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

Onze is an SEO and GEO agency founded in 2024 that only works with senior consultants, in pairs, with a maximum of six accounts per consultant. Its WordPress page is one of the most precise in the panel: a reasoned preference for Rank Math Pro, Polylang for international sites, structured data and custom-built menus.

Its clients include Polylang, the publisher of the WordPress multilingual plugin, for the redesign of its website and its editorial strategy. For development, Onze works with the WordPress agency AmphiBee, with which it shares its head office in Béthune. The daily rate is public: €650.

SeoMix started in 2010 as Daniel Roch's website and became an agency in 2013 in Nantes. Daniel Roch is the author of the book "Optimiser son référencement WordPress", published in five editions, and the agency publishes SEOKEY, an SEO plugin for WordPress installed on over 1,000 sites according to the official directory. It says it has supported over 500 clients and trained over 300 people.

Its method covers the audit, WordPress-specific technical optimizations (SEO plugin configuration, performance, code, custom post types), content strategy and internal linking, then tracking. The agency also offers a two-day WordPress SEO and GEO training course, Qualiopi certified. Among its listed clients: Radio France, Kiabi, AP-HP and Dassault Aviation.

Be API is a 100% WordPress agency founded in 2009, with 38 employees, which claims over 500 WordPress projects. It presents itself as the only WordPress VIP partner agency in France, the hosting and support program for very large WordPress sites. It is therefore especially comfortable with complex, multisite and international sites.

Its WordPress SEO audit covers crawling, indexing, taxonomies, canonicalization, sitemaps, Core Web Vitals and the link profile, and its SEO consultants work directly with its developers. The agency is active in the community: one of its consultants gave a talk on GEO with WordPress at WordCamp Bretagne in September 2026.

Premiere.Page is a search marketing agency based in Anglet, active since 2013, which claims over 700 clients. Its WordPress page describes concrete work: caching and images with WP Rocket, Yoast or Rank Math settings, selective canonical and noindex, content structuring in Gutenberg or the client's page builder, local SEO and visibility in AI tools.

It publishes the case of Piscines Courrej, a WordPress site: about fifty pages including 29 local pages, over 120 links and a redesign, for +1,800% SEO traffic and second position for "pisciniste Anglet". Prices are shown: audit from €630 excl. VAT, support from €249 excl. VAT per month.

Résoneo is a consulting firm founded in 2004 by Richard Strul and three partners, with more than 90 consultants and nine partners. It is a Google Partner Premier and regularly wins at the SEMY Awards. It has run 80 research and development projects, about thirty of them with AI, and publishes reverse-engineering studies on Google and AI engines.

Its SEO page lists WordPress among the platforms it supports and details the technical topics that make the difference on large sites: server-side rendering for JavaScript sites, redirect plan, log analysis. The firm rebuilt its own site on WordPress in 2022. Its partner Olivier de Segonzac opened SMX Paris 2025 with a keynote on the Google Leaks.

Maintenance WP is a Paris agency that works only with WordPress, founded in 2017 by Julien Guiard, with six experts and over 300 clients claimed. It started with website maintenance and also offers development and SEO, and says it is a member of the WordPress Francophone association and of WP Paris.

Its SEO method follows five steps: audit, keyword strategy, technical and on-page optimization, link building and content, then tracking. It publishes all its prices: audit from €600 excl. VAT, support from €800 to €3,000 per month, full twelve-month project from €10,000 to €30,000. Its testimonials include Gemmyo, Keobiz and Miyé.

Uplix is a Paris agency that combines SEO, advertising and data, claims over 200 client brands and won the Grand Prix of the Cas d'Or Search and AI with its Predictive Ranking tool. Its SEO experts work in pairs.

Its WordPress page presents a six-step method, run by WordPress specialists who also cover conversion optimization and user experience, with weekly tracking. In July 2026 the agency published its own analytics plugin for WordPress, Uplix Analytics, and it offers an initial diagnostic.

Keyweo is an SEO, SEA and GEO agency founded in 2018 in Barcelona by two French entrepreneurs, Guillaume Bonnard and Guillaume Peltier. Its team, of seven nationalities, works on nearly twelve markets and writes in several languages.

Its WordPress page details the plugins it recommends (Yoast, WP Rocket, Redirection, EWWW for images) and relies on translators specialized in SEO to roll out sites in several languages. The agency says it has built, fed and optimized a large number of WordPress sites, and states budgets from €500 to over €10,000 per month depending on the scale of the project.

WP channel is the company of Aurélien Denis, who has supported WordPress projects since 2007. A former president of the WordPress Francophone association, he co-organized several WordCamps (Bordeaux, Biarritz) and spoke at many editions of WordCamp Paris. He also spoke at SEO Camp Pays Basque.

His SEO offer focuses on WordPress-specific on-site SEO: architecture, markup, sitemaps, robots.txt and Search Console. WP channel is an official partner of SEOPress, one of the leading French SEO plugins; link building and advertising go through partners.