Web Analytics Audit: Find Out Why Your Data Can’t Be Trusted
Most companies discover their analytics data is unreliable only after making a costly decision based on it. Wrong attribution, duplicated conversions, missing events, misfiring tags — these issues are common, quiet, and expensive.
Your Analytics Setup Is Probably Broken. Here’s How to Know for Sure.
A web analytics audit is the fastest way to find out what’s actually happening in your tracking stack — and get a clear, prioritized plan to fix it.
I’m a freelance analytics specialist working with SMBs, DNVBs, and e-commerce brands across Europe and the US. I audit GA4, Adobe Analytics, Amplitude, Google Tag Manager, ad pixels, and A/B testing tools — and I deliver findings you can act on immediately.
EDUCATIONAL / SEO SECTION
What Is a Web Analytics Audit?
A web analytics audit is a systematic review of your entire data collection and measurement infrastructure. It examines how data flows from your website or app into your analytics platforms — and identifies every point where that data is inaccurate, incomplete, or misleading.
A thorough audit covers:
- Tag management (GTM container health, tag firing logic, trigger conditions)
- Analytics platforms (GA4 event quality, Adobe Analytics implementation, Amplitude event taxonomy)
- E-commerce and conversion tracking accuracy
- Ad platform pixels (Meta, Google Ads, TikTok, LinkedIn) and deduplication
- Data layer integrity and structure
- Cross-domain and cross-device tracking
- A/B testing tool configuration and data conflicts
- Consent management and cookie compliance
The output is a written audit report with a severity-ranked list of issues and concrete recommendations — not a slide deck full of screenshots with no context.
PAIN POINTS / TRIGGERS SECTION
Signs You Need a Web Analytics Audit
You probably need an analytics audit if:
- Your GA4 and Shopify (or your CRM) revenue numbers don’t match
- Conversion rates look suspiciously high or low
- Your ad platforms report wildly different results from your analytics tool
- You recently migrated from Universal Analytics to GA4 and data looks off
- Your GTM container has grown organically and no one really knows what’s in it
- You’re running A/B tests but suspect the data is being influenced by tracking conflicts
- You switched analytics platforms (to Adobe Analytics or Amplitude) and aren’t sure the implementation is correct
- You’re about to scale ad spend and need to be sure conversions are tracked reliably
- A new team inherited a tracking setup no one documented
If any of these sound familiar, the audit will almost certainly uncover issues worth fixing.
SERVICES / TOOLS SECTION
What I Audit
GA4 Analytics Audit
GA4’s event-based model is powerful — but it breaks in subtle ways that are easy to miss. I review your entire GA4 implementation: event naming, parameter quality, conversion setup, user identification, and data stream configuration.
- Event tracking completeness and naming conventions
- E-commerce events: view_item, add_to_cart, begin_checkout, purchase
- Duplicate event detection
- Conversion and audience configuration
- GA4 data retention and sampling settings
- BigQuery export setup (if applicable)
Google Tag Manager Audit
GTM containers accumulate tags, triggers, and variables over time — often without documentation or cleanup. I audit every element in your container, identify conflicts, redundant tags, and firing errors, and deliver a clean-up plan.
- Full tag inventory and firing validation
- Trigger logic review
- Variable and data layer audit
- Dead tags and legacy code identification
- Container performance and load time impact
Adobe Analytics Audit
Adobe Analytics implementations tend to be complex, custom-built, and under-documented. I review your report suites, variable mapping, VISTA rules, processing rules, and eVars/props to ensure data quality and consistency.
- Report suite configuration review
- eVar, prop, and event mapping audit
- Data layer and AppMeasurement / Web SDK implementation review
- Processing rules and VISTA rule audit
- Workspace report accuracy validation
Amplitude Audit
Product analytics tools like Amplitude are only as useful as the quality of the events feeding them. I review your event taxonomy, property naming, user identification strategy, and instrumentation code to make sure your product data tells a coherent story.
- Event taxonomy and naming convention review
- User identification and alias strategy
- Event property completeness
- SDK implementation quality
- Funnel and retention data accuracy
Ad Platform Pixel Audit
Bad pixel data means your ad algorithms are learning from wrong signals. I audit every paid channel pixel — Meta, Google Ads, TikTok, Pinterest, LinkedIn — and check for correct firing, deduplication, and value passing.
- Meta Pixel and Conversions API audit
- Google Ads conversion tracking and enhanced conversions
- TikTok, Pinterest, and LinkedIn pixel validation
- Cross-pixel deduplication check
- Consent mode implementation review
A/B Testing Tool Audit
Testing tools like AB Tasty, VWO, Optimizely, and Google Optimize interact directly with your analytics data — and when misconfigured, they corrupt it. I check for flicker, SRM (sample ratio mismatch), and tracking conflicts between your testing and analytics tools.
