--- title: "Best SEO audit agency: our top 10 agencies in France in 2026 - Astrak" url: "https://astrak.agency/en/best-seo-audit-agency/" lang: "en-US" --- Updated on **15/10/2026** · Agency sites reviewed on 15/10/2026 **What is the best agency for an SEO audit? On 15 October 2026 we reviewed the sites of seventeen agencies that offer an SEO audit or a technical audit, and selected nine, ranked alongside Astrak.** An audit is judged on specific points: what it checks (crawling, indexing, rendering, content, links), the format of the deliverable, what happens after delivery, and cases where the fixes produced a result. That is what we looked for on each agency's site. Astrak is the author of this ranking and places itself first: the criteria are detailed below so you can judge for yourself. The leading trio ## Top 3 SEO audit agencies in 2026 [No. 1AstrakAn audit delivered in 10 to 15 days, prioritized by impact, with recommendations ready for your developers.](#fiche-astrak)[No. 2OnzeA public audit price list, and tickets ready for developers.](#fiche-onze)[No. 3RésoneoThe technical firm for large accounts: logs, JavaScript rendering and penalty recovery.](#fiche-resoneo) ## SEO audit agencies in France: what each one publishes Instead of a score out of 10, the table shows what you actually find on each agency's site as of 15/10/2026. | Rank | Agency | Positioning | What the agency publishes about the audit | Published price | |---|---|---|---|---| | 1 | Astrak | SEO and GEO agency · full audit, technical SEO and action plan | Audit content detailed in 4 parts, delivery time, debrief included, 3 technical case studies | Quote on request · €900 to €2,000 (PrestaShop) | | 2 | Onze | SEO and GEO agency of senior consultants · audits with published prices | 6 audit formats, prioritized tickets for devs, log analysis, price list, Vlume case | Audit from €975 · daily rate €650 | | 3 | Résoneo | SEO, GEO and data consulting firm since 2004 · Paris | Technical audit (crawl, logs, facets, Core Web Vitals, SSR), roadmap, Bricomarché case | 1k - 5k | | 4 | L'Agence WAM | SEO, GEO and web agency, formerly Première Place · Lyon and Mulhouse | 5-step method, finding/problem/solution backlog, logs, JavaScript, indicative price | About €2,000 | | 5 | Eskimoz | European search acquisition group · Paris | 6-step method, 4 deliverables, 8 audit types including JavaScript, in-house Crawlr crawler | 1k - 5k | | 6 | Empirik | SEO, GEO and data agency since 2012 · Lyon and Paris | 4-step method and 4 pillars (logs included), named tools, 2 to 5 days | 1k - 5k | | 7 | Premiere.Page | SEO and GEO agency since 2013 · Anglet | Audit on 5 pillars, deliverable adapted to the site, named tools, entry price, Siblu case | From €630 excl. VAT | | 8 | Uplix | SEO, paid media and data agency · Paris | 6-step method, 3 audit types, Core Web Vitals, prioritized action plan, K-Way case | Quote on request (free pre-audit) | | 9 | SEO Monkey | Acquisition agency, SEO first · Lille | Price and timeline listed, 2 formats (deliverable only or with support), Crawlr crawler, Oney case | Audit from €1,000 · daily rate €500 | | 10 | SEO Hackers | SEO agency of senior consultants since 2012 · Paris | 9-step method, crawler, logs, in-house InternalDup tool, deliverable with code examples | 1k - 5k | 1 ## [Astrak](https://astrak.agency/en/seo-audit-agency/) SEO and GEO agency · full audit, technical SEO and action plan ![Astrak Website](https://astrak.agency/wp-content/uploads/2026/10/Astrak-accueil-octobre-2026.jpg)Astrak is a French SEO and GEO agency of 13 people. Its pages [SEO audit](https://astrak.agency/en/seo-audit-agency/) and [SEO technique](https://astrak.agency/en/technical-seo-agency/) detail the deliverable: a full crawl with Screaming Frog and Search Console (indexing, Core Web Vitals, canonicals, redirects, JavaScript and rendering, log analysis depending on the project), semantic analysis (cannibalization, intent, internal linking), a link profile compared with competitors, then an action plan prioritized by impact, a three-to-six-month roadmap and a one-hour debrief call. The report is delivered in 10 to 15 business days, and the technical recommendations are written for developers. The audit is a standalone service: the plan belongs to the client, and about half of clients continue with Astrak for execution. [Trackstone](https://astrak.agency/en/trackstone/), whose JavaScript site had lost 30% of its traffic after Google's March 2025 update, beat its record by July 2025, at more than 1,000 clicks per day, after fixes to the robots.txt, server-side rendering and internal linking. [MyBrocante](https://astrak.agency/en/mybrocante/) went from fewer than 1,000 to 70,000 organic visits per month between January and September 2025, according to Ahrefs. #### Strengths - Deliverable content published, from crawl to roadmap. - Recommendations ready for developers, and checks after release. - Stated timeline: 10 to 15 