Tag Assistant Companion

Tag Assistant Companion

The Tag Assistant Companion extension works with Tag Assistant to help troubleshoot installation of gtag.js and Google Tag Manager.

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What is Tag Assistant Companion?

Tag Assistant Companