Website audit in Lyon — A full analysis of UX, performance and SEO

Why have your website audited?

A poorly optimised site is losing you customers

According to Google, 53% of mobile visitors leave a site that takes more than 3 seconds to load. A slow site means losing more than half your visitors before they have even seen your offer. In Lyon, where online competition is intensifying in every sector, each extra second of loading time is a real loss of revenue. Our audit precisely measures the loading time of every page and identifies what is slowing your site down.

5 warning signs that call for an immediate audit

Your site needs an urgent audit if you notice any of these symptoms: pages that are noticeably slow to load, a bounce rate above 60%, no traffic coming from Google, contact forms that generate no leads, or a site that does not display properly on mobile. Each of these signs points to a technical, UX or SEO problem that is holding back your online growth.

Preventive vs corrective audit

A preventive audit is carried out at regular intervals (quarterly or every six months) to maintain your site’s performance and anticipate problems. A corrective audit comes in when symptoms are already visible: a drop in traffic, lost Google rankings, a falling conversion rate. In both cases our methodology is the same — only the urgency of the fixes differs. Clients on a maintenance contract have preventive audits included in their subscription.

The 6 areas of our website audit

1. On-page and technical SEO audit

We analyse every page of your site: meta tags (title, description), H1–H6 heading structure, internal linking, content quality, keyword density, sitemap.xml, robots.txt and Schema.org structured data. This audit reveals why Google is not ranking your pages for your target keywords. For an even more in-depth SEO audit, see our dedicated technical SEO audit.

2. Performance audit (Core Web Vitals)

Core Web Vitals are the performance metrics Google uses to rank your site. We measure and optimise LCP (Largest Contentful Paint), INP (Interaction to Next Paint), CLS (Cumulative Layout Shift), TTFB and FCP. Each metric is compared with Google’s recommended thresholds and with the performance of your competitors in Lyon. Discover our dedicated Core Web Vitals optimisation service.

3. UX and conversion rate audit

Beyond the technical side, we analyse the user journey on your site. Where do your visitors click? Where do they drop off? Are your CTAs (calls to action) visible and convincing? Is your conversion funnel smooth or full of obstacles? We use behavioural analytics tools to identify the friction that stops your visitors from becoming customers.

4. Mobile and accessibility audit

Most web traffic today comes from mobile devices. We test your site on 12 different devices (smartphones and tablets) to check the display, touch navigation and mobile performance. Accessibility (WCAG 2.1) is also checked to make sure your site can be used by everyone, including people with disabilities.

5. Security and GDPR compliance audit

SSL certificate, HTTP security headers, protection against injection, cookie management, privacy policy, legal notice — we check every aspect of your site’s security and legal compliance. Find out more about our security and GDPR compliance service.

6. Local presence audit

For businesses targeting local customers in Lyon and Auvergne-Rhône-Alpes, we audit your local presence: Google Business Profile listing, NAP (Name, Address, Phone) consistency across directories, customer reviews and local SEO. Good local SEO can account for up to 80% of qualified traffic for a neighbourhood business.

What you receive after our audit

A 20- to 40-page report

Every audit results in a detailed report of 20 to 40 pages, depending on the complexity of your site. It contains annotated screenshots, figures, before/after comparisons and performance charts. Every issue identified is documented with its cause, its estimated impact and the recommended solution.

A list of fixes prioritised by impact

We do not bury you under dozens of impenetrable technical recommendations. Each fix is ranked by priority: quick wins (high impact, low effort), structural fixes (high impact, medium effort) and ongoing improvements (moderate impact, variable effort). You know exactly where to start.

A 60-minute debrief call

The report alone is not enough. We schedule a 60-minute debrief call to present the findings, answer your questions and agree on the next steps together. It is also the moment to prioritise actions according to your budget and business objectives.

Website audit: our prices and turnaround times

Express audit (48 hours) — showcase sites

Ideal for small businesses in Lyon with a showcase site of fewer than 20 pages. Within 48 hours you receive a concise report covering all 6 audit areas, with the most urgent fixes. The express audit includes a 30-minute debrief call.

Full audit (5 days) — e-commerce and complex sites

For e-commerce sites, high-traffic platforms and sites with more than 50 pages. The full audit includes a page-by-page analysis, an in-depth competitor benchmark and a detailed remediation plan with budget estimates. A 60-minute debrief and a 30-day follow-up are included.

Recurring monthly audit — maintenance subscribers

Clients on a KAYZEN maintenance contract receive an automated monthly performance audit with a simplified report and an alert in case of regression. This continuous monitoring keeps your site performing well over time.

Why choose KAYZEN for your audit?

Our professional audit tools

We use a suite of professional tools for every audit: Semrush for SEO and competitor analysis, Google Search Console for indexing data, Lighthouse and GTmetrix for performance, Screaming Frog for the technical crawl, and automated accessibility tools for WCAG. Combined with our human expertise, these tools ensure a reliable, thorough diagnosis.

An actionable report, not an indigestible technical one

Many web agencies in Lyon deliver audits full of impenetrable technical jargon. At KAYZEN, every recommendation is explained in plain language, with an estimate of the potential gain. You do not need to be a developer to understand our report and make informed decisions. That is our commitment to quality.