business days. - Standalone audit, no obligation to continue. #### Points to watch - Audit price on quote, except for PrestaShop stores. - The audit case shown on the page (Formip) has no figures. [Book an appointment with Astrak](https://astrak.agency/en/en/contact/#calendrier)2 ## [Onze](https://agenceonze.fr/services/audit-seo/) SEO and GEO agency of senior consultants · audits with published prices ![Onze website](https://astrak.agency/wp-content/uploads/2026/10/classement-onze.jpg)Onze is an SEO and GEO agency founded in 2024 that only works with senior consultants, two per client. Its audit page lists six formats: technical, content, link building, GEO, 360 audit and log analysis, with variants for e-commerce, SaaS, media, international and local. The technical check covers more than 100 factors (crawling, indexing, on-page, web performance) and is delivered as tickets for developers, each ranked by priority, feasibility and owner. Expect about 30 days, up to 60 in busy periods. Its most telling case is Vlume, an Armenian marketplace built on Angular JS: a detailed technical audit, a roadmap including server-side rendering, a redesign of templates and structure, then +300% traffic in one quarter. The price list is public: technical check and link building audit at €975, quick wins audit from €975 to €2,000, full strategic audit from €2,500 to €4,500, and €650 per day of support. #### Strengths - Detailed, public audit price list. - Prioritized tickets, ready for developers. - Quantified technical case on a JavaScript site. #### Points to watch - Two entry prices depending on the page: €975 on the price list, €1,300 on the audit page. - Vlume case undated, and the number of factors checked varies from one page to another. [See the SEO audit offer](https://agenceonze.fr/services/audit-seo/)3 ## [Résoneo](https://www.resoneo.com/nos-expertises/seo/) SEO, GEO and data consulting firm since 2004 · Paris ![Résoneo website](https://astrak.agency/wp-content/uploads/2026/10/classement-resoneo.jpg)Résoneo is a consulting firm founded in 2004 by Richard Strul, which claims more than 90 consultants and has nine partners. Its technical audit combines an in-depth crawl, a review of the CMS and URL structure, pagination and faceted navigation, server log analysis for crawl budget, and recommendations on Core Web Vitals. It recommends server-side rendering for sites built with Angular, React or Vue. Its audits follow a findings / recommendations format and lead to a roadmap prioritized by cost/benefit. The firm works with OnCrawl, Dareboost and Majestic, is OnCrawl certified and has built its own tools for twenty years (80 R&D projects, 30 of them with AI). For Bricomarché, Bricorama and Brico Cash, hit by the Helpful Content Update, it first cleaned up the technical foundation with Edge SEO: +500% non-brand keywords in the top 10 for Bricomarché. The Leboncoin group has worked with it since 2017, starting with the redesign of its site on React JS. #### Strengths - Technical expertise on very large sites: logs, facets, JavaScript. - R&D tools developed in-house. - Quantified penalty recovery case across three retail brands. #### Points to watch - No page dedicated to the audit, and no published price. - Bricomarché case undated. [See the technical SEO offer](https://www.resoneo.com/nos-expertises/seo/)4 ## [L'Agence WAM](https://agence-wam.fr/metiers/seo/l-audit-du-site/) SEO, GEO and web agency, formerly Première Place · Lyon and Mulhouse ![L'Agence WAM website](https://astrak.agency/wp-content/uploads/2026/10/classement-wam.jpg)L'Agence WAM, formerly Première Place, has worked since 2008 in Lyon and Mulhouse with 50 staff and claims more than 250 clients. Its technical audit starts from audience data, simulates Google's crawl with Screaming Frog, OnCrawl or SEOlyzer, cross-checks Search Console, then delivers a backlog in a "finding, problem, solution" format, prioritized and sourced, to present to developers as user stories. Its technical SEO and log analysis pages also cover JavaScript frameworks, Core Web Vitals and RGAA accessibility. WAM built its own tool, Benhur, which automates technical monitoring crawls, with an update of the SEO backlog every two weeks on average. It gives a price range: two to three days are usually enough to identify priorities, for about €2,000. On results, the redesign of Wash, a TotalEnergies subsidiary, scores 94/100 on the mobile PageSpeed test and +13% keywords in the top 3. #### Strengths - Price range published. - Deliverable ready to use for product teams. - In-house crawl tool for monitoring. #### Points to watch - No quantified standalone audit case: the Wash case is a redesign. - Indicative price, excluding support for the fixes. [See the technical SEO audit offer](https://agence-wam.fr/metiers/seo/l-audit-du-site/)5 ## [Eskimoz](https://www.eskimoz.fr/audit-seo/) European search acquisition group · Paris ![Eskimoz