The verdict in three sentences
An INP of 450 ms on a 4,500-SKU medical catalogue means every click on a filter or an "Add to quote" button feels frozen, and clinic buyers give up. A Core Web Vitals audit at EUR 2,500 to 4,500 excl. VAT followed by a front-end redesign at EUR 18,000 to 32,000 brings INP under 200 ms and LCP under 2.5 s in roughly 12 weeks. The expected 15 to 25% conversion uplift usually pays back the project in under 12 months for a distributor that takes a meaningful share of its orders online.
What a Core Web Vitals audit reveals on a medical catalogue
Medical distribution sites stack up traps: product pages with 20 to 40 variants (glove sizes, catheter references), regulatory instruction PDFs, contract pricing computed in the browser, layered chat and tracking scripts. The e-business director sees a 68% mobile bounce rate, while care coordinators and nursing home buyers increasingly order from a tablet or smartphone between rounds.
The audit measures Google's three metrics on field data (CrUX, rolling 28 days) and then in the lab, page by page.
| Metric | Google "good" threshold | Current situation | Target after redesign |
|---|---|---|---|
| INP (responsiveness) | under 200 ms | 450 ms | 150 to 180 ms |
| LCP (main content display) | under 2.5 s | 4.1 s on mobile 4G | 1.8 to 2.2 s |
| CLS (visual stability) | under 0.1 | 0.22 | under 0.05 |
| Average product page weight | under 1.5 MB | 4.8 MB | 1.1 to 1.4 MB |
| Third-party JavaScript | under 300 KB | 1.2 MB (12 scripts) | 250 to 350 KB |
| Mobile bounce rate | 35 to 45% in B2B | 68% | 40 to 48% |
Typical root causes: a filter engine that recomputes the whole catalogue on each click, uncompressed 3,000-pixel product images, a customer pricing configurator that blocks the main thread, and shared hosting with no page cache. The audit delivers a list prioritised by impact and effort, costed task by task.
2026 budget: audit, redesign and hosting
The budget depends mostly on two choices: fixing the existing platform or rebuilding the front end (headless approach or modern framework), and the depth of integration with the ERP that manages stock and contract prices.
| Item | 2026 range (EUR excl. VAT) | Indicative timeline |
|---|---|---|
| Core Web Vitals and accessibility audit | 2,500 to 4,500 | 2 weeks |
| Image, cache and CDN optimisation | about 3,000 | 1 to 2 weeks |
| Front-end redesign (catalogue, product pages, filters, quote cart) | 18,000 to 32,000 | 7 to 8 weeks |
| ERP connector for stock and contract prices | 4,000 to 9,000 | 2 to 3 weeks |
| QA, mobile testing and go-live | 2,000 to 3,500 | 1 week |
| EU hosting in the Netherlands | 150 to 300 per month | ongoing |
| Maintenance and performance monitoring | 400 to 900 per month | ongoing |
One caveat: a medical equipment catalogue does not need health-data-certified hosting as long as it stores no patient health data. Hosting in the Netherlands, however, reassures hospital buyers and simplifies GDPR supplier questionnaires. The realistic total sits between EUR 27,000 and 50,000 excl. VAT for the initial investment, a 2026 order of magnitude.
How to gain 15 to 25% more conversions
The gain does not come from speed alone. A redesign built for professional buyers adds search by manufacturer reference, quick order by file upload, one-click reorder of the last purchase order, and contract prices shown as soon as the buyer logs in. Combined with an INP under 200 ms, these features cut the number of steps between search and checkout. Public studies by Google and Deloitte put the effect of a 0.1 s gain on the mobile journey at 8 to 10% more conversions in online retail, which makes a 15 to 25% target consistent once response times are more than halved.
The typical 12-week plan: audit and trade-offs (weeks 1 and 2), mock-ups and mobile prototype (3 and 4), development and ERP connector (5 to 10), acceptance testing with a panel of 5 to 8 key accounts (11), progressive go-live and CrUX monitoring (12).
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Mini case study
Thomas, e-business director of a medical equipment distributor in Amsterdam, generates EUR 2.4 million excl. VAT of online revenue per year from 900 clinics, care homes and practices. His project: audit EUR 3,500, optimisation EUR 3,000, front-end redesign EUR 26,000, ERP connector EUR 6,000, QA EUR 2,500, for EUR 41,000 excl. VAT. With a cautious 15% conversion uplift, online revenue grows by EUR 360,000. At a 22% gross margin, that is EUR 79,200 of extra margin per year. The project pays back in just over 6 months, including EUR 250 per month of hosting.
FAQ
How much does a standalone Core Web Vitals audit cost for a B2B site in Amsterdam?
Budget EUR 2,500 to 4,500 excl. VAT depending on the number of templates analysed and the depth of the recommendations. A EUR 3,500 audit usually covers 8 to 12 page types and delivers a costed action plan.
Can INP be improved without rebuilding the whole site?
Yes, partly: optimising third-party scripts and caching, for about EUR 3,000, often brings INP from 450 to 280 ms. Getting under 200 ms on a 4,500-SKU catalogue almost always requires rebuilding the filter engine and the front end.
Do we need certified health-data hosting to sell medical equipment online?
No, as long as the site only processes professional customer data and no patient health data. EU hosting at EUR 150 to 300 per month is enough and eases GDPR compliance.
What timeline should we plan for a full project?
About 12 weeks from audit kick-off to go-live, including 7 to 8 weeks of development. CrUX data reflects the improvement roughly 28 days after launch.
What is the impact on organic search?
Core Web Vitals are one ranking signal among many, mostly visible when relevance is equal. Distributors often see a 10 to 20% rise in mobile organic traffic within 6 months, also driven by lower bounce rates.
Let's scope your project. Send us your catalogue URL and online order volume: we will scope the audit, a redesign budget between EUR 27,000 and 50,000 excl. VAT and a 12-week plan. 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.
