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Marketing

_gcl_au cookie

Set by Google Ads.

What it does

Used by Google AdSense for experimenting with advertisement efficiency.

Cookie name
_gcl_au
Category
Marketing
Provider
Google Ads
Duration
3 months
Data source
Kukie.io

Consent

Needed in the EU and the UK

_gcl_au is in the Marketing category. In the EU and the UK, it needs the visitor's consent before it is set. Under California's CCPA, visitors can opt out of the sale or sharing of their personal information, including for cross-context behavioural advertising.

GDPR and ePrivacy (EU)
Prior consent is needed before setting _gcl_au. Advertising and tracking cookies are never covered by the strictly necessary exemption.
UK GDPR and PECR
Consent is needed before setting _gcl_au.
CCPA and CPRA (California)
Setting _gcl_au for cross-context behavioural advertising counts as sharing personal information: offer a "Do Not Sell or Share My Personal Information" opt-out and honour the Global Privacy Control signal.

Managing _gcl_au with a consent banner

A consent banner can keep the script that sets _gcl_au waiting until the visitor accepts marketing cookies. Kukie.io's cookie scanner finds _gcl_au and sorts it into a category. The banner holds back known trackers by default, and any other script you tag with its category waits too.

Learn more about script blocking

Related cookies
Your own website

Find every cookie your website sets, sorted into categories.

Scan your website

Ask before cookies like this are set.

Kukie.io finds the cookies on your website, sorts them into categories and holds back known trackers until visitors agree.

Disclaimer

Kukie.io provides tools to collect and record consent. It is not legal advice, and using it does not by itself make a website compliant with any law.

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