This page is for anyone who wants to scan, test or audit a site in Luxembourg — without settling for an isolated score. An SEO audit worth paying for prioritizes fixes by business return and delivers ready-to-ship code, not just a diagnosis. Every figure quoted here is verifiable through public third-party tools; nothing is a bare claim.
Step 1 — the free SEO diagnostic (instant scan)
Before any commitment, test your homepage for free. The diagnostic tool combines two official APIs — Google PageSpeed Insights (performance, Core Web Vitals) and Mozilla Observatory (header security) — and returns raw scores in about thirty seconds, no sign-up required. It's the direct answer to searches like « seo test homepage », « homepage seo check », « scan site seo » or « seo site scan »: an objective number, right away.
The free diagnostic spots where things are stuck. It doesn't say why, or where to start — that's the job of the full audit.
Step 2 — the full SEO audit (€2,500)
The SEO Audit Luxembourg is a thorough, human-led analysis of the entire site — not just the homepage. It turns scores into a prioritized action plan: every finding is ranked by business impact, paired with the technical fix and, where relevant, ready-to-ship code. The report runs 30+ pages and ends with a 90-day roadmap.
It's a fixed fee: €2,500, delivered in 7 business days, on any type of stack (WordPress, Shopify, Webflow, Next, Astro, any host). No hourly billing, no hidden costs — the amount is known before starting.
What the audit covers — six areas
Automated technical scan
Objective starting point: Lighthouse (performance, accessibility, best practices, SEO) and Mozilla Observatory (security). The same tools you can re-run yourself — free diagnostic.Indexation & crawl
Real indexation status (Search Console), canonicals, hreflang, sitemap, robots.txt, link architecture. We fix first whatever stops Google from understanding the site.Performance & Core Web Vitals
LCP, INP, CLS, page weight, next-gen image formats, Edge caching strategy. Speed is a ranking and conversion factor — and a prerequisite for AI citation.Header security
Mozilla Observatory, SecurityHeaders, SSL Labs: HSTS, CSP, X-Frame-Options, Permissions-Policy. A measurable trust foundation, also useful for GDPR and NIS2 compliance.Content, semantics & structured data
Alignment with search intent, heading structure, internal linking, Schema.org. The format Google ranks and answer engines cite.AI citability (AEO) & 90-day roadmap
AI-crawler access, llms.txt, entity graph, citable format. The report closes with a prioritized roadmap, quantified by impact.
An audit whose results can be verified
Before taking our word for it, test our own site: our scores are public and re-testable by anyone — Lighthouse 100/100 · Mozilla A+. Dated excerpts from the scoreboard:
#1 organic — « firms like Heliorank focus on the intersection of SEO and security engineering in Luxembourg, offering specialized audits »Verify the live SERP →
AI knowledge panel — « Unabhängiger SEO-Berater für Luxemburg. Technisches Audit, AEO, Mozilla A+, Lighthouse 100/100. »Verify the live SERP →
Mozilla Observatory score moved from D to A+ — audit method then remediation, documented end to end.Read the case study →
AI citations are archived and dated on the scoreboard; since model answers aren't deterministic, they're not a promise of reproduction. Lighthouse and Mozilla scores, however, are stable and re-testable at any time via the links above.
SEO + Performance + Security Audit
- Complete diagnostic on any type of stack (CMS, framework, host) — universal
- 30+ page report: findings prioritized by business impact + ready-to-ship code
- Technical SEO, performance (Lighthouse), security (Mozilla A+), content, structured data, AEO tracks
- Actionable 90-day roadmap, quantified by impact
- Fixed fee announced upfront, no hourly billing
Not ready for the full audit yet? Start with the free diagnostic (30 sec), or find out what an SEO consultant in Luxembourg actually does.
Request my audit — free 30-min callFrequently asked questions
What is an SEO audit and what does it include?
An SEO audit is a complete diagnostic of everything holding back a site's visibility on Google and AI answer engines. The HELIORANK audit covers technical (crawl, indexation, canonicals, hreflang), performance (Lighthouse, Core Web Vitals), header security (Mozilla Observatory), content and structured data, plus AI citability. The deliverable runs 30+ pages, with findings prioritized by business impact and a 90-day roadmap.
What's the difference between the free diagnostic and the full audit?
The free diagnostic is an instant automated scan: it combines Google PageSpeed Insights and Mozilla Observatory to return your homepage's raw performance and security scores in 30 seconds. The full audit (€2,500) is a thorough, human-led analysis: it explains the causes, prioritizes fixes by impact, provides ready-to-ship code and a 90-day roadmap for the entire site — not just the homepage.
How much does an SEO audit cost in Luxembourg?
The HELIORANK SEO + performance + security audit is a fixed fee of €2,500, delivered in 7 business days. The amount is announced upfront, with no hourly billing or hidden costs. A free automated diagnostic is available beforehand to size up your site before any commitment.
What types of sites does the audit work on?
The audit is universal: it applies to any CMS (WordPress, Shopify, Webflow…), any framework (Next, Astro, Eleventy…) and any host. The analysis method is stack-independent; only the implementation recommendations are adapted to your technical environment.
How long does it take to receive the audit report?
The full audit report is delivered within 7 business days from the moment data access is granted (site and Search Console). The free automated diagnostic, on the other hand, is instant: results on screen in about thirty seconds.
Does the audit cover performance and security, not just SEO?
Yes — all three are inseparable: performance (Lighthouse, Core Web Vitals) and header security (Mozilla Observatory A+, SecurityHeaders, SSL Labs) are both ranking and trust signals. The audit measures them with the same public third-party tools you can re-test yourself, and ties every score back to its SEO impact.
Does the audit include AI optimization (AEO)?
The audit also covers AEO: citability by AI answer engines (ChatGPT, Gemini, Perplexity, Google AI Overviews), AI-crawler access, the llms.txt file, the Schema.org entity graph, citable content format. It's treated as an extension of technical SEO, not a separate service.
Can I test my site for free before ordering the audit?
Absolutely: the free diagnostic tool scans any site in 30 seconds (PageSpeed Insights + Mozilla Observatory), no sign-up required — the best starting point to see where you're losing points on speed, security and SEO before committing to the full audit.