Agence Efficads
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Tracking & Measurement

Ad tracking that's accurate and compliant: GA4, GTM, Conversion API

Rigorous conversion tracking is the foundation of every high-performing campaign. We set up and optimize your measurement stack so every euro you spend is tracked with precision.

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  • GA4
  • Google Tag Manager
  • Conversion API
  • Consent Mode v2
  • Server-side

Everything included in your tracking setup

From auditing your existing tracking to full validation: nothing slips through the cracks.

  1. Audit of your existing tracking

    Full analysis of your current setup: missing data, misconfigured events, duplicates, and data leaks.

  2. GA4 setup

    Complete Google Analytics 4 configuration: custom events, conversions, audience settings, and connections to your ad platforms.

  3. Google Tag Manager

    GTM container setup and organization: tags, triggers, variables. A clean architecture that stays maintainable over time.

  4. Meta & TikTok Conversion API

    Server-side Conversion API (CAPI) setup for Meta and TikTok: recovering conversions lost to ad blockers and iOS restrictions.

  5. Consent Mode v2

    Consent Mode v2 implementation for GDPR-compliant data collection. Conversion modeling compensates for signal loss when cookies are declined.

  6. Full testing & validation

    Every event validated in real-world conditions, complete tagging plan documentation, and access to your monitoring dashboards.

The path of a conversion, measured end to end.

Every step is a place where data can get lost. Tracking means holding on to it all the way, so the algorithms bid on what actually pays.

  1. The ad Google, Meta, TikTok, LinkedIn
  2. The click the visitor lands on your page
  3. Consent Consent Mode v2 respects their choice
  4. The conversion form, call, purchase
  5. Google Tag Manager tags, triggers, variables
  6. GA4 and Conversion API browser side and server side
  7. Back to the platforms bidding runs on real conversions

How we set up your tracking

  1. 01

    Tracking audit

    Full assessment of your current setup, pinpointing the gaps and missing data that skew your decisions.

  2. 02

    Tagging plan

    We define the events to track, the priority conversions, and the audiences to build based on your business goals.

  3. 03

    Implementation

    GA4, GTM, Conversion API, and Consent Mode setup: with a clean integration no matter what technology you use.

  4. 04

    Validation & QA

    Every event tested end to end in real-world conditions, tagging plan documented, and dashboard access handed over.

What sets us apart

  1. Data-first approach

    No campaign without reliable tracking. We lock down measurement before we optimize: because optimizing on bad data is just burning budget.

  2. GDPR compliance built in

    Consent Mode v2 configured by default. Your data collection complies with European regulations without sacrificing signal quality.

  3. Complete documentation

    A documented tagging plan and direct access to your monitoring dashboards. You know what's tracked and why: no black box.

Frequently asked questions about tracking

Why is tracking so important for my campaigns?

Without accurate tracking, you can't tell which campaigns, ads, and keywords actually generate leads or sales. You're optimizing blind. Solid tracking also helps Google's and Meta's algorithms learn faster and serve your ads to the people most likely to convert.

What is the Conversion API and why do I need it?

The Conversion API (CAPI) is a direct connection between your server and the ad platforms (Meta, TikTok). Unlike traditional browser-side pixels, it isn't blocked by ad blockers or affected by iOS restrictions. It typically recovers 20 to 40% of the conversions lost when relying on the pixel alone.

Is Consent Mode v2 mandatory?

Since March 2024, Google requires Consent Mode v2 for advertisers in Europe who want to use conversion modeling and signal-based audiences. Without it, you lose a significant share of visibility into your conversions and your remarketing audiences become less complete.

Do you work with every CMS (WordPress, Shopify, etc.)?

Yes. We work with WordPress, Shopify, Webflow, Wix, custom-built sites, and any other environment. In most cases the setup runs through Google Tag Manager, which lets us work independently of your site's technology.

How long does the tracking setup take?

A standard setup (GA4 + GTM + Conversion API for one platform) takes 5 to 10 business days, from audit to final validation. For more complex setups involving multiple platforms and server-side tracking, allow 2 to 3 weeks.

Finally measure what actually works

Reliable tracking changes everything: for your algorithms, your decisions, and your ROI. Book a call to review your current setup.

Get a free audit of your current campaigns, or an acquisition strategy if you are starting from scratch. Book a call below, or message us on WhatsApp. Reply within one hour, no commitment.