Website](https://astrak.agency/wp-content/uploads/2026/10/classement-eskimoz.jpg)Eskimoz is a search acquisition group of more than 250 consultants, based in Paris, Madrid, Düsseldorf, Milan and London, which claims more than 1,000 clients and ten proprietary tools. Its audit page describes six steps, from scoping to rollout tracking, and four deliverables: a full report, a roadmap ranked by impact, urgency, difficulty and resources, a competitive benchmark and a semantic mapping. Recommendations separate urgent fixes, quick wins and long-term projects. The agency offers eight variants: e-commerce, brochure site, redesign, traffic drop, international, GEO, media and JavaScript site, for rendering and indexing issues linked to client-side loading. Its consultants use Crawlr, its in-house crawler, and about thirty licenses for market tools. A free audit tool gives a first score out of 100 in thirty seconds. The budget is set after a scoping phase. #### Strengths - Method and deliverables described precisely. - Audit dedicated to JavaScript sites. - Proprietary tools, including a crawler. #### Points to watch - No quantified audit case on the page. - No published price. [See the SEO audit offer](https://www.eskimoz.fr/audit-seo/)6 ## [Empirik](https://www.empirik.fr/agence-seo/audit-seo/) SEO, GEO and data agency since 2012 · Lyon and Paris ![Empirik website](https://astrak.agency/wp-content/uploads/2026/10/classement-empirik.jpg)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 audit page describes four steps (collect, prioritize, implement, measure) and four pillars: technical, server log analysis included, content and semantics, link building, and GEO. The tools are named (Screaming Frog, Ahrefs, DataForSEO, plus Thot SEO and Maillage Booster, built by the agency), the debrief takes the form of a prioritized roadmap, and a standard audit takes two to five days. The agency also publishes on advanced technical topics such as edge SEO. #### Strengths - Audit method published, server logs included. - In-house tools for internal linking and content. - GEO built into the audit. #### Points to watch - No quantified audit case published. - Price on quote. [See the SEO audit offer](https://www.empirik.fr/agence-seo/audit-seo/)7 ## [Premiere.Page](https://premiere.page/audit-seo/) SEO and GEO agency since 2013 · Anglet ![Premiere.Page website](https://astrak.agency/wp-content/uploads/2026/10/classement-premiere-page.jpg)Premiere.Page is a search marketing agency based in Anglet since 2013, which claims more than 700 clients served. Its audit, led by a dedicated project manager, covers visibility and rankings, editorial and semantics, technical (full crawl, indexing, robots.txt, markup, Core Web Vitals, structured data) and link building, with a keyword study. The deliverable comes as slides, a Notion page or a PDF depending on the size of the site, and visibility in AI is measured with Otrak, its in-house tool. Its Siblu case, a chain of 4- and 5-star campsites on Drupal, starts with an in-depth technical audit whose recommendations were applied by the client's IT team, along with a geographic content strategy: +192% organic traffic, +201% revenue from SEO and 668 keywords in first position. The price is listed: from €630 excl. VAT for a brochure site, delivered in about a week, after a free pre-audit. #### Strengths - Entry price and timeline published. - Technical audit case followed by quantified results. - Free pre-audit and keyword study. #### Points to watch - Siblu case undated, and its results mix audit and content strategy. - The entry price targets brochure sites; an e-commerce site costs more. [See the SEO audit offer](https://premiere.page/audit-seo/)8 ## [Uplix](https://www.uplix.fr/agence-seo/audit-seo/) SEO, paid media and data agency · Paris ![Uplix website](https://astrak.agency/wp-content/uploads/2026/10/classement-uplix.jpg)Uplix is a Paris agency that combines SEO, advertising and data, claims more than 200 brands served and shows 5 out of 5 from 51 Google reviews. It won the Grand Prix Digital at the Cas d'Or, Search and AI category, with Predictive Ranking, its ranking prediction tool. Its audit combines three analyses (semantic, technical, popularity) in six steps: semantics and competition, technical (Core Web Vitals, mobile, internal linking depth, crawl budget), link profile, editorial strategy, link building, then a report and prioritized action plan. Its K-Way case shows the approach: a full technical audit of a PrestaShop store carried out with L'Agence123, crawling and reporting of technical and semantic optimizations, Data Studio dashboards. The agency reports +22% SEO traffic since the start of the project, first position on "imperméable" (raincoat) and a site "close to 0 technical errors for 3 months". The pre-audit is free and presented by the consulting director. #### Strengths - Audit method structured in six steps. - Award-winning ranking prediction tool. - Free pre-audit. #### Points to