See Whether All Four Consent Signals Are Sent, and Which Tags Ignore Them
Enter a website and this free Consent Mode v2 checker looks for your consent banner, the consent default command, all four signals including ad_user_data and ad_personalization, consent settings inside your GTM container, the gcs and gcd values on live Google hits, and pixels that fire before any consent choice.
Consent Mode v2Free Checker Tool
OfficialStape PartnerEnter your website. The tool reads the page, opens your GTM container and records what the page sends before any consent choice.
The address you enter is sent to our server and to Google PageSpeed Insights, which load the page once. We keep a simple log of the address checked and the result. No personal details are saved unless you ask for the report by email.
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I set up Consent Mode v2 with your banner, GTM and server-side tracking, so tags respect consent and your Google Ads measurement keeps working.
Five areas, read from the page code, the GTM container and a live page load.
Which consent platform is installed, in the page or through GTM, and whether it has a Google integration.
ad_storage, analytics_storage, ad_user_data and ad_personalization, with the default value of each.
Whether the default is set before Google tags load, and whether wait_for_update is used.
Region-specific defaults, url_passthrough and ads_data_redaction.
Consent template tags, tags on Consent Initialization and tags that need additional consent.
The consent state on live Google hits, decoded signal by signal.
Advertising pixels and analytics tools that sent data before any choice was made.
Paste any gcs or gcd value from your browser’s Network tab to decode it.
Three steps, about a minute, no access to your accounts.
Paste your homepage or any page that loads your tags.
It reads the page and GTM container, then Google loads the page once with no banner click and records every tracking request.
You see which consent signals exist, which are missing and which tags fired before consent, each with a fix.
Google Consent Mode tells Google tags what a visitor has agreed to, so they adjust how they collect data. Consent Mode v2 added two signals, ad_user_data and ad_personalization, to the original ad_storage and analytics_storage. Google requires these signals for advertisers who use audiences, remarketing or conversion measurement for visitors in the UK and the European Economic Area.
A common mistake is to install a cookie banner and assume the job is done. If the banner does not send all four signals to Google, or sends them after the tags have already fired, your remarketing lists stop filling and conversions go missing.
Every Google Analytics and Google Ads request carries the visitor’s consent state. gcs is the older, short form: G100 means advertising and analytics storage are both denied, G111 means both are granted. gcd is the longer v2 form and encodes all four signals with one letter each. This tool decodes both. The gcd letter codes are not published by Google in full, so the decoder follows the mapping documented by the analytics community.
In basic mode, Google tags do not load until the visitor accepts. In advanced mode, tags load straight away and send cookieless pings while consent is denied, which lets Google model some of the missing conversions. If this tool sees Google hits with a denied state, you are running advanced mode.
It is a technical check, not legal advice. It loads your page once from Google’s servers and does not click your banner, so it shows the state before a choice. It cannot confirm that the correct update is sent after “Accept” or “Reject”. Check that in Google Tag Manager preview mode. If your defaults depend on the visitor’s region, people in the UK or EU may see different behaviour from this test.
What a correct setup looks like.
| Check | Good | Needs fixing |
|---|---|---|
| Signals | All four sent | Only ad_storage and analytics_storage |
| Default | Denied where opt-in is required | Granted everywhere |
| Timing | Default set before Google tags load | Default set after tags fire |
| Update | Sent when the visitor chooses | Never sent |
| Banner | Platform with a Google integration | Banner that only hides itself |
| Other pixels | Wait for marketing consent | Fire on page load |
| GTM | Default on Consent Initialization | Default on All Pages |
Confirm Google Ads can still build audiences and measure conversions.
Check a client’s banner setup before a campaign launch.
Verify defaults and gcd values after installing a consent platform.
See which tools collect data before a visitor agrees.
33 free tools for tracking, analytics, advertising and SEO. No login needed.
Estimate how many conversions ad blockers, browsers and consent hide from your reports.
Open the calculator →Check pixel IDs, events, advanced matching, deduplication and catalog readiness.
Open the Meta Pixel checker →Upload a GTM container export to document every tag, trigger and variable and find unused, duplicate and risky items.
Open the GTM analyzer →Find out if a site uses server-side GTM, a first-party loader and Conversions API.
Open the server-side checker →Hear from our clients. Loved by 600+ businesses worldwide.
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Version 2 adds two signals, ad_user_data and ad_personalization, to ad_storage and analytics_storage. Google needs them for audiences and remarketing in the UK and EEA.
It reads the consent default in your code and GTM container, and looks at the consent state on Google hits when Google loads your page once. That shows the state before any choice.
No. The tool cannot interact with your banner. Test updates in Google Tag Manager preview mode, where the Consent tab shows the state for every event.
Advertising storage and analytics storage are both denied. G111 means both are granted, G110 means advertising granted and analytics denied, and G101 the reverse.
Either your default really is granted everywhere, or you use region-specific defaults and the test location, Google’s servers, is treated as a region that does not need opt-in.
Google Consent Mode only controls Google tags. Other pixels need their own consent condition, such as an additional consent check in GTM or a trigger on your banner’s consent event.
No. It is a technical check of what your website does. Ask a privacy professional what the law requires for your business.
It is required by Google for visitors in the UK and EEA. Other regions have their own rules, and several US states have privacy laws that affect advertising data.
I am MD Niamul, a conversion tracking and web analytics specialist and an official Stape partner. I set up Consent Mode v2 with your banner and server-side tracking so tags respect consent and your campaigns keep measuring.
