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In the dynamically growing world of e-commerce, brands are starting to understand the conversion rate optimization or CRO is not an option any more, but rather is a core necessity for companies in the online realm. If you are a Shopify owner, it is important for you to focus on partnering up with the right CRO agency that can really assist you with driving sales and taking your growth to the next level. Studies and research have shown that France has become one of the most innovative hubs for conversion rate optimization firms, with each offering its own unique set of expertise that is helping brands truly leverage their true potential with minimal work.

This article explores the top 6 French Shopify CRO agencies along with their specialities, including how they can effortlessly help you and your business scale:

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1. Jolly Commerce

Website: JollyCommerce.io

JollyCommerce is another French CRO agency that has been known for optimizing e-commerce conversions rates with their in-house AI-powered personalisation tools that go hand in hand with their data-driven A/B testing. This agency is able to help those online retailers with enhancing their online presence, and customer journeys with the itnent of increasing their average order value and boost their revenue with unique and tailored solutions.
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Image showing Jolly Commerce

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Why Choose JollyCommerce?
- AI-driven personalisation for a unique shopping experience
- Advanced A/B testing & UX analysis
- Expertise in Shopify, Magento, and WooCommerce
- Proven track record of increasing e-commerce sales

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2. The Deployer: The A/B Strategy

Website: https://www.the-deployer.fr/

A/B testing so intense, it’s basically a blood sport. The Deployer doesn’t play nice—they dissect your site like an animal in a biology lab. Reviews are a crucial element to your store's site, and Deployer can help you with the right placements for your reviews to create authenticity and boost conversion rate optimization marketing.

  • Client Wins That Hurt (Works In a Good Way):
    • BOKU: Their sports supplements were drowning in a sea of “Buy Now” buttons. The Deployer tested urgency tactics (“Only 3 Left!”) and watched add-to-cart rates soar.
    • Fleet: E-bike shoppers were ghosting at checkout. Solution? Ditch the clunky forms, add trust badges, and boom—cart abandonment dropped significantly.
  • Their Dark Magic:
    • They have conducted over 400 A/B tests.

For Brands Who: Want results, not hand-holding.

Image showing Deployer 400 A/B

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3. Falia Growth Marketing: The CRO Speed Sorcerers

Website: https://falia.co/en/cro-agency/

Let’s face it: Your site’s slower than a snail carrying a baguette. Falia? They’ll turn it into a TGV bullet train.

  • Case Study:
    • A skincare brand’s product pages took 5 seconds to load. Falia hacked it down to 1.2s by providing custom themes and lazy-loading images for driving traffic. Conversions? Up significantly
  • Their Voodoo:
    • Shop Pay Integration: Checkouts so smooth, customers don’t even realize they’ve paid.
    • Mobile-first designs that make your audiences, of all ages, want to interact with your website even more
    • Choose Them If: Your site feels like dial-up in a 5G world.
Falia CRO Agency and Landing Page

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4. Swanky: The CRO Rebels

Website: https://swankyagency.com/

Swanky doesn’t follow rules—they break them. Fresh off winning CRO Agency of the Year, they’re the pirates of Shopify optimization.

  • Rumored Client Shenanigans:
    • A secret luxury brand let them test a “bundles-only” homepage. AOV doubled. Chaos ensued.
    • They have worked with leading stores including Huel, Eden Project and over a hundred more.
  • Their Vibe:
    • Proposals that skip buzzwords and go straight for the kill shot.

For Businesses That: Want to yeet their comfort zone and see good results

Image showing Swanky CRO Agency

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5. Dedi Agency: The Shopify Plus CRO Samurais

Website: https://www.dedi-agency.com/

Shopify Plus is a beast. Dedi? They’re the samurais who’ll tame it for you.

  • Client Battles Won:
    • Facom: Industrial tools buried in a labyrinthine menu? Dedi overhauled navigation for B2B buyers. Repeat purchases spiked unlike ever before.
    • Beauty Distribution: Built a multilingual site that made EU traffic double faster than most websites usually lode.
  • Their Edge:
    • They offer custom integrations tailored to any firm or requirements.

Pick Them If: Your store’s big and seeking multiple conversion channels to optimise your growth.

Image showing Dedi Agency for CRO

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6. Lamour du Shop: The UX Cupids

Website: https://lamourdushop.com/

Lamour du Shop doesn’t design stores—they craft love stories between brands and customers.

  • Client Fairytales:
    • A bakery’s site was so visually delicious, bounce rates dropped 50%.
    • Trained a fashion retailer to run A/B tests solo—no techies needed. Simple to use and provided them with the ability to understand and re implement whenever needed.
  • For Brands That: Want to DIY… but with training wheels.
Image showing Lamour Agency for CRO 

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7. Start & Brand

Site: startandbrand.com

  • Client Drama to CRO Triumph:
    • Musc Intime: Struggling with bland product pages? Start & Brand swapped sterile descriptions for sultry, mood-lit copy. Sales jumped significantly
    • Puget: Their products were lost in a sea of generic listings. Heatmaps revealed customers hated the cluttered layout. A minimalist redesign slashed bounce rates by almost 50%.
  • Why They’re Formidable:
    • They’ll A/B test anything—even the shade of your “Add to Cart” button (Turns out, burnt orange > neon green).
    • Their “Turbocharge” audit? It’s like espresso for your site speed. Ensuring customers are retained and not lost.

Pick Them If: You want your store to feel like a Paris fashion show, not a garage sale.

Image showing CRO landing for Start & Brand

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Conclusion: Choosing the Right CRO Agency for Your Shopify Store

When it comes to actually selecting the CRO agency that is an ideal fit, it can be challenging but taking your time is crucial to ensuring that your Shopify store is able to grow the way you envision it. Regardless of whether your brand needs a comprehensive branding strategy or mere web designs to get started, with the right A/B testing or custom themes, these agencies have the ability to take your e-commerce performance to the next level.

Why waste hours on in-house development, when all you need is to find the right partners who can take the lead.

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