Release notes for Google Tag Manager
August 1, 2025
New custom template JavaScript API to read Google Analytics client and session cookies
The readAnalyticsStorage sandbox API is now available. This client-side JavaScript API allows developers to read client and session IDs in a custom template. Previously, developers relied on reverse-engineering or custom parsers to understand Google-set cookie formats, which wasn't a reliable approach. It was prone to breaking whenever Google Analytics updated its cookie formats.
Now, the readAnalyticsStorage API allows Tag Manager users to safely read the …
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Release notes
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Announcement: Google tag and Tag Manager
The Google Tag Manager team is excited to announce that you will be able to deploy a Google tag within Tag Manager starting in early September. The Google tag will replace the Google Analytics: GA4 Configuration tag and comes with the following benefits: Enhanced integration with other Google products: The Google tag will load with the ability to send data to multiple Google product destinations. For example, Google Ads users will be able to configure their Google tag to send conversions via Tag Manager. Settings variables: The Google tag and GA4 Event tags will allow you to reuse parameters a…Read more -
Tag Manager for mobile apps – what's new
Implementation of Tag Manager for mobile apps works in tandem with the Firebase SDK. Google Tag Manager uses Google Analytics for Firebase’s events, params, and user properties as its input. Visit the Tag Manager developer documentation to learn how to get started with Android and iOS. Feature updates Container type: When you create a new mobile app container in Tag Manager, you will be asked to select a container type. For the most future-compatible setup for your mobile apps, choose the standard “iOS” or “Android” container types (which work with Firebase), not the “Legacy” types. App config…Read more -
Updates to consent mode for traffic in European Economic Area (EEA)
This article is for customers who use Google's online and offline solutions and receive data from end users in the European Economic Area (EEA). Google Ads Tutorials: Maintain tag-based remarketing by capturing consent For subtitles in your language, turn on YouTube captions. Select the settings icon at the bottom of the video player, then select "Subtitles/CC" and choose your language. As a part of Google’s ongoing commitment to a privacy-centric digital advertising ecosystem, we are strengthening the enforcement of our EU user consent policy (EU UCP). Advertisers must adhere to the EU UCP to…Read more