Custom theme

A theme in your image,
not a repainted template.

An off-the-shelf theme looks roughly like you, with fifty options you will never use and a weight that slows everything down. A custom theme starts from your brand and your buying journeys, and ships only what helps sell. I design it and install it on your store, PrestaShop first, but also WooCommerce or Shopify, without changing anything in the software itself: your updates stay plain updates.

5,0/5 · 66 verified reviews 50+ projects shipped 10 years of experience
In detail

The work starts with the pages that make the revenue: the product page, the category, the cart and the checkout. They are designed first, as mock-ups, with your real products and your real photos; a theme designed on placeholder text falls apart at the first product name that runs too long. The home page comes after, not before.

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At build time, each platform has its proper way: a child theme on PrestaShop and WordPress, a theme that rests on the original without changing it, and a clean Liquid theme on Shopify, its own format. In every case the core of the software is untouched and every adaptation is documented. The CSS, the code that shapes the pages, is written by hand, with no ready-made thousand-class library; fonts are capped at two, images served at the right size and format.

The result is measured, not promised: a score above 90 on mobile Lighthouse, Google's measuring tool, on the delivered pages, and navigation that works with a keyboard and a screen reader. You receive the theme, its sources and a one-page guide to run it from the admin, colours, banners, home blocks, without coming back to me.

Features

What you get.

01

Designed on your products

Mock-ups built with your products and your photos, not placeholder text. Product page and checkout first, home page after.

02

Three platforms, one method

Child theme on PrestaShop and WordPress (a theme resting on the original without changing it), Liquid theme on Shopify, its own format. The core of the software is never touched.

03

Light, and measured

Hand-written styling code, two fonts at most, images at the right size. A score above 90 on Google's measuring tool (mobile Lighthouse), checked before delivery.

04

Readable by everyone

Contrast, keyboard navigation, form labels: the theme meets the French accessibility rules (RGAA) that matter for a store.

05

No risk to your updates

No file of the software itself is touched, and every adaptation is documented: the next version doesn't break your theme.

06

Run it without me

Colours, banners, home blocks adjustable from the admin, with a one-page guide.

07

Ready for several languages

Translatable text, a layout that holds when German runs twice as long as French.

08

Sources delivered

The theme, its sources and its documentation are yours. Another integrator can take it over.

Method

How we proceed.

01

Scoping

Your buying journeys, your ranges, your brand constraints. We list the templates to design, rarely more than eight.

1 week
02

Mock-ups

Product, category, cart, checkout, then home. Mobile and desktop, with your real content.

2 to 3 weeks
03

Build

On a copy of the store, in the form that suits your platform. Speed and readability measured as we go.

3 to 5 weeks
04

Acceptance and go-live

You test on your real cases, then a switch with no downtime and the hand-over guide.

1 week
Real cases

A few examples.

01

Fine grocery, PrestaShop 8

Eight templates, product page rebuilt around pairings and bundles. The Google speed score (mobile Lighthouse) went from 41 to 94.

02

Clothing brand, Shopify

Custom theme in Shopify's own format (Liquid), size guide built into the product page, lookbook managed from the admin.

FAQ

Frequent questions

How much does a custom theme cost?
Between €3,500 and €12,000 excl. VAT depending on the number of templates and the CMS: an eight-template PrestaShop store sits in the middle. Fixed price, set after scoping.
Why not an €80 premium theme?
It's often the right choice to start. It stops being one when you spend your time working around it, or when its 400 KB of scripts weigh on your mobile conversions.
Do you also do the design, or only the build?
Both, or the build alone if you already have mock-ups. In that case I review them with you first: a screen designed without the CMS in mind is expensive to build.
Will the theme hold up on the next CMS version?
Yes, if built by the rules: a child theme — a layer that leaves the original untouched — and documented changes, which is the case. A major upgrade may need an adaptation, quoted separately.
What about SEO during the redesign?
Your page addresses don't move, the information Google reads on each page is carried over or improved, and I compare your rankings before and after the switch.
Let's start

Ready for your project?

Free quote within 48h. Response within 24h. No commitment.