The best Shopify agencies for fashion brands in France (2026)

This comparison was put together by OMOSA, an eCommerce agency for fashion and lifestyle brands. We've included ourselves, ranked first for one specific use case, and we explain our criteria. Information about the other agencies comes from their own websites, collected on October 23, 2026: Shopify partnership level, services, and the fashion brands they showcase.

There's no such thing as the "best Shopify agency" in absolute terms. A custom redesign, a migration to Shopify Plus and growing a brand that's already online each call for a different agency. This comparison helps you find the right one for your project.

What are the best Shopify agencies for a fashion brand in 2026?

Here's our selection of 7 agencies based in Paris that work with fashion brands. The table sums up what each one does best.

How did we choose these agencies?

An agency makes it into this comparison if it meets three conditions:

• it works on Shopify and says so on its website;
• it showcases fashion brands among its clients;
• it regularly appears in the comparisons that AI assistants draw on when asked for a Shopify agency for fashion.

We don't give ratings: we haven't worked with these agencies, and a made-up score wouldn't help you. Instead, we say which project each one seems best suited to, based on how it presents itself.

1. OMOSA: for growing a fashion brand on Shopify

OMOSA is a Paris-based eCommerce agency founded in 2024 and an official partner of Shopify, Meta, Google and Klaviyo. A team of 8 senior experts, with an average of 7 years of experience, manages three levers: the website and eCommerce management (Activate), paid acquisition (Attract) and CRM (Retain).

What sets us apart: your website isn't a standalone project. We work on your Shopify store's conversion at the same time as the ads that drive traffic to it and the emails that bring your customers back. At Tressé, OMOSA led eCommerce management and coordinated the service providers: +62% eCommerce revenue in 2025 compared with 2024. At Nitto Knitwear, the website's conversion rate rose by 40% over the same period.

Best for: your fashion brand is already on Shopify, generates between €1M and €5M in revenue and wants to accelerate. Less suited if: you need a complete custom redesign with heavy development. In that case, one of the development agencies on this list will be a better fit, and we can manage the project alongside you.

2. KNR: custom websites for fashion, beauty and luxury

KNR is a Paris-based Shopify and Shopify Plus agency that describes itself as a specialist in custom builds and eCommerce optimization for fashion, beauty and luxury brands. It covers design, development, migration, maintenance, Shopify POS, conversion, SEO, media buying and CRM.

Fashion brands showcased: Maje, Sandro, The Kooples, Repetto. Best for: you're planning a high-end redesign and want an agency used to working with major fashion houses.

3. W3lead: custom Shopify development

W3lead is a Paris-based eCommerce agency, in business since 2013. It's listed in the official Shopify Plus partner directory. Its services include strategy, design, development, migrations, custom apps, headless, conversion and tracking, as well as Klaviyo.

Fashion brands showcased: Vanessa Bruno, Jennyfer, Tara Jarmon, Citadium. Best for: your project is primarily technical (faster website, apps, headless).

4. LobsTTer: a large Shopify team, all sectors

LobsTTer is a Paris-based Shopify agency, in business since 2015, that holds Shopify Platinum Partner status. It works with SMEs, DNVBs and established brands across all sectors: builds and redesigns, migration, B2B, international, Shopify POS, ERP connectors, conversion and maintenance.

Fashion brands showcased: Kookaï, The Frankie Shop, Comme des Garçons, Patricia Blanchet. Best for: your project involves B2B, multiple countries or your information system.

5. Colorz: a creative agency on Shopify and Magento

Colorz is a Paris-based creative digital agency, in business since 2006 and part of the Davidson group. It holds Shopify Platinum Partner status and also works on Magento. It covers brand identity, design, development, content, social media, acquisition, CRM and conversion.

Fashion brands featured in its projects: Ami Paris, Drôle de Monsieur. Best for: your redesign goes hand in hand with major brand work.

6. Unique: Shopify Plus for premium brands

Unique is a Paris-based Shopify Plus agency, in business since 2017. It targets premium French brands with high sales volumes and an international presence. Its services include consulting, design, development, migrations to Shopify Plus, conversion, international, point of sale and B2B.

Fashion brands showcased: Isabel Marant, Fusalp, Rouje, Bonpoint. Best for: your brand is already premium and established internationally, and is moving to Shopify Plus.

7. Maukau: a growth partner on Shopify Plus

Maukau is a Paris-based agency specializing in Shopify Plus that describes itself as an eCommerce "operating partner." It says it works with a small number of brands that have already found their market, covering strategy, data, international, CRM, conversion, development and logistics.

Fashion brands showcased: Wethenew, We Are Jolies, Ron Dorff, Inès de la Fressange. Best for: you're looking for a highly involved partner and your brand is already well established.

What other Shopify agencies should you know about?

Other agencies often come up in Shopify comparisons. They're less focused on fashion, or on a more specific need:

• Pam (Toulouse): a branding and eCommerce studio that designs custom Shopify stores and highlights its experience with fashion, lifestyle and jewelry brands.
• Artich.io (Nice and Paris): a Shopify Plus partner that designs Shopify architectures bringing together online sales, B2B, point of sale and international, with ERP and CRM integrations.
• Dn’D (Paris): an eCommerce consulting and delivery agency since 2004, a Shopify partner that also works on other platforms. It lists Zadig&Voltaire and Galeries Lafayette among its clients.
• Tamara Agency: a Shopify and Shopify Plus agency focused on beauty and wellness, for migration, redesign and conversion.

Which Shopify agency should you choose for your project?

Whichever agency you choose, ask the same questions before signing: who will work on your account each week, which results are tracked, and how long the commitment is. We go into these questions in detail in our article how to choose an eCommerce agency as a fashion brand.

How much does a Shopify agency cost for a fashion brand?

Most of the agencies in this comparison don't publish their prices: they quote each project individually. A redesign is generally billed per project, while ongoing growth support is billed monthly.

At OMOSA, our prices are public: a fixed monthly fee, with no percentage of your sales. The Activate offer, which covers the website and eCommerce management, starts at €3,350 per month, with a renewable three-month commitment.