Web & AI

Web agency in Paris: sites, business tools and AI agents

Websites, digital experiences, internal tools and custom AI agents. More than 400 projects since 2008, and the source code is handed over to you.

More than 400 projectsSince 2008Source code handed overBuilt to order
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Three kinds of project

What we build

01

Websites & web applications

Corporate sites, product sites, booking and quotation flows, client areas. Built for speed and for search engines from the first line rather than optimised afterwards — the two are the same work.

02

Internal business tools

The tool that replaces the spreadsheet everyone edits at once. Planning, tracking, quoting, stock, reporting — built around how your team already works instead of the other way round.

03

Custom AI agents

An agent that does one job on your data: triaging email, reading documents, answering from your own knowledge base, preparing a file before a human signs it. Connected to your systems, with limits you set.

How we work

Four commitments, written into the quote

Built to order

No theme bought and reshaped. What you need is built; what you do not need is not there to slow the page down.

The code is yours

Source handed over and documented, hosting in your name. No licence to keep paying, and another developer can take over.

Indexable on day one

Server-rendered pages, structured data, clean URLs and a sitemap from the first deployment — including for AI answer engines, which read the same signals. Explore our development, SEO and GEO method.

Measured

Analytics without cookies, so there is no consent banner and the numbers are still yours. You see what people actually do, not what a dashboard assumes.

How a project runs

A team present at every stage

Technical production is express ⚡, with the checks and tests each stage requires. The project can nevertheless extend over several weeks: reviews, exchanges and approvals are part of its schedule. Your project lead supports you from scoping onwards and helps you put your feedback into words. The same people stay involved until the project goes into service.

A project ready to move?

Goals set, content ready: we can start express technical production ⚡, sometimes the same day. Your project lead organises reviews and approvals with you around your availability.

Discuss your deadline →

The course of a project

⚡ Express production, a project at your pace

  1. 1 Conversation with your project lead You and your project lead clarify your goals, your needs and your first ideas.
  2. 2 Specification and agreement Scope, schedule and price are set out in the signed quote.
  3. 3 ⚡ Express technical production We build, test and fix the first version within the agreed scope.
  4. 4 V1 delivered You receive a first version to review before it goes live.
  5. 5 ❓ Review at your own pace Your project lead helps you put your feedback into words, whenever you are ready.
  6. 6 ⚡ Revisions produced Revisions are usually made within 24 hours, depending on what they involve.
  7. 7 V2 delivered You receive the corrected version to check the changes.
  8. 8 ❓ Further review if needed With your project lead, you pin down the final adjustments; the cycle repeats if needed.
  9. 9 Final delivery You approve the version that will go live.
  10. 10 ⚡ Go-live We run the final checks and publish, subject to external technical lead times.

Our technical production is express ⚡; how long the project takes also depends on its scope and on the exchanges along the way. The project can move at express speed if you do: quick feedback lets the stages follow one another without delay. If you need time to think, we follow your pace. Your project lead is with you from the first conversation and at every review.

Why it sits next to a production company

The content and the site are built by the same people

A product page needs photographs. A recruitment page needs a film. A training platform needs recorded voice. When those come from three suppliers, the schedule is set by the slowest one and nobody owns the result. Here the studios, the crews and the developers are the same company — which is the practical reason this discipline exists alongside the other three.

Frequently asked questions

What does a web project cost?
We work in engineering days rather than fixed packages, because two projects that look alike from the outside rarely need the same work underneath. An engineering day starts at €3000. What sets the total is the number of screens, the number of integrations with systems you already run, and whether the project needs content produced alongside it. A scoped estimate comes back within 24 business hours. Details on the budgets page.
What exactly is a custom AI agent?
A program that does one job inside your business, using your data, with your rules. Sorting and answering incoming email. Reading invoices and filing them. Answering customer questions from your own documentation rather than from the open web. It is not a subscription to a general assistant: it is built for one workflow, connected to your systems, and it stops where you tell it to stop.
Who owns the code?
You do. The source is handed over, documented, and it runs on hosting in your name. There is no licence to keep paying to keep your own site online, and no dependency on us to make a change — another developer can pick it up. We say it plainly because it is not the norm on this market.
Why work with a Paris agency rather than an offshore team?
For some work, you should not — a well-specified, self-contained build is cheaper elsewhere and that is a real answer. Where we are useful is when the project needs to be understood before it is built: a tool that follows how your team actually works, an agent that has to be right about your own data, or a site that has to carry content we also produce. Same time zone, same working language, and the specification gets written with you rather than sent to you.
Can you take over a site somebody else built?
Yes, and it is a large part of the work. We read what exists first and say what we find, including when the honest answer is that the existing build is sound and only needs three fixes. Rewriting something that works is a way to spend a budget, not a way to solve a problem.

A site, a tool or an agent to build?

Tell us the deliverable, the deadline and where it will be published. You get a recommendation and a budget within 24 business hours.

Discuss your project Call 06 60 40 01 23

Monday to Friday, 9am – 7pm · shoots and sessions around the clock, by appointment · studioleizart@gmail.com

Phone · SMS · WhatsApp 06 60 40 01 23 Quotes & project briefs studioleizart@gmail.com