Best international SEO agency: our top 10 agencies in France in 2026

Onze is an SEO and GEO agency founded in 2024, fully remote, with six senior consultants, two of whom are assigned to each client. Its consultants speak Spanish, French, Italian, German and English, and rely on a network of writers for other languages. The agency says half of its projects have an international dimension. Its offer covers audits by market, the choice between subdirectories and subdomains, hreflang, transcreation reviewed by a native speaker, link building by country and reporting by country, with eight dedicated country pages.

It publishes several multi-country rollouts: Sortlist, supported for twelve months across fifteen countries with more than 300 links acquired; Superprof, across twelve countries, with more than 10,000 pages optimized in France, Belgium and Luxembourg; Heytens, whose four sites (France, Belgium, Luxembourg, Switzerland) were merged in 2024 with no traffic loss, then +150% non-brand traffic. Its prices are public: at least €5,000 per country or per language, €650 per day, and translation reviewed by a native speaker at €0.07 per word.

Keyweo was launched in Barcelona in February 2018 by two French founders, Guillaume Bonnard and Guillaume Peltier, and incorporated in January 2020. Its team of about twenty people includes seven nationalities. Everyone speaks at least two languages, including English, and the agency handles nearly ten languages with native speakers, in-house or external. It works in nearly twelve markets and publishes nine country pages, from Spain to the United States. Its method starts with an analysis of the target market, then keyword research specific to each country.

It often recommends a .com split into subdirectories by language, links from sites in the target country (.es sites for Spain) and rewriting content when two markets share the same language. Its case studies cover four countries: Villanovo, a client since 2018, with +406% visits on the French site and +311% on the English site in four years; Kleta, in Spain, with +227% non-brand clicks between December 2022 and December 2023; DD Isolation, in Belgium, with +140% clicks after one year.

Résoneo is a consulting firm founded in 2004 by Richard Strul and three partners, with more than 90 consultants. It supports international clients under two models: centralized management, with native consultants who work in their mother tongue and translators specialized in SEO when a language is missing, or management from Paris of the client's local teams. It presents itself as the first French agency recognized as an International Growth Partner by Google.

Its international references are large accounts: Dassault Systèmes in nine languages, DocuSign with native specialists in Germany, the Netherlands and the United Kingdom. For Ducray, whose site runs in 24 markets, it built content silos written by pharmacists and doctors: +112% international SEO traffic in two years. For Salomon, it supported the replatforming of 25 e-commerce sites, with link building run with each country's teams: +78% SEO traffic in one year.

Eskimoz is a search acquisition group of more than 250 consultants. It claims more than 1,000 clients, speaks ten languages and has five agencies in Europe: Paris, Madrid, Düsseldorf, Milan and London. Its international page covers semantic strategy by language, hreflang audit and rollout, link building by country, multilingual writing and the performance of multi-country sites, tracked in its in-house platform, which measures rankings country by country. Part of its fee is tied to performance.

Its international case studies are numerous. For Sandro, supported since December 2022 across eleven markets in Europe and North America, it reworked the hreflang and oversaw the migration of the eleven sites: +18% non-brand SEO traffic and +249% visibility index. For ALL Accor, in France, the United Kingdom, Spain, Germany and the United States, about thirty links per month coincided with +60% SEO traffic in the target markets. Petit Bateau is also worked on in France, Germany and Italy.

Empirik is a digital marketing agency founded in Lyon in 2012 by Lionel Cherpin, also based in Paris, with 23 staff across SEO, GEO, advertising, analytics and conversion. It works for Legrand, Yves Rocher, Peugeot, Cointreau and Stormshield, and has developed about twenty in-house tools, including the Impakkt platform and AI citation tracking.

Its bilingual consultants work in English, German, Italian and Spanish, with a network of partners for other languages. Its Stormshield case study, a cybersecurity software company with a multilingual site, has figures by country: in the first year, the number of keywords at the top of results was multiplied by 9 in France, by 7 in the United Kingdom and by 22 in Germany. The agency also worked on the language versions of the Cointreau site.

CyberCité has worked since 1999 and has more than 130 staff in Lyon, Paris, Nantes, Rennes, Chambéry and Sophia Antipolis. Its international page approaches the topic through search engines (Google, Bing, Baidu in China, Yandex in Russia) and through each country's habits, down to local platforms. Its consultants structure the language versions of a site or a group of sites, from choosing the domain name to analyzing performance, and adapt editorial recommendations to the cultural habits of each market.

Its Lafuma Mobilier case study, a brand from the Drôme that exports to 70 countries, covers the multilingual redesign of its sites: semantic strategy by market, links chosen according to each country's priorities and content written by native writers. Over one year, SEO traffic grew 22%, and revenue 38% across all markets, all channels combined, with a doubling in the United States. International now accounts for 40% of the brand's online sales, versus 15% four years earlier.

Noiise grew out of 1ère Position, founded in 1999, then its mergers with Matière 1ère and Open Linking, under this name since 2021. It reports 125 consultants and seven agencies in France. For international work, it co-founded a network of independent European agencies: local partners bring their sites, contacts and tools, notably in Italy and the United Kingdom. Its page details Switzerland, Belgium, Italy, Spain, Germany, Poland and the United Kingdom, with links chosen by country and unified reporting.

Its international case study is Vertbaudet, a client since 2017, with which it works on France, Belgium, Switzerland, England, Spain and the Netherlands. On the Belgian site, which had to be brought up to the level of the French site, it added hreflang tags, created pages and worked on internal linking and links: +59% keywords on page one, +46% non-brand SEO traffic, and a place among the top hundred SEO gains of 2019.

Uplix is a Paris agency that combines SEO, advertising and data, winner of the Grand Prix of the Cas d'Or in the Search and AI category with its Predictive Ranking tool. It says it supports clients in more than ten markets. Its international method has five steps: keyword research redone for each market, a technical audit, content localized with professional translators, link building in the country's language, then weekly reporting of clicks and impressions, country by country. It also mentions A/B tests by country.

It reports average growth of +80% in overall organic traffic on its international projects, without stating the period or the number of projects. The case study linked from the page is Orange Money: landing pages created for each "money transfer" query followed by a country name, and +11% clicks on these queries. The page also shows the logos of Logitech, KPMG and K-Way.

SEO Monkey is a Lille-based acquisition agency led by Antoine Veyrières, with SEO as its core business. It claims more than 400 companies supported. Its international page describes sections localized by language and by country, hreflang tags and an architecture that lets you target several countries from one domain. The agency works with native experts for linguistic and cultural relevance, and announces first results in three to six months. Its own site exists in five languages.

It relies on tools built in-house, including a crawler, a campaign management tool and a tracking tool, and on a client portal that shows the time spent on each project. It does not yet publish an international case study: its recent case studies, such as Oney or Kipli, do not cover international. Its daily rate is shown: €500.