Case study6 min read

Case study: how site72h.fr tripled its leads

site72h.fr, a 72-hour website creation service, goes from 12 to 38 leads/month after redesign. Audit, strategy and detailed results.

Jimmy Lefevre

Founder & Product Builder

May 10, 2026
Case study: how site72h.fr tripled its leads

Key takeaway

site72h.fr went from 12 to 38 leads per month after a redesign focused on conversion path optimization, technical performance and landing page overhaul.

The results - site72h.fr, a 72-hour website creation service, went from 12 to 38 qualified leads per month after redesigning their own site—a 3x multiplication in 4 months—through a strategy combining conversion path optimization, reinforced social proof, and technical performance improvements.

The context: the cobbler's children have no shoes

site72h.fr offers professional website creation delivered in 72 hours. A strong promise, real expertise, satisfied customers. But an embarrassing paradox: their own website wasn't converting.

12 quote requests per month. For a service that promises to transform its clients' digital presence, this was insufficient—and worse, not credible. The site attracted around 3,000 monthly visitors thanks to good SEO, but visitors left without taking action.

The founder contacted us with a direct question: "How can I sell websites if my own doesn't convince anyone?"

The audit: identifying blockers

Before proposing solutions, we analyzed the existing site from three angles.

User journey analysis

The site highlighted the "72 hours" promise but didn't make it credible. No concrete proof, no visible portfolio, no verified testimonials. A skeptical visitor had no reason to trust.

The ordering process was unclear. How does it actually work? What do I need to provide? What exactly do I receive in 72h? These questions remained unanswered.

The only call to action—"Request a quote"—appeared as too strong a commitment for a first contact. No intermediate step for hesitant visitors.

Technical analysis

Loading time: 3.8 seconds on mobile. PageSpeed score: 42/100. Supreme irony: a site promising speed was itself slow. On mobile, 58% of visitors left before complete loading.

Content analysis

The site talked about "professional sites" and "quality" without ever showing results. No concrete examples, no client cases, no figures. Generic promises that looked like any competitor's.

The strategy: making the promise credible

We proposed a redesign centered on one objective: make the "72 hours" promise concrete and credible at every stage of the visitor journey.

Restructuring around proof

New architecture centered on results:

  • Homepage with delivered sites counter and interactive portfolio
  • "How it works" section with detailed 72-hour timeline
  • Video testimonials from clients with their sites in context
  • "Satisfied or redone" guarantee prominently displayed

Every claim is now accompanied by tangible proof.

Creating adapted conversion points

Instead of a single quote form, we created multiple entry points based on engagement level:

  • Project simulator (main conversion) - "See your site in 30 seconds"
  • 15-minute discovery call (hot prospects)
  • "Preparing your web project" guide (cold email capture)
  • Live chat for quick questions

The simulator became the game-changer: the visitor enters their industry and instantly sees examples of similar sites created in 72h. Immediate engagement, visual proof.

Technical redesign

Migration to a modern Next.js architecture. Loading time reduced to 1.1 seconds. PageSpeed score: 98/100. The site itself becomes proof of site72h.fr's technical expertise.

Content strategy

Creating content demonstrating expertise:

  • Portfolio with 50+ achievements categorized by sector
  • Detailed case studies (before/after)
  • Comprehensive FAQ on the 72h process
  • Blog with web advice for entrepreneurs

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Results after 4 months

The numbers speak for themselves.

Leads generated: 12 → 38 per month (+217%)

Conversion rate: 0.4% → 1.27% (×3.2)

Simulator usage: 340 simulations/month (62% of conversions)

Organic traffic: +65% thanks to new content

Average time on site: 1min45 → 4min20

Bounce rate: 68% → 35%

The project simulator represents 62% of conversions. Visitors who use it convert 5 times more than others.

What made the difference

Proof before promise. "Sites in 72h" isn't enough—you need to show the sites created, satisfied clients, and the detailed process.

The interactive simulator. Transforming a passive visitor into an active participant. Seeing "their" future site creates immediate emotional engagement.

Message consistency. An ultra-fast site to sell fast sites. Technical performance itself becomes a sales argument.

Progressive conversion points. Not everyone is ready to request a quote. The simulator and guide capture prospects at different maturity stages.

Applying this approach to your business

The site72h.fr case illustrates a universal principle: your website must embody what you sell. If you sell speed, be fast. If you sell quality, show quality. If you sell expertise, prove it.

We design conversion-oriented websites, from initial audit to continuous optimization.

Your site generates traffic but few leads? Let's analyze your situation. A 30-minute diagnosis can reveal the blockers hindering your conversion.

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