IDENTIFIEZ CE QUI FREINE VOTRE CROISSANCE

Erreurs d'indexation, vitesse de chargement, liens cassés, balises manquantes… L'audit technique révèle tous les blocages invisibles qui empêchent votre site de performer et vous donne un plan d'action clair pour les corriger.

AMÉLIOREZ VOTRE POSITIONNEMENT SUR GOOGLE

Un site techniquement sain est mieux crawlé, mieux indexé, mieux classé. L'audit technique est la base indispensable de toute stratégie SEO efficace sans elle, tous vos efforts de contenu sont limités.

PRÉPAREZ VOTRE SITE POUR L'ÈRE DE L'IA (GEO)

Les moteurs génératifs privilégient les sites structurés, rapides et fiables. Un audit technique optimisé pour le GEO augmente vos chances d'être cité par ChatGPT, Perplexity, Claude, etc et renforce votre autorité en ligne.

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Mathieu M

CMO

Analyse technique complète

On passe votre site au scanner, crawl, indexation, vitesse, Core Web Vitals, structure pour identifier chaque point de friction invisible.

Audit GEO

On analyse votre contenu sous l'angle des moteurs IA pour identifier ce qui vous empêche d'être cité par ChatGPT, Perplexity et Google AI.

Recommandations

On vous livre un rapport clair et priorisé, pas 80 pages de jargon, mais les actions concrètes à mener en priorité pour progresser rapidement.

Plan d'action

On traduit chaque recommandation en tâches actionnables, classées par impact et par effort pour savoir exactement par où commencer.

Suivi & pilotage

On suit vos positions, votre trafic et vos performances mois après mois pour ajuster la stratégie en continu et vous montrer ce que ça rapporte concrètement.

let's discuss it

4.9/5 • 97 reviews

Most agencies make a great first impression and sell you the dream in those early conversations, but that illusion fades fast once the contract is signed. With Gemeos, it’s different. Gemeos are professional and genuinely committed to doing things right and fast. I really recommend them. And this is the first time I’ve ever recommended an agency.

Quentin Mayet

VP Marketing @Paradox

We worked with Gemeos in the summer of 2024 to redesign Modjo’s marketing site and better reflect the brand’s new positioning. The collaboration was incredibly efficient, the agency was highly responsive and adapted to every unexpected challenge. With limited resources on our side, right in the middle of summer, we launched the new site in just six weeks. Site visit engagement increased by 58%!

Thomas Beylot

VP Product @Modjo

“Gemeos are the perfect experts to take over your website from A to Z. Beyond being highly skilled, they were proactive and came up with great ideas throughout the project, a real plus! Thanks for this fantastic Openeat website redesign ;)”

Martin Catineau

Head of Market @Openeat

Really great working with you — you get up to speed really fast, and the process is frictionless 🔥

Kévin Moënne-Loccoz

VP of Product & Design @Lemlist

Sandro and his team are incredibly efficient and really attentive. They have a great grasp of their clients’ SEO challenges and always come up with the right solutions. Highly recommend

Jules Ratier

CEO @Koncile

Gemeos delivered a showcase website that met our standards, while still working within a pretty tight timeline. Their process was efficient, and they were available, attentive, and very responsive throughout the project. They’re a highly complementary and very capable duo. Highly recommend!

Thibaud Bertrand

Head of Marketing @Side

“Great Webflow agency. Available, attentive, and responsive. We brought them in to redesign our Nuant.com website, providing the Figma mockups. We’re very happy with the result, and their Webflow expertise is a real asset.”

Leo Carli

Product Marketing Manager @Nuant

We worked with Gemeos for several months on the redesign of our site and the launch of our new Taalent.ai offering in the U.S. market. The team was able to combine strategic vision, high-quality execution, and great responsiveness throughout the project. An effective collaboration that I’d recommend without hesitation.

Alexandre Duffaut

CEO @Noota

Efficiency, structure, and performance. Gemeos managed to translate Avnear’s identity into a website that exceeded our expectations. Client feedback has been unanimous. The team showed remarkable agility in adapting to our requests and our high standards. A trusted partner we’d recommend without hesitation. Our site is a masterclass in building trust.

Charley Arod

Founding Partner. Asset & Risk Management @Avnear

Gemeos worked on the Webflow integration as part of our website redesign, with the goal of giving our Growth team back control over landing page creation and improving web performance and SEO. I highly recommend Sandro for his availability, responsiveness, teaching approach, and, above all, his understanding of our business needs.

Florian Corteel

SEO Manager @Finary

Thanks to the whole team, always going the extra mile to push the boundaries!

Florent Darrault

CMO @Cureety

We entrusted Gemeos with a full website redesign and migration, and everything went incredibly smoothly. What stood out most to us was the quality of the art direction: a truly premium, cohesive visual direction, with a clear visual identity and highly polished choices throughout — typography, colors, iconography, pacing, hierarchy, and more. You can tell they have great taste, and above all, a real eye for detail on every screen. On top of that, the team is incredibly responsive and very experienced: they know both design and the technical side inside out. I’d recommend them without hesitation.

David BERNARD

CEO & Founder @AssessFirst

Sacha & Sandro worked on the redesign and migration of our website with a few clear goals: create a unique, differentiated visual identity, clarify our message and value proposition, smooth out the customer journey, and ultimately generate more business opportunities. We’re very happy with the result, and the numbers speak for themselves. Sacha & Sandro are skilled, committed, conscientious, passionate, and they see things through to the end. I highly recommend them!

