Company lists · Data refreshed September 2026
Top 25 Conversion optimization agencies based in France
RevenueBase identified 557 conversion optimization agencies headquartered in France as of September 2026 and tracks 4,448 professional contacts across them, including 1,718 with verified work emails. Paris is the largest hub.
This list covers conversion 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 19, 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 optimization agencies based in France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 801 contacts → | ||||
Indirect evidence “As the original performance marketing agency, Performics converts consumer intent into revenue for the world's most admired brands.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 230 contacts → | ||||
Indirect evidence “Kameleoon empowers brands to build better products and digital experiences.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 213 contacts → | ||||
Indirect evidence “MEDIAVEILLE est une agence de conseil et de services de marketing online qui met en œuvre des stratégies de conquête et de fidélisation sur Internet.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 159 contacts → | ||||
Indirect evidence “Ad’s up est une agence spécialisée dans la création et l'optimisation de campagnes de liens sponsorisés sur les différents moteurs de recherche (Google, Yahoo et Bing) et réseaux…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 144 contacts → | ||||
Indirect evidence “De l’audit à la stratégie, de la stratégie à la tactique, et de la tactique à l’analyse, nous sommes au service de la performance de nos clients.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 102 contacts → | ||||
Indirect evidence “Since 2014, Dolead has been one of the leading players in customer acquisition across paid channels, powered by our unique AdTech and team of experts.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 96 contacts → | ||||
Indirect evidence “Spécialistes de l’affiliation et du marketing à la performance, nous transformons vos investissements en opportunités business.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 80 contacts → | ||||
Indirect evidence “Dataventure was born from the merger of two expert companies in digital acquisition, data & performance marketing: the Cardata Group and Adventure Conseil.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 80 contacts → | ||||
Indirect evidence “Fondée en 2003 par des professionnels du Marketing et du Data, Waisso est une agence digitale spécialisée dans l’optimisation du marketing client en alliant technologie, data et…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 79 contacts → | ||||
Indirect evidence “Créé par deux ex-Google, le groupe datashake accompagne les entreprises dans leur stratégie marketing digital et data, en France et à l'international.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 77 contacts → | ||||
Indirect evidence “Keyade, a GroupM company, is a leading consulting agency for digital performance.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 60 contacts → | ||||
Indirect evidence “Formerly a gaming studio, Addict Mobile is a performance marketing agency specializing in profitable User Acquisition for mobile and web since 2015.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 51 contacts → | ||||
Indirect evidence “Spark, accélérez votre acquisition.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 47 contacts → | ||||
Indirect evidence “Créée par des entrepreneurs reconnus depuis plus de vingt ans dans le marketing digital, Tagadamedia a pour mission de proposer à ses partenaires des solutions toujours plus…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 46 contacts → | ||||
Indirect evidence “Pôle Sales Intelligence du groupe Altares, nous sommes spécialisés en conquête digitale b2b au service de la performance commerciale des entreprises.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 41 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 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 40 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 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 39 contacts → | ||||
Indirect evidence “At Dataiads, we empower brands to succeed with Shopping ads everywhere.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 36 contacts → | ||||
Indirect evidence “Digitalkeys – Les compositeurs de votre symphonie marketing Depuis 2008, Digitalkeys orchestre la performance digitale des entreprises qui veulent transformer leurs ambitions en…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 32 contacts → | ||||
Indirect evidence “Une équipe d'experts impliqués en stratégie digitale pour - Vous conseiller tant sur le plan stratégique qu’opérationnel et vous faire gagner du temps- Augmenter la performance de…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 32 contacts → | ||||
Indirect evidence “Want to attract your target audience and increase the number of your happy clients?” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 26 contacts → | ||||
Partial evidence “Kamp'n is the essential management and optimization tool for all agencies and advertisers wishing to adopt data-driven marketing for Facebook Ads & Google AdWords.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 23 contacts → | ||||
Indirect evidence “Anode, c’est l’agence digitale pour les entreprises qui veulent accélérer leur croissance et améliorer leurs performances.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 22 contacts → | ||||
Indirect evidence “AdsBack est l'agence d'Ads nouvelle génération qui maximise le ROI de vos campagnes publicitaires grâce à une méthodologie unique.” Source: RevenueBase Database · checked Sep 19, 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 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 optimization agencies.
- Partial evidence
- Its own public description names part of conversion 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 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 557 conversion optimization agencies based in France
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Conversion optimization agencies based in France at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 557 companies.
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 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 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 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 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, 1,718 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 19, 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 optimization agencies by metro
- Conversion optimization agencies in Paris183
- Conversion optimization agencies in Lyon33
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 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 optimization agencies are there based in France?
RevenueBase identified 557 conversion 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?
Performics, headquartered in Paris, tops this list with the largest team on record.
Which city has the most conversion optimization agencies?
Paris leads with 183 headquartered companies, followed by Lyon (33) and Bordeaux (21).
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 1,718 verified decision-maker contacts tracked across these 557 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 19, 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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