The verdict in three sentences
An insurance broker website showing an LCP of 4.8 s and an INP of 380 ms on mobile is losing a measurable share of its quote requests. A Core Web Vitals audit at 1,200 to 2,500 EUR, followed by 3,000 to 8,000 EUR of fixes, gets most sites back into the green, for a total of 4,000 to 10,000 EUR in Berlin. The uplift after bringing LCP under 2.5 s is around 18% more conversions on quote forms, a 2026 ballpark seen on financial services sites.
Where does your site stand against Google's thresholds?
Google assesses three metrics on real-user data (CrUX report), at the 75th percentile. A typical broker site with a premium calculator, chat, tracking tools and a consent banner often fails all three.
| Metric | Good threshold | Poor threshold | Berlin broker site (before) | Main cause |
|---|---|---|---|---|
| LCP (main content render) | ≤ 2.5 s | > 4 s | 4.8 s | 1.9 MB hero image, render-blocking font |
| INP (responsiveness) | ≤ 200 ms | > 500 ms | 380 ms | Heavy JavaScript calculator, 14 third-party scripts |
| CLS (visual stability) | ≤ 0.1 | > 0.25 | 0.19 | Consent banner and review widget injected late |
| TTFB (server time) | ≤ 0.8 s | > 1.8 s | 1.4 s | Shared hosting, no caching |
| Homepage weight | < 1.5 MB | > 4 MB | 5.2 MB | Autoplay video, unused libraries |
INP, which replaced FID in 2024, is the most underestimated metric: a car or home insurance calculator that freezes for 400 ms on every click discourages exactly the prospects who are closest to buying.
What do the audit and fixes cost?
| Service | 2026 price (EUR, excl. VAT) | Lead time | Deliverable |
|---|---|---|---|
| Full Core Web Vitals audit | 1,200 to 2,500 | 5 to 8 days | Prioritized report, CrUX and Lighthouse data, costed action plan |
| Image and font optimization | 800 to 1,800 | 3 to 5 days | AVIF/WebP, preload, font-display |
| Premium calculator rebuild (INP) | 1,500 to 3,500 | 1 to 2 weeks | Split computation, lazy loading, Web Worker |
| Third-party script cleanup, consent-first loading | 800 to 2,000 | 3 to 5 days | Clean tag manager, DSGVO-compliant firing |
| Hosting migration + EU CDN + caching | 700 to 1,800 | 3 to 5 days | TTFB under 0.6 s, data stays in the EU |
| Monthly performance monitoring | 250/month | Ongoing | Alerts, CrUX report, regressions fixed |
A broker running a plugin-heavy WordPress usually lands around 5,500 EUR of fixes. Above 8,000 EUR, a full technical rebuild at 9,000 to 15,000 EUR often makes more sense.
What is specific to a German broker site
German broker sites carry their own constraints: Impressum and §34d GewO registration details, initial information duties, multi-step quote forms, embedded comparison iframes and booking tools. Under DSGVO (GDPR) and the TDDDG, marketing and analytics scripts may only fire after consent, and Google Fonts loaded from US servers has already triggered warning letters in Germany. That is good news for performance: self-hosting fonts and loading scripts after consent removes several hundred milliseconds. Brokers working with BaFin-supervised insurers should also document which third parties process form data, which the audit maps out.
Mini case study
Jonas, managing director of a Berlin brokerage (12 staff, property and casualty plus commercial cover), gets 9,000 mobile visits a month at a 1.4% conversion rate, or 126 quote requests. Audit at 1,800 EUR, then fixes at 5,900 EUR: LCP down to 2.1 s, INP to 160 ms. With +18% conversions he reaches 149 requests a month, 23 more. At a 25% close rate and an average annual commission of 420 EUR, that is about 2,415 EUR of extra commission per month. The 7,700 EUR investment is recovered in just over 3 months.
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FAQ
Do Core Web Vitals really affect rankings?
They are part of page experience signals, with a moderate ranking effect that matters when relevance is equal. The bigger impact is on conversion: each second of LCP saved above 2.5 s lifts quote rates by several points.
How long until Search Console shows the result?
CrUX relies on a rolling 28 days of real-user data. Allow 4 to 6 weeks after release for URLs to move to Good.
Can we keep an insurer partner's calculator?
Yes, if it loads on demand behind a button. That single change often saves 0.8 to 1.5 s of LCP on the page.
Is 250 EUR monthly monitoring really needed?
It prevents regressions, which are common after adding a widget or a campaign. Among our clients, about 1 site in 3 slips back to amber within 6 months without monitoring.
Is a Lighthouse score of 100 the goal?
No, Lighthouse is a lab test. The goal is 75% of real visits under the thresholds, achievable with a mobile Lighthouse score of 85 to 95.
Let's scope your project. Send us your site URL and your monthly quote volume: we price the audit and fixes, typically 4,000 to 10,000 EUR in total over 3 to 6 weeks. 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.