watch - K-Way case undated. - No published prices. [See the SEO audit offer](https://www.uplix.fr/agence-seo/audit-seo/)9 ## [SEO Monkey](https://www.seo-monkey.fr/seo/audit-seo/) Acquisition agency, SEO first · Lille ![SEO Monkey Website](https://astrak.agency/wp-content/uploads/2026/10/classement-seo-monkey.jpg)SEO Monkey is an acquisition agency founded in Lille in 2020 by Antoine Veyrières, which claims more than 400 companies served and five agencies in France. Its audit covers technical, content, internal linking, link building, UX, mobile performance and structured data, and leads to a prioritized roadmap. Two formats are offered: a standalone deliverable, or an audit with debriefs and implementation follow-up. The agency uses its own tools, including Crawlr for site audits. Price and timeline are listed: from €1,000, based on a daily rate of €500, delivered in 5 to 30 business days depending on the number of URLs. Its Oney case study, published on 13 October 2026, details the diagnosis of the merchant site partners.oney.com: 819 broken backlinks out of 1,819 after a migration without a redirect plan, and only 0.6% of traffic coming from merchants. The results are not yet published. #### Strengths - Price, timeline and formats listed. - Crawler developed in-house. - Recent, detailed audit diagnosis (Oney). #### Points to watch - No audit case with before/after results. - Oney case results expected in six months. [See the SEO audit offer](https://www.seo-monkey.fr/seo/audit-seo/)10 ## [SEO Hackers](https://seohackers.fr/seo/audit-seo/) SEO agency of senior consultants since 2012 · Paris ![SEO Hackers website](https://astrak.agency/wp-content/uploads/2026/10/classement-seo-hackers.jpg)SEO Hackers is a Paris agency founded in 2012 by Paul Sanches and Mathieu Gheerbrant, both in SEO since 2006, with nine senior consultants and a claim of more than 500 client cases. Its audit follows nine steps, from needs assessment to continuous improvement: competitive analysis, technical audit, semantic audit, strategy, then a full document with appendices and code examples, presented in one or more sessions. The agency works with a crawler, log analysis and InternalDup, its tool for detecting internal duplicate content, then tests the fixes. Its case studies focus on on-site optimization. For Irripiscine, cannibalization between several pages made its ranking on "piscine" (pool) unstable: more than 250 fixes, including more than 200 internal links, and first place reached in August 2024, then stable in the top 3. For the wallpaper site 4MURS, a page-by-page strategy added 1,028 top 10 rankings in the paint category. #### Strengths - Senior consultants with long experience. - Deliverable with code examples, and testing of fixes. - Dated on-site optimization cases. #### Points to watch - Published cases focused on on-site optimization, with no quantified technical part. - No published price. [See the SEO audit offer](https://seohackers.fr/seo/audit-seo/) ## Agencies we reviewed but left out Seventeen agencies were reviewed. Pixalione runs its audits with its AQISIS software suite and offers a first audit, but publishes no prices or audit cases. Junto lists a one-off audit from about €1,500, delivered in 5 to 10 business days, but none of its cases is about an audit. Noiise has an audit page that includes log analysis, with no published price or case. Datashake covers technical work in its SEO and GEO offer, with no page dedicated to the audit. Peak Ace, which absorbed Search Foresight, no longer has a French site. 410 Gone publishes a very detailed e-commerce audit method and SeoMix, a WordPress specialist, its timelines and sample findings, but neither publishes prices or a named audit case. SeoMix appears in our [top WordPress SEO agencies](https://astrak.agency/en/best-wordpress-seo-agency/). ## What an SEO audit should include A free tool produces a list of several hundred "errors" in a few minutes. An agency audit is worth what the tool does not do: separate what really blocks the site, explain it, and say in which order to fix it. It covers four parts. Technical ### Crawling and indexing Full crawl, Search Console reports, excluded pages, canonicals, redirects, JavaScript rendering and Core Web Vitals. On large sites,[log analysis](https://astrak.agency/en/seo-log-analysis/) shows what Google actually crawls. Content ### Semantics and intent Pages that compete for the same queries, content to merge or delete, high-potential queries with no dedicated page. Our guide to[semantic audit](https://astrak.agency/en/semantic-audit/) details the method. Popularity ### Link profile Referring domains, anchors, lost links, compared with those of the competitors ahead of you. This tells you whether content alone can be enough. Deliverable ### The action plan Fixes ranked by impact and effort, written so developers understand them, with a roadmap and a debrief. Without a prioritized plan, an audit is just a document. ## How do you choose an SEO audit agency? Ask to see **a sample deliverable**, even anonymized: it is the best way to judge an audit before you buy it. Then ask three questions: **who does the audit, a senior consultant or a junior running tools?