- Test implementation and flicker (FOOC) review
- Sample ratio mismatch (SRM) detection
- Analytics integration validation (GA4, Adobe, Amplitude)
- Variant tracking and conversion event accuracy
Consent Management & Compliance Audit
With GDPR in Europe and evolving privacy regulations globally, non-compliant tracking is a legal and data quality risk. I review your consent management setup to ensure tags fire in accordance with user consent — and that your analytics data remains meaningful under consent restrictions.
- CMP (Consent Management Platform) configuration review
- Consent mode v2 implementation (Google)
- Tag firing logic mapped to consent states
- First-party data strategy assessment
DELIVERABLE SECTION
What You Get: The Audit Report
Every audit ends with a written report you can actually use. No vanity metrics, no generic recommendations. Just a clear, prioritized breakdown of what’s wrong, why it matters, and exactly what to do about it.
The report includes:
- Executive summary: the top issues and their business impact
- Severity-ranked issue log: critical, high, medium, and low priority findings
- Annotated screenshots and tag recordings for each issue
- Step-by-step fix recommendations your team or developer can implement
- Quick wins you can action immediately
- A 60-minute walkthrough call to go through findings together
You’ll leave the audit knowing exactly what’s broken, what it’s costing you, and what to fix first.
WHO I WORK WITH
Who I Work With
- E-commerce brands on Shopify, Shopify Plus, or custom stacks
- Digitally native vertical brands (DNVBs) with complex multi-channel attribution
- SMBs investing in analytics for the first time or after a platform migration
- Product and growth teams using Amplitude or Mixpanel for product analytics
- Marketing teams running paid media who need reliable conversion data
- Brands based in Europe (France, UK, Germany, Benelux) and the United States
POSITIONING SECTION
Why a Freelance Analyst Over an Agency?
Analytics audits from large agencies are often templated, surface-level, and delivered by someone who has never touched your specific stack. You get a polished PDF and a proposal to fix everything — at agency rates.
Working with me is different:
- You work directly with a senior specialist, not an account team
- I go deep — every tag, every event, every pixel in your stack
- The report is specific to your setup, not a checklist applied to every client
- I cover the full spectrum: GA4, Adobe Analytics, Amplitude, GTM, ad pixels, A/B testing, and consent
- Fast turnaround — audit reports delivered within 5 to 7 business days
- I work in English and French with clients across Europe and the US
FAQ SECTION — SEO LONG-TAIL KEYWORDS
Frequently Asked Questions
How long does a web analytics audit take?
For most SMBs and e-commerce brands, a full analytics audit takes 3 to 7 business days from access to delivery of the report. More complex setups — multiple analytics platforms, large GTM containers, multi-market sites — may take up to 10 business days. I’ll give you a clear timeline before we start.
What access do you need to run an analytics audit?
Typically: view access to your GA4 property, GTM container, and any other analytics platforms in scope; a test account or staging environment if available; and access to your Tag Assistant or equivalent for live tag recording. I never need — or want — admin access I don’t need.
Can you audit both GA4 and Adobe Analytics?
Yes. Many enterprise and mid-market brands run both platforms simultaneously, or are in the middle of a migration. I can audit either or both, and can advise on how to align data definitions across platforms.
What is a GTM audit and do I need one?
A GTM audit reviews every tag, trigger, and variable in your Google Tag Manager container. If your GTM container has been managed by multiple people, grown over years, or you’ve never had a formal review, there’s almost certainly dead code, conflicting triggers, or misfiring tags. Most brands with containers older than 12 months benefit significantly from a cleanup.
How is a web analytics audit different from an SEO audit?
An SEO audit reviews your site’s structure and content for search engine visibility. A web analytics audit reviews your tracking and measurement infrastructure for data accuracy. They’re complementary, but different disciplines. Some issues — like missing pageview events or incorrect canonical URL tracking — can affect both.
Do you fix the issues you find, or just report them?
I offer both. The audit itself is a standalone deliverable — a detailed report with prioritized fixes. Many clients then engage me to implement the fixes directly. Others hand the report to their in-house developer. Either works; the report is written so both a developer and a non-technical stakeholder can understand it.
Do you audit consent management and GDPR compliance?
Yes — consent management is part of every audit for European brands and increasingly important for US brands too. I review your CMP configuration, Google Consent Mode v2 implementation, and whether your tag firing logic correctly respects user consent choices.
CALL TO ACTION
Ready to Find Out What Your Data Is Really Telling You?
If you’re making decisions based on analytics data — running ads, optimizing conversion funnels, reporting to stakeholders — you need to know that data is accurate.
A web analytics audit is the fastest way to find out if it is, and the first step toward analytics you can actually trust.
📩 Book a free 30-minute discovery call.
Tell me about your stack, your platforms, and where the numbers don’t add up. I’ll scope the audit and tell you exactly what we’ll cover.