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Business Agile
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Website redesign and marketing website development Website redesign

A fast website that search engines and AI assistants can read, and that you will not have to rebuild in two years

I redesign existing websites and build prerendered marketing sites, designed for search from the first line of code. I also handle what hurts during a WordPress migration: old URLs, redirects and the pages that used to bring traffic.

Describe my project

Why redesign a website that still works?

A website can look fine and still be invisible. That was the case with the second version of Antiquité Mallarmé: the content was good, but the site was rendered in the browser. Every page shared the same title and description, and structured data was injected afterwards, so it was missing from the HTML most crawlers read. The redesign prerendered each page at build time, with its own title, description, canonical URL and structured data.

A redesign also makes sense when a site costs more than it brings: WordPress plugins to update every week, slow pages on phones, a contact form that lands in spam. If your site is fast, well ranked and easy to edit, I will tell you so, and I will not offer to rebuild it.

How I migrate a WordPress site without losing rankings

I start with data, never with intuition: the old sitemap, the pages that actually get clicks in Search Console, the backlinks measured in Ahrefs. For Ti Kosmeo, that inventory gave 19 mapped WordPress pages and 55 permanent redirects, written one by one in the server configuration. Useful images were brought over, and booking affiliate links were kept byte for byte so commission tracking did not move.

Every new page gets its final address from day one, including in English when the site is bilingual: renaming an indexed page costs a redirect to maintain forever. I then check online, URL by URL, that old addresses answer with a permanent redirect and new ones answer directly.

Fast pages, measured on a real phone

The score that matters is the mobile one, not the desktop one. On Antiquité Mallarmé, the home page went from 52 to 75 on mobile PageSpeed, and accessibility from 96 to 100, without touching the design. On Ti Kosmeo, the home page went from 62 to 90. On Maison Ozaé, a photo heavy wedding portfolio, the home page went from 67 to over 80 without lowering image quality.

The levers are always the same and I apply them every time: one copy of each image per screen width, generated at build time, self hosted and preloaded fonts, measurement scripts loaded after the first interaction, and properly tuned server compression. I measure three times, on the version actually served, before quoting a figure.

Technical SEO and GEO: be found, then be quoted

Every site I deliver has a unique title and description per page, a canonical URL, an automatically generated sitemap, a robots.txt decided with you, and structured data suited to each page type: organisation, service, frequently asked questions, breadcrumb. Maison Ozaé has 59 prerendered pages, each with its own tags, in French and English.

Answer engines such as ChatGPT, Perplexity or Claude do not read websites the way Google does. They reuse self contained paragraphs, clear definitions and dated facts. I structure content that way, add an llms.txt file and help you decide which AI crawlers to allow.

How many pages, and how does the project run?

I build sites where each page answers a single question a visitor types into a search engine. Antiquité Mallarmé is not just a home page: the site has one page per family of appraised objects (paintings, silverware, antique jewellery, watches, fireplaces, Chinese vases) and one page per type of house clearance, for 23 addresses in its sitemap. Ti Kosmeo has one page per workshop, with its reviews and related workshops. Each page gets enough text to be indexed and quoted, and links to two or three neighbouring pages, with anchors that describe the target page.

The project always follows the same steps. We start from a mockup, yours or one we build together. I then fix the list of pages and their final addresses, in French and English if the site is bilingual, and write or rework the content with you. The site first lives on a staging address, closed to search engines by a dedicated header, where you review everything. After launch, I check redirects, tags and speed on the public version, and submit the sitemap to Search Console.

What you get, and what I do not do

You get a static site served by nginx behind a proxy that handles HTTPS, with no database to hack and no plugin to update, a contact form relayed by a small API that sends messages through Brevo with bot protection, and legal pages that actually name the host and providers. The code belongs to you and lives in a Git repository.

I am not a graphic design agency: I work from an existing mockup, your brand guidelines, or a mockup we build together. If you want to edit your own copy every day without going through me, a well maintained WordPress site is sometimes still the best choice, and I will say so.

Projects delivered in this area

tikosmeo.fr
Home page of the Ti Kosmeo website, natural cosmetics workshops in Boulogne-Billancourt
Web · Sep 2026

Ti Kosmeo

A workshop brand's WordPress site rebuilt as a fast website, keeping rankings and bookings intact.

Perf92A11y94SEO100LCP1.1 s
tikosmeo.frSep 2026
antiquitemallarme.fr
Home page of the Antiquité Mallarmé website, antiques dealer and valuations in Saint-Ouen
Web · Sep 2026

Antiquité Mallarmé

Three generations of website for a Saint-Ouen antiques dealer, from client rendering to static prerendering.

Perf99A11y100SEO100LCP0.8 s
antiquitemallarme.frSep 2026
Web · Sep 2026

FabArto

A holding page tooled like a full website, ready to become an artist's portfolio.

Perf86A11y100SEO100LCP2.5 s
fabarto.euSep 2026
scienceprotect.com
ScienceProtect home page, scientific monitoring for food safety
AI · Oct 2025

ScienceProtect

APIs, data pipelines and a knowledge graph to track food science.

40 millionstudies tracked (figure published by the client)607automated tests on the Who's Who API (team)
scienceprotect.comOct 2025
maisonozae.eu
Home page of the Maison Ozaé website, wedding photography and film
Web · Jul 2025

Maison Ozaé

A bilingual wedding portfolio that stays fast with nearly 4,000 photographs.

Perf79A11y84SEO100LCP3.2 s
maisonozae.euJul 2025
E-commerce · Mar 2025

Pousses & Plantes

A WordPress marketplace made ready for the traffic peak of a France 5 appearance.

France 5TV report prepared for in 202523WordPress plugins industrialised
Plant marketplaceMar 2025
Web · Feb 2025

Arbre Agile

The bilingual website of the group's AI studio, backed by an API and a knowledge graph.

50 / 53front end commits written by me2languages, one URL each
Artificial intelligence consulting and developmentFeb 2025
Web · Nov 2024

Groupe BERREBI

The holding's corporate website, with companies, brands and legal details drawn from a single source.

2versions of the site since 20245companies described from a single source
Holding company and corporate websiteNov 2024

Frequently asked questions

Does a website redesign lose search rankings?

Not if it is prepared. Losses almost always come from old addresses that return an error. I start from the real inventory of pages that receive visits and links, write a permanent redirect for each one, then check online after launch. On Ti Kosmeo, 55 old WordPress addresses were redirected that way.

Should I leave WordPress for a marketing website?

Not necessarily. WordPress works well if you edit content often and on your own. A prerendered site becomes worthwhile when speed, security and search matter more than daily editing: no exposed database, no plugin to update, pages served as complete HTML. I look at how you actually use the site before recommending either.

What is a prerendered website?

It is a site where every page is turned into complete HTML at build time, not in the visitor's browser. Search engines and AI crawlers therefore read all the content, titles and structured data without running JavaScript. The result deploys as plain files, fast to serve and hard to attack.

Do you work with companies outside France?

Yes. Business Agile is based in Boulogne-Billancourt, near Paris, and I work with clients in France and elsewhere in Europe. Most of the work is done remotely, with meetings in person when useful, for example for scoping or the final review before launch. Sites can be delivered in French and English.

A project? Let's talk this week.

A short brief, an answer within 48 hours, a firm estimate after scoping.

Describe my project