Daniils Visnakovs
DE

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Is your Consent Mode v2 clean — or burning conversions?

Enter a URL, start the scan: in seconds you see which trackers your site loads, whether a cookie banner is detectable and whether Consent Mode v2 sits right per signal — with a grade A to F and the concrete consequences for your Google Ads account, not just the compliance angle.

Check your website now What is Consent Mode v2?
  • 1 Mio. €+ Werbebudget verantwortet
  • Ex-Google Performance-Berater
  • 120+ Kunden im DACH-Raum

The public HTML source of your homepage is checked. When you start the scan, the URL and result are transmitted to me — so I can reach out if there are critical findings. No public directory, no sharing.

Methodology

What the scan checks

Tags & pixels

GTM, GA4, Google Ads, Meta, TikTok, LinkedIn, Pinterest, Hotjar and Clarity — trackers embedded directly in the source are detected and classified.

Cookie banner (CMP)

Detection of 16 common consent tools — from Cookiebot and Usercentrics to Borlabs and Finsweet. Trackers without a CMP are the biggest warning risk.

Consent Mode v2

Is gtag("consent","default") set? Per signal — ad_user_data, ad_personalization, ad_storage, analytics_storage — I show you the default state. Missing v2 means your Google Ads account loses modeled conversions.

Note: The check is a technical analysis and not legal advice.

Consent Mode v2

The four signals your Google Ads account needs

Since March 2024 Google requires Consent Mode v2 in the EEA for remarketing and conversion measurement. Your tag setup must tell Google, before any tracking, whether consent was given — via four signals in the gtag("consent","default", …) call. If they are missing, that is not just a compliance issue: your account loses the signals Google uses to model missing conversions. These are exactly the four signals this check reads per state.

ad_user_data Mandatory since 03/2024

Allows Google to process user data — the basis for enhanced conversions. If it is missing, your conversion uploads and data matching run empty.

ad_personalization Mandatory since 03/2024

Decides whether a person may enter remarketing and personalised audiences. Without this signal your lists stop filling — remarketing quietly starves.

ad_storage Conversion attribution

Controls the ad cookies Google uses to link click and conversion via GCLID. If it defaults to "granted" before consent, tracking fires too early — a warning risk and distorting.

analytics_storage Measurement

Controls the GA4 cookies. Must default to "denied" before opt-in; afterwards GA4 delivers the reach and behaviour data your reporting relies on.

The rule is simple: before consent all four default to "denied", after opt-in they switch to "granted" via gtag("consent","update", …). If a signal starts on "granted" it fires before consent — if it is absent entirely, your setup reports nothing to Google. Both cost conversions. For Webflow & co. there is my free Finsweet Consent Mode v2 template.

Staying honest

What a static scan cannot see

This check reads the source of your homepage. That is enough to find the most common mistakes — but the decisive behaviour only happens at runtime. Honestly, a few things stay invisible:

  • Does the CMP set the consent defaults via JavaScript? Then v2 is not in the HTML but still applies — only a live test shows what Google actually receives.
  • Do the tags in GTM really fire only after opt-in? What happens inside the container is invisible to any source scanner — only preview mode and the network tab before the banner click reveal it.
  • Do your Google Ads conversions count once, twice or not at all? Deduplication, enhanced conversions and server-side setups only show in the real data flow.
  • Is call tracking running for your phone leads — often the most valuable and most invisible channel of local accounts?

That is exactly what I do in the personal tracking audit: I load your site in the browser, click through the banner and measure which tags fire before and after consent — including GA4, Google Ads and server-side checks. In the end you know how many conversions your setup really loses and what to do about it.

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FAQ

Frequently asked questions about the tracking check

What exactly does the tracking check analyse?
It loads the HTML source of your homepage and analyses: Which trackers are embedded (GTM, GA4, Google Ads, Meta, TikTok, LinkedIn, Hotjar, Clarity and more)? Is a cookie banner/CMP detectable? Is Google Consent Mode v2 set with the correct defaults? From this it produces a grade from A to F with specific recommendations.

Is this legal advice?
No. The check is a technical analysis and replaces neither a lawyer nor a data protection officer. It shows you the technical risks that most commonly trigger warnings in practice — the legal assessment of your specific case belongs in the hands of a lawyer.

Why can a static analysis not see everything?
A lot only happens at runtime: CMPs set consent defaults via JavaScript, GTM loads tags afterwards, server-side setups are invisible. A complete picture comes only from a live test in the browser including consent interaction — which is exactly what I do in the personal tracking audit.

What is Consent Mode v2 and why is it mandatory?
Google's standard for transmitting the consent status to Google from your tag setup. Since March 2024 Google requires the v2 signals ad_user_data and ad_personalization — without them you lose remarketing lists and conversion data in Google Ads. For Webflow & co. there is my free Finsweet template in the GTM configurator.

What do ad_user_data and ad_personalization mean?
These are the two mandatory Consent Mode v2 signals. ad_user_data controls whether Google may process user data (e.g. for enhanced conversions); ad_personalization whether a person may enter remarketing and personalised audiences. Both must default to "denied" before consent and switch to "granted" after opt-in. If they are missing, Google cannot model missing conversions.

What does a wrong consent setup cost my Google Ads account?
Three things, concretely: you lose modeled conversions (Google cannot extrapolate on rejection), your remarketing lists no longer fill correctly, and Smart Bidding optimizes on incomplete signals — toward the wrong clicks. In accounts with high rejection rates this quickly means double-digit percentages of invisible conversions. The check shows you statically where it breaks; the live test in the audit measures the real loss.

Can I check Consent Mode v2 myself?
Yes. Open your browser dev tools, type "dataLayer" in the console and look for the consent-default entry — or use the Google Tag Assistant and watch the gcs and gcd parameters in the Google requests. This check takes the first step for you: it reads the gtag("consent","default") call from the source and tells you, per signal, what is set.

What happens to the scanned URL and the result?
The checked URL and the scan result are sent to me by email — so I can reach out directly if there are critical findings and help you fix them. There is no public database, no directory and no sharing with third parties.

Grade worse than you hoped?

In most audits I find tracking that fires before consent, missing Consent Mode v2 or conversions that count twice or not at all. All fixable — usually within a few days.

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