, perf budget, prioritization | 800 - 1,500 |
| Images & media | AVIF/WebP conversion, responsive, lazy load | 1,000 - 2,500 |
| Cache & CDN | CDN, server cache, Brotli compression | 800 - 2,000 |
| Front-end | Code splitting, defer JS, critical CSS | 1,000 - 2,500 |
| Measurement & tracking | CrUX monitoring, final report | 400 - 800 |
Mini case study
Philippe, sales director of a component manufacturer in Singapore, runs a 4,000-SKU catalog with a 5.8s LCP. He invests 6,500 EUR over 5 weeks. After the project, LCP drops to 2.1s, 22% more pages are indexed and the quote-form conversion rate rises from 2.4% to 2.7%. On 9,000 monthly visits, that is about 27 extra quote requests per month. With a 20% win rate and an average order of 4,500 EUR, the investment pays back in under two months.
FAQ
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Does a performance project really improve SEO?
Yes, indirectly but clearly: speed is a ranking factor and above all it unlocks crawling and indexing of large catalogs. Expect +15 to +30% indexed pages.
How long does such a project take?
Between 4 and 6 weeks for a catalog of several thousand SKUs, with per-lot validation and before/after measurement.
Do I need to rebuild the whole site?
No. In most cases we optimize the existing site (images, cache, front) without a rebuild. A rebuild is only justified if the platform is structurally obsolete.
AVIF or WebP in 2026?
AVIF offers better compression, but we serve WebP as fallback for older browsers. The weight saving often reaches 40 to 60% on product visuals.
How do you guarantee performance won't degrade?
We set a performance budget and CrUX monitoring: any regression beyond the threshold triggers an alert.
Let's scope your project. Catalog of 1,000 to 10,000 SKUs, LCP to fix, indicative budget 4,000-9,000 EUR over 4-6 weeks: send us your URL. 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.
