Technical and semantic SEO audit
A redesign without a prior audit can wipe out months of traffic in hours. We produce a full picture of your site before any work begins.
Search Console shows positions and clicks. CrUX shows what your real users experience. A full crawl reveals the errors neither of them catches. We cross-reference all three.
Measure our site. Then yours.
Enter a URL and Google measures the page. Our own figures are already shown, dated.
isomorph.fr/audit-seo-technique
Google PageSpeed Insights, July 30, 2026.
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What the audit contains
Technical audit
Full crawl, HTTP error analysis, redirects, duplicate tags, pagination and canonicalisation issues. Structured report by priority.
Performance audit
CrUX data (Core Web Vitals in real conditions), LCP, INP, CLS. The metrics that matter for Google Search, measured on your actual users.
Our Next.js App Router builds integrate Core Web Vitals from the design phase: an audit reveals what a redesign can correct.
Semantic audit
Mapping of covered and missing search intents, cannibalization analysis between pages, internal linking recommendations.
Search Console analysis
Queries ranking in positions 5 to 15 with high impression volume, declining pages, prioritised quick wins.
Deliverable
Report in two parts (findings and action plan), semantic map, technical fixes ordered by impact.
Why we host on French infrastructure (in French): our article on sovereign hosting.
What we do not promise
An SEO audit guarantees no position. It produces an accurate picture of your site and an action plan based on your real data. Rankings evolve depending on competition, content and the budget you allocate.
For paid campaign management in parallel, see our Google Ads consultant page.
Four standards, on every project
RGAA 4.1.2
Accessibility
RGESN
Eco-design
Core Web Vitals
Performance
OWASP Top 10
Security
How an SEO audit runs
01
Data collection
Search Console access, CrUX, site crawl, data extraction.
02
Analysis and report
Findings by category, semantic map, prioritised action plan.
03
Debrief
Report walkthrough, questions, plan adjustments based on your priorities.
Audit cost depends on the number of pages and page templates to analyse.
Have your site reviewed
Share your URL and your main current issue: declining traffic, a planned redesign or a penalty. We come back with a tailored audit proposal.