Company lists · Data refreshed September 2026
Top 25 Conversion rate optimization agencies based in France
RevenueBase identified 147 conversion rate optimization agencies headquartered in France as of September 2026 and tracks 647 professional contacts across them, including 223 with verified work emails and 36 with mobile numbers. Paris is the largest hub.
This list covers conversion rate optimization agencies headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 3, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest conversion rate optimization agencies based in France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 42 contacts → | ||||
Indirect evidence “Digitalisim est un groupe d’experts qui œuvrent sans relâche pour vous apporter les derniers technologies du web marketing en lien avec votre secteur d’activité.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 40 contacts → | ||||
Strong evidence “Webyn is the AI co-pilot dedicated to online conversions optimization, offering a complete solution to propel your website to success.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 36 contacts → | ||||
Strong evidence “BEYABLE's AI-powered solution suite enables E-Commerce and Retailers to maximize the value of their website traffic- Boost conversion rates - Increased margins - Stock clearance -…” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 31 contacts → | ||||
Partial evidence “L'agence Oscar Black conçoit et pilote des stratégies d'acquisition et de conversion pour entreprises exigeantes.#agencedigitale #webmarketing #googleads #facebookads…” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 23 contacts → | ||||
Partial evidence “E-commerce sales increase only 2 ways: 1) Massive ads spend with lesser conversion.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 17 contacts → | ||||
Indirect evidence “Welyft is a data-marketing agency that helps brands deliver an exceptional customer experience through data & experimentation (A/B testing, personalization, user testing, UX…” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 17 contacts → | ||||
Indirect evidence “Agence conseil en référencement Web et en e-commerce, Velcome SEO accompagne les entreprises dans l’élaboration et la mise en œuvre de stratégies d’acquisition client à travers le…” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 16 contacts → | ||||
Indirect evidence “Henkan & Partners est un cabinet spécialisé en Product Analytics et Expérimentation.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 15 contacts → | ||||
Indirect evidence “C’est en associant l’expertise de ses analystes avec la puissance de son algorithme qu’AdsRank vous permet d’optimiser vos campagnes Google Ads, afin d’obtenir le maximum de clics…” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 14 contacts → | ||||
Indirect evidence “Céos is the growth agency for e-commerce.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 14 contacts → | ||||
Indirect evidence “Chez Digitalised, nous avons l’art de trouver la croissance où elle se trouve.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 contacts → | ||||
Indirect evidence “Adenlab est spécialisée dans l’optimisation Analytics, la gestion du trafic & campagnes sponsorisées des marques et e-commerces.#ecommerce #strategiedigitale #google #googleads…” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 13 contacts → | ||||
Indirect evidence “Exploseo a été fondée pour les entreprises en quête d’efficience publicitaire, nous sommes passionnés par la performance marketing.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 12 contacts → | ||||
Partial evidence “Nous aidons les marques à multiplier les opportunités de conversion, vente et lead sur leur site internet, sans aucun développement additionnel.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | 8 contacts → | ||||
Indirect evidence “Depuis 10 ans Altics teste et optimise les sites marchands.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 7 contacts → | ||||
Indirect evidence “We are Growth Marketing experts.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | 6 contacts → | ||||
Indirect evidence “Notre mission est de faire grandir les organisations et les équipes.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 contacts → | ||||
Indirect evidence “Fort de nos 13 années d'expérience, nous avons acquis la certitude que le CRO est un gigantesque générateur de valeur accessible à toutes les organisations.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Indirect evidence “Vous avez des besoins en SEO (référencement naturel) et CRO (marketing comportemental).” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Indirect evidence “Api Growth est une agence spécialisée dans les problématiques d’acquisition de trafic et de mesure de la performance (SEO, SEA, Analytics et CRO).” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Indirect evidence “Après plusieurs millions d'euros dépensés sur différentes plateformes publicitaires, nous avons compris qu'une bonne stratégie d'achat média ne vaut rien sans une bonne stratégie…” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Indirect evidence “Clickway est l'agence 360 incoutournable en matière de tendance en web marketing en 2025.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Indirect evidence “Happy Traffic vous accompagne dans votre acquisition de trafic à la performance et dans la transformation de vos prospects en clients!” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Indirect evidence “Notre agence de marketing digital se consacre à aider les entreprises à atteindre leurs objectifs de croissance.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Partial evidence “Growing your Conversion and Customer Life Time Value is vital as the cost of media is booming.” Source: RevenueBase Database · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: conversion rate optimization agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names conversion rate optimization agencies.
- Partial evidence
- Its own public description names part of conversion rate optimization agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name conversion rate optimization agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 147 conversion rate optimization agencies based in France
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Conversion rate optimization agencies based in France at a glance
As of Sep 3, 2026Companies by employee count
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among conversion rate optimization agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in France whose own description of what they do matches “conversion rate optimization agencies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names conversion rate optimization agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among conversion rate optimization agencies, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 223 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 3, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Conversion rate optimization agencies by metro
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names conversion rate optimization agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many conversion rate optimization agencies are there based in France?
RevenueBase identified 147 conversion rate optimization agencies headquartered in France as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Digitalisim, headquartered in Lyon, tops this list with the largest team on record.
Which city has the most conversion rate optimization agencies?
Paris leads with 57 headquartered companies, followed by Lyon (10) and Nantes (7).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 223 verified decision-maker contacts tracked across these 147 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 3, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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