Idir AIT SI AMER

CEO @Tracktor

WhattheFAQ

What is a technical SEO audit?

A technical SEO audit is a complete diagnostic of your site to identify everything holding back its indexing and ranking by Google. It's not about checking whether your copy contains the right keywords: it's an analysis of the site's technical infrastructure, independent of content.

A good audit covers crawlability, performance, URL structure, internal linking, tags, indexing errors, and mobile compatibility. It's the foundation of any serious SEO strategy.

Area of analysis	What we check
Crawlability	Robots.txt, sitemap, blocked pages, crawl budget
Performance	Core Web Vitals, load time, LCP, CLS
Structure	Site architecture, canonical URLs, redirects, 404 errors
Tags	Title, meta description, Hn headings, structured data
Internal linking	Orphan links, click depth, anchor text
Mobile	Responsive, mobile speed, interstitials

At Gemeos, a technical SEO audit is systematically included in our Webflow redesign projects.

Is it worth doing a technical SEO audit during a redesign?

It's actually the best time to do it. A redesign is a unique opportunity to fix the old site's structural problems without creating additional technical debt. If you migrate without a prior audit, you risk reproducing the same mistakes, or even creating new ones: URLs changing without redirects, lost indexed pages, degraded performance.

An audit ahead of a redesign also makes it possible to map out the pages that generate organic traffic: they need to be preserved and properly redirected, not accidentally deleted.

Without an audit before the redesign	With an audit before the redesign
Risk of losing existing organic traffic	High-performing pages identified and preserved
Missing or incorrect redirects	Redirect plan prepared in advance
Technical errors carried over	Clean slate from launch
Ranking drop after launch	SEO continuity ensured

How do you prioritize technical SEO fixes?

Not all SEO errors have the same impact. Priority is determined along two axes: the severity of the problem (does it block indexing?) and the number of pages affected. A critical error on 1 page is less urgent than a moderate error on 200 pages.

Priority	Type of problem	Concrete examples
Critical — fix immediately	Blocks indexing or navigation	Pages blocked in robots.txt, redirect loops, non-HTTPS site
High — fix within 30 days	Significantly degrades performance	Core Web Vitals in the red, 404 pages with backlinks, duplicate content
Medium — to schedule	Lost visibility opportunity	Missing title tags, poor internal linking, non-canonicalized URLs
Low — handle as you go	Marginal optimizations	Meta descriptions too long, generic anchor text

How much does a technical SEO audit cost?

A technical SEO audit at Gemeos starts at €1,000. This covers a complete analysis of the site, a prioritized report of the fixes needed, and a debrief session to explain the priorities and the actions to take.

Audit type	Indicative range	What's included
Basic technical audit	€1,500 to €2,500	Full crawl, prioritized report, debrief
Technical + semantic audit	€2,500 to €5,000	Technical + keyword analysis + content opportunities
Full pre-redesign audit	€3,000 to €6,000	Technical + redirect plan + architecture recommendations

A well-executed audit pays for itself quickly: priority fixes often generate measurable organic traffic gains within 60 to 90 days of implementation.

How long does a technical audit take?

A complete technical audit takes between 5 and 10 business days depending on site size. A 50-page site is handled in one week. A 500-page site with several subdomains and a history of migrations can take 2 to 3 weeks.

Site size	Estimated duration
Under 50 pages	3 to 5 business days
50 to 200 pages	5 to 8 business days
200 to 500 pages	8 to 12 business days
500+ pages	2 to 4 weeks

This timeline includes the automated crawl, manual analysis of critical points, writing the prioritized report, and preparing the client debrief. The debrief itself is a step not to be skipped: an audit without an explanation of priorities remains unusable for a non-technical team.

How often should you run an SEO audit?

A complete audit is ideally done once a year, and systematically before any redesign or migration. In between, ongoing monitoring via Google Search Console and a tool like Ahrefs helps catch issues as they arise, without waiting for the next annual audit.

Situation	Recommended check
Launch or redesign	Full audit required
Every 12 months	Full maintenance audit
Every quarter	Partial audit: performance, new errors
Ongoing	Search Console monitoring + Ahrefs alerts
After a Google update	Analysis of traffic and ranking changes

Do you need a developer to fix SEO issues?

It depends on the nature of the fix. Some technical SEO issues can be fixed directly in the CMS without touching the code: title tags, meta descriptions, 301 redirects, URL structure. Others require technical work: Core Web Vitals optimization, structured data, lazy loading, image compression at the source.

On Webflow, a large share of technical SEO fixes are accessible without a developer, which is one of the platform's concrete advantages over WordPress.

Type of fix	Developer needed?	On Webflow
Title and meta tags	No	Native Webflow interface
301 redirects	No	Webflow redirects panel
Structured data (schema.org)	Yes	Custom HTML embed
Core Web Vitals	Often yes	Image optimization, third-party scripts
Sitemap and robots.txt	No	Native Webflow SEO settings

At Gemeos, developers step in for technical fixes that go beyond the CMS scope, working alongside the SEO team who runs the audit and prioritizes the actions. That's the advantage of having design, development, and SEO on the same team.