_gcl_au Cookie

What does the _gcl_au cookie do?

_gcl_au cookie stores and tracks conversions. Provided by Google Tag Manager to experiment advertisement efficiency of websites using their services. _gcl_au _gcl_au cookie is used by Google AdSense to test the effectiveness of advertisements on web pages.

Why this cookie matters

This cookie is commonly used by ascott-star-rewards , google-adsense , google-analytics , google for marketing purposes – such as tracking usage behaviour, optimising experience, or enabling marketing functionality.

Because it's categorised as marketing, many jurisdictions require that users give explicit consent before it can be activated. If blocked or denied by the visitor, personalised ads or retargeting features may not function properly.

How Cookifi helps you manage this cookie

Cookifi automatically detects cookies like _gcl_au, categorises them, and gives you full control over when and how they load - based on your users' consent choices.

Whether you manage consent via Google Tag Manager, consent APIs (like the Shopify or WordPress Consent API), or prefer automatic cookie blocking or manual script control, Cookifi integrates seamlessly into your stack.

Built for technical marketers, business owners and developers, Cookifi offers flexibility without sacrificing compliance.