Custom Website Design
Every JSEM Production website is designed with three non-negotiable objectives in mind: to load in less than 2.5 seconds, to convert visitors
into qualified leads, and to dominate the top Google positions on your strategic business queries.
Why your website determines your growth
Creating a website is not an expense. It’s a business asset that works 24/7 – or doesn’t work at all if poorly designed. In Andorra as in France, the majority of existing business websites accumulate the same mistakes: loading times in excess of 4 seconds that drive away 53% of mobile visitors, a non-existent semantic architecture that condemns the site to invisibility on Google, and a total absence of conversion strategy that turns an investment into a useless fixed cost.
At JSEM Production, every website creation starts from the opposite premise: technical performance, SEO optimization and conversion strategy are not options added after the fact – they’re integrated from the very first line of code, from the very first architectural decision.
The result: professional websites that generate qualified contacts within the first few weeks of going online.
Our website creation solutions
Four types of project, one common requirement: zero templates, zero subcontracting, zero approximations. Each solution is tailored to your industry, your positioning and your growth objectives.
Professional showcase site
The showcase site is the reference tool for presenting your activity, legitimizing your expertise and converting a prospect into a qualified contact. We create showcase sites structured around a semantic cocoon, with a content hierarchy designed for natural search engine optimization and a customized design aligned with your positioning.
Average lead time: 3 to 5 weeks.
Range: €1,000 to €3,500.
Custom e-commerce site
An e-commerce site that converts is a precise mechanic: optimized purchase tunnel, structured product sheets for SEO, loading time under 2 seconds on mobile, secure payment integration. We develop on WooCommerce and Shopify according to your volumes and sales ambitions.
Average lead time: 5 to 8 weeks.
Range: €2,000 to €5,000.
Tailor-made premium site
For companies that refuse to look like their competitors. Advanced technical architecture, exclusive design developed in Figma, customized animations, Lighthouse performance in excess of 95. Every pixel is justified by strategic intent.
Average lead time: 6 to 10 weeks.
Range: €3,500 and up.
Website redesign
Your current site is losing leads without you even knowing it. A Lighthouse score below 60, disorganized architecture or outdated design are costing you Google positions and qualified contacts every month. We audit, restructure and relaunch your site with an airtight SILO architecture and optimized performance.
Methodology
Our 5-step methodology
No surprises, no budget drift. A process proven on 300+ projects, structured to deliver on time and to perform right from the start.
I. Strategic analysis & market audit
Before writing a line of code or creating a visual,
we analyze your market, your competitors and your target keywords.
This phase determines the site architecture, content strategy and semantic cocoon that will structure your Google visibility over the long term.
II. UX architecture & semantic cocoon
The architecture of a high-performance website follows precise rules. We structure thematic silos, internal meshing and page hierarchies according to current Google algorithms – Core Updates included. Users find what they’re looking for in less than 3 clicks. Google immediately understands your expertise.
III. Design & art direction
The Figma mock-up is submitted and validated prior to development. Every visual element – typography, palette, spacing, micro-animations – is designed to reinforce your positioning and maximize your conversion rate. No templates. No generic elements.
IV. Core Web Vitals optimized development
WordPress or custom development depending on the project.
Systematic optimization of Core Web Vitals: LCP less than 2.5 seconds, CLS less than 0.1, FID less than 100ms. WebP images, minified code, advanced caching, high-performance hosting. Mobile Lighthouse Score over 85 on delivery.
V. Integrated SEO & launch
Extensive Schema.org / JSON-LD markup, optimized title and meta tags on every page, validated structured data structure, XML sitemap submission to Google Search Console, Rank Math Pro configuration. The site is indexable and efficient from day one.
Website design by business sector
Industry experience reduces lead times, improves content relevance and accelerates SEO.
We know the keywords that convert in your field, the features your customers expect and the E-E-A-T signals Google values in your sector. 60+ projects delivered – these are the sectors where our expertise is proven.
10+ hearing centers supported. Local SEO architecture, online appointments, structured multi-site agency pages.
Integrated booking engine, immersive galleries, online payment and reservation
Online menu, integrated reservation, Google Maps local SEO. Designed to convert a local search into a reserved place setting.
Online booking, immersive gallery, seasonal and off-season referencing. 3 Côte d’Azur boat rental references.
Local SEO by city, integrated quote form, construction gallery.
WooCommerce or Shopify depending on volume, optimized shopping tunnel, structured product sheets for SEO.
Online appointment booking, team presentation, local SEO veterinary practice.
Compliance with medical regulations, Doctolib-compatible appointment scheduling, presentation of surgeons and specialists.
Direct online sales, estate storytelling, reduced dependence on intermediary wine merchants.
Integrated ads, luxury villa rental with direct booking, reduced platform commissions.
Online ticketing, registration management, event planning.
Online appointment booking, presentation of treatments and prices, competitive local SEO.
What each JSEM Production site includes
① Score Lighthouse Performance > 85 on mobile upon delivery
② LCP (Largest Contentful Paint) < 2.5 seconds
③ 100% bespoke design – no templates sold to other customers
④ SEO integrated from the design stage – title, meta, JSON-LD, semantic cocoon
⑤ Perfect responsiveness on all formats (mobile, tablet, desktop)
⑥ Functional contact form tested before delivery
⑦ Back-office training included
⑧ Post-launch follow-up – 30-day performance monitoring included
Frequently asked questions about website creation
How much does it cost to create a website?
A professional showcase site starts at €1,500. A customized e-commerce site is between €2,500 and €5,000. A customized premium site can exceed €5,000. Our price simulator gives you a personalized estimate in 2 minutes at jsemproduction.com/simulateur-prix-site-internet/.
How long does it take to create a website?
A showcase site is delivered in 3 to 5 weeks. An e-commerce site takes 5 to 8 weeks. These times include layout, development, testing and SEO optimization.
Why integrate SEO into website design?
We integrate the semantic cocoon, JSON-LD markup, Core Web Vitals and title and meta tags right from the architecture phase. A site built without SEO would have to be rebuilt 6 months later at twice the cost.
Do you use WordPress templates?
No. Each site is custom-designed in Figma before development. No JSEM Production design is sold to multiple customers.
Do you offer post-launch support?
Yes, we offer monthly maintenance contracts including security updates, daily backups and performance monitoring. A 30-day post-launch follow-up is included in every project.
Start your website creation project
Describe your project in a few lines. We’ll analyze your market and competitors, and submit a strategic proposal with a precise budget – within 24 hours.