Web performance audit
Identify and understand the real issues on your site
Is your site slow? Are your visitors complaining and is it impacting your conversion rates?
Get a quote in 24hDon't let a slow site nullify the potential of your online business!
Our web performance experts audit your site to identify performance issues
We audit all technical stacks
A service in 6 key steps
Our performance audits are broken down into several key stages.
Technical Alignment
01We meet via video conference to discuss with your teams and discover your technical stack in detail. We review the identified issues, the steps already taken, and your web performance goals. This ensures a service that precisely meets your needs.
RUM Tag Implementation
02We place a tag on your site that collects performance data from your real users. This "RUM" data is used to precisely identify bottlenecks. Thanks to this data-driven approach, we operate with maximum visibility on your issues.
Site Audit
03Our web performance experts conduct a complete audit of your site. They consolidate the identified issues in a detailed deliverable and provide a list of actionable recommendations. Our pragmatic and concrete approach guarantees the effectiveness of future fixes.
Recommendation Prioritization
04We rank our recommendations using the RICE prioritization method: Reach (number of users reached), Impact on performance, Confidence, and Effort of deployment). We thus design your webperf roadmap by prioritizing the rapid deployment of quick wins, for quickly measurable results.
Deliverable Presentation
05We meet again via video conference to present the deliverable to your internal teams or your development agency. This is an essential exchange to ensure that the actionable recommendations are understood and will be deployed optimally.
Deployment Acceptance Testing
06We check the effectiveness of the fixes once the developments have been implemented in your pre-production environment or directly in production. A steering dashboard allows us to communicate continuously until the implementations are finalized, within a maximum of 6 months.
They entrusted us with their site audit
What does the audit deliverable contain?
The web performance audit deliverable is a presentation of prioritized recommendations, structured with one recommendation per slide. Each slide presents the measured finding, the identified technical cause, the precise action to take, and the metric on which the gain is expected. No recommendation is left as a general principle.
Prioritization is what distinguishes an actionable audit from an automatic tool report. Each recommendation has a level of implementation effort and an expected impact level: your teams know where to start, and which projects can wait for the next development cycle without consequence.
The delivery of the deliverable is not a document dispatch. We go over the recommendations in a meeting with your technical teams, answer implementation questions, and help you decide the order of projects. Deployment acceptance testing is included in the package, up to six months after the presentation.
You have a question?
We have the answer!
Consult the FAQ for more details on the service.
Performing a performance audit allows you to detect the concrete problems of your site, those that impact page loading times, and therefore user experience and SEO visibility. It is also an opportunity to assess your site's compliance with web development best practices.
Our cutting-edge expertise is the best way to identify what needs to be modified by your front-end development teams. And therefore to correct them quickly and lastingly.
It depends on the maturity of your development teams. If the tools and the stack are perfectly mastered, you can choose an audit rather than an optimization by us. If this is not the case, we advise you to rely on our experience so that we can make the identified modifications on your site ourselves.
We perform audits on all types of sites. This includes sites built on WordPress, PrestaShop, Shopify, Magento, SalesForce Commerce Cloud, SAP Commerce Cloud (formerly Hybris), Drupal, etc. But also custom-built sites.
Absolutely. We invite you to consult our page dedicated to Single Page Application (SPA) optimization. Modern frameworks like React, Angular, or Vue.js, although increasingly performant, present specific challenges in terms of web performance.
Specific focus is thus placed on client-side rendering, state management, and initial load optimization. Our analysis concentrates on these crucial aspects, using advanced tools and methodologies: this ensures optimal performance for your web application.
A web performance audit costs between €1,500 and €3,500 excluding tax with us, depending on the complexity of the technical stack and the number of templates to analyze. Major firms in the sector charge up to €15,000 for the same service.
This is a fixed-price package, with no billing based on time spent: the 6 key stages are included, from initial technical alignment to the acceptance testing of deployments, including prioritization of recommendations. We will provide you with a quote upon simple request by email or phone.
Allow 2 to 4 weeks between technical alignment and the presentation of the deliverable, depending on the complexity of your stack and the volume of templates to analyze. The precise schedule is defined together from the first discussion.
The subsequent stages (deployment of recommendations by your teams and acceptance testing) then proceed at your pace, within a maximum of 6 months.
The deliverable is a presentation of prioritized recommendations, with one recommendation per slide. Each describes the measured finding, the technical cause, the action to be taken, and the expected gain on a named metric. Each recommendation has a level of effort and impact, allowing your teams to make decisions without us.
The analysis is based on two cross-referenced sources: laboratory measurements, which isolate technical causes template by template, and field data collected by the RUM tag installed at the beginning of the mission. The recommendations therefore concern your real visitors, not a theoretical load under ideal conditions.
The presentation of the deliverable is a step in itself: we go over the recommendations with your technical teams, answer implementation questions, and arbitrate the order of the projects. The acceptance testing of deployments is included in the package, which guarantees that the fixes actually produce the announced effect.
An SEO audit analyzes what your site says and how it is structured: content, keywords, tags, internal linking, indexing, netlinking. A web performance audit analyzes what your site costs to load: server response time, resource weight, execution order, visual stability. One deals with relevance, the other with speed.
The two overlap on one specific point, Page Experience: Core Web Vitals are a ranking signal, and an SEO audit mentions them without addressing them in depth. It signals that an LCP is bad; it does not say which of the four sub-parts is degrading it, nor which line of code to fix.
The two services are therefore complementary and do not replace each other. A site perfectly optimized in substance but slow will lose positions and conversions; a fast site without a content strategy will not be found. Our scope is the latter, that of technical performance.
A complete audit is justified every 18 to 24 months for a stable site, and systematically after a redesign, migration, or theme change. Between two audits, monitoring takes over: it detects regressions as they occur, without waiting for the next mission.
Performance always degrades through accumulation: an added extension, a marketing script connected, a banner inserted on all pages. None of these actions are visible in isolation. It is their cumulative effect that causes Core Web Vitals to drop, generally a few months after the end of an optimization project.