Combine the use of Google Tag Manager with automated cookie blocking by Cookiebot to get the best of both worlds. Implementation is quick and easy and allows you to:
- Control tags and cookies based on the user's consent, using triggers in Google Tag Manager AND
- Let Cookiebot automatically control all other cookies not set by Google Tag Manager, based on the consent given.
To achieve this, make sure that the Cookiebot script is not executed by Google Tag Manager. So either remove the Cookie Consent tag or it's trigger. Furthermore:
- Make sure that Google Tag Manager is the very first script to load on your website.
- Mark your Google Tag Manager script tag with: data-cookieconsent="ignore"
This will ensure that Google Tag manager will always be allowed load. - Insert the Cookiebot script with automatic cookie blocking immediately after Google Tag Manager script.
Here's an example of how this could look:
In Google Tag Manager, to control your tags, implement a trigger for each of the three categories.
If you're modifying a previous Cookiebot implementation:
Change the event name for each tag from cookieconsent_category to cookie_consent_category
If you're creating new triggers:
- From the menu on the left, select Triggers
- Create a new trigger by clicking New and choose Custom Event
- Under Event name, for each of the categories, enter the corresponding value:
Preferences : cookie_consent_preferences Statistics : cookie_consent_statistics Marketing : cookie_consent_marketing - Make sure All custom events is checked under This trigger fires on
- Click Save to create the trigger.
Assign these triggers to the tags you wish to control based on the user's consent. For example, assign the cookie_consent_statistics trigger to your Google Analytics tag like here:
If you adjusted existing triggers, you don't need to assign them again to the tags they were assigned to.
You may also implement the use of Google Tag Manager with manual blocking and implementation of prior consent for any remaining elements outside your tag manager. Use the script for manual cookie blocking and follow our guide here for setting up Google Tag Manager implementation
Comments
9 comments
When would you use this installation mode versus the other one outlined here: https://support.cookiebot.com/hc/en-us/articles/360003793854
We are having issues of Pardot tracking working with Cookiebot -- will changing the deployment help with that?
Great guide, thanks! With this implementation I found that the GTM Preview & Debug Mode stops working as it seems to block the GTM preview JS library from loading in the browser. What do you recommend?
Same issue :(
Plus when i agree with the cookies and go back to the page with the video, it doesnt show up anymore?
As pointed out above, this setup seems to break GTM's "Preview and Debug mode". The debug panel seems to open, but it remains an empty box.
In the browser's dev-tools, it seems the loading of the "https://tagmanager.google.com/debug/debuguiApp-bundle.js" script is cancelled, and I am guessing this is due to Cookiebot's automatic blocking behaviour?
Since that script is loaded by GTM behind the scenes, it is not possible to allow it with the `data-cookieconsent="ignore"` attribute. Is there any other way to add exceptions to Cookiebot's automatic blocking ? Or can automatic blocking with GTM be implemented in another way, that does not break the preview and debug mode?
Using this implementation as far as I can tell only fires your tags after the consent dialog is submitted (only on the first page the consent is provided on). In my tests, if you set your cookie preferences and then navigate to another page the cookie_consent_ events don't fire. Am I missing something?
I got around this by adding the following code after my cookiebot script on each page
<script>
function CookiebotCallback_OnAccept() {
if (Cookiebot.consent.preferences)
dataLayer.push({'event':'cookie_consent_preferences'});
if (Cookiebot.consent.statistics)
dataLayer.push({'event':'cookie_consent_statistics'});
if (Cookiebot.consent.marketing)
dataLayer.push({'event':'cookie_consent_marketing'});
}
</script>
Another thing worth noting is that if you are pushing the cookie_consent_ events manually, as described above, and triggering your Google Analytics tracking script using these events in Google Tag Manager, make sure to configure the Tag Firing Options (Under Advanced Settings) to 'Once per page'. Otherwise, the GA script will fire twice causing two page hits instead of one.
Hi Matthew, would that script work in a custom HTML tag in tag manager that triggers on all pages then?
Hi,
I have followed same steps described in this page and implemented in drupal website.
And i could see JS variable "Cookiebot.consent" is set according user accept values and "dataLayer" event also triggering perfectly in all pages.
Does this means its working fine? How can i confirm that GTM works perfectly after user accepts statistics consent and GTM doesnt when user doesn't provide consent?
Benjamin:
I wouldn't execute that script via Tag Manager, I just placed it immediately below my Cookiebot script directly in the site's head code. Worth double-checking my observations are correct (cookie_consent_ events not firing on subsequent pages) on your own site too.
Another thing worth noting is that if you are pushing the cookie_consent_ events manually as described above and triggering your Google Analytics tracking script using these events in Google Tag Manager make sure to configure the Tag Firing Options (Under Advanced Settings) to 'Once per page'. Otherwise, the GA script will fire twice causing two page hits instead of one.
Manjunath:
If you followed the steps above, Cookiebot is likely blocking Google's Tag Manager preview functionality (if not let me know how you are achieving that.)
I use the Ghostery and EditThisCookie Chrome extensions to monitor which tags and cookies are firing and when. Just make sure to turn off Ghostery's ad-blocking features or it will block your tags and cookies itself.
Also, using Google Tag Assistant recordings is a useful way to see which tags are firing and what is happening with your Google Analytics tracking.
Hi Matthew,
You don't need to include that script to each page. The Cookiebot script pushes these events to the dataLayer on each page when the script loads.
If you push the events again, your triggers will also fire your tags again.
We're also aware that the preview doesn't work if you combine Cookiebot with automatic cookie blocking and Google Tag Manager. The reason for this is that you'll be referring to events that aren't known in Google Tag Manager, since they'll be pushed to the dataLayer outside of Google Tag Manager.
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