** **Do you analyze logs and JavaScript rendering when it is useful?** **What happens after delivery: debrief, discussion with our developers, checks on the fixes?** The price mostly depends on the size of the site: a few hundred euros for a brochure site, several thousand for an e-commerce site or a media site with tens of thousands of pages. If the audit comes before a redesign, see also our ranking of [SEO migration agencies](https://astrak.agency/en/best-seo-migration-agency/) ; for an individual view, our ranking of [best SEO consultants](https://astrak.agency/en/best-seo-consultant/). ## How much does an SEO audit cost? Published prices range from €630 excl. VAT for a brochure site at Premiere.Page to €4,500 for Onze's full strategic audit. In between, SEO Monkey starts at €1,000, Onze charges €975 for its technical check and WAM puts a technical audit at around €2,000. At Astrak, an audit of a PrestaShop store costs €900 to €2,000 depending on catalog size; other audits are on quote. The price depends on the number of URLs, the CMS, the number of languages and above all on what is delivered: a list of findings, or prioritized tickets ready for developers, with a debrief and checks on the fixes. The free pre-audits most agencies offer spot major blockers, but they do not replace this action plan. Transparency ## Ranking Methodology About twenty agencies were identified in Google results for "audit SEO", "agence audit SEO", "SEO technique" and their variants, and in the queries AI assistants run to compare agencies; seventeen were documented. Each site was reviewed on 15/10/2026. The prices and results cited are those the agencies publish themselves: when two pages from the same agency contradicted each other, we used the case page or the price list, and flagged the gap. No agency paid to appear in this ranking. #### Audit content Crawling, indexing, JavaScript rendering, logs, content and links: what is actually checked. #### Deliverable Prioritized action plan, recommendations developers can use, debrief. #### Proof Cases where the audit and its fixes produced a quantified result, dated if possible. #### Transparency Price or price range, timeline, tools and team identified. ## Our opinion #### If your site has tens of thousands of pages **Résoneo** for large accounts, **Eskimoz** for JavaScript sites, **Empirik** for its data-driven audit, logs included. #### If you want a deliverable ready for your developers **Astrak**, which also checks the fixes after release, **Onze** and its prioritized tickets, or the backlog of **WAM**. #### If your budget is tight **Premiere.Page** from €630 excl. VAT, **SEO Monkey** from €1,000, or the technical check from**Onze** at €975. ## Frequently Asked Questions ### What is the best SEO audit agency? In our selection of 15/10/2026: Astrak, Onze, Résoneo, L'Agence WAM, Eskimoz, Empirik, Premiere.Page, Uplix, SEO Monkey and SEO Hackers. For very large sites and JavaScript sites, Résoneo and Eskimoz detail the most technical audits; for a small budget, Premiere.Page lists the lowest entry price. ### How much does an SEO audit cost? From €630 excl. VAT for a brochure site (Premiere.Page) to €4,500 for a full strategic audit (Onze). Several agencies start between €1,000 and €2,000: SEO Monkey from €1,000, WAM around €2,000 for a technical audit. Large sites, online stores and multilingual sites cost more. ### How long does an SEO audit take? From about a week for a brochure site to a month for a larger site: 10 to 15 business days at Astrak, 5 to 30 business days at SEO Monkey, about thirty days at Onze, up to 60 in busy periods. ### SEO audit or technical audit: what is the difference? A technical audit checks that bots can crawl, render and index the site: crawling, indexing, JavaScript rendering, redirects, Core Web Vitals, structured data. A full SEO audit adds content and keywords, popularity and competition. Most agencies in the ranking offer both, separately or together. ### Do you need a log analysis? For a site with several thousand pages, yes: server logs are the only source that shows what Googlebot actually crawls. Onze, Résoneo, WAM and Empirik offer it; on a small brochure site, Search Console is usually enough. ## Is your site stalling and you don't know why? We open your Search Console together and tell you what is blocking it, and where to start. Thirty minutes, no commitment. [Book a meeting](https://astrak.agency/en/en/contact/#calendrier) Léo Poitevin's newsletter ## SEO and GEO that really work, every week Tests, client data and field feedback, read by more than 5,500 people. One email a week, unsubscribe in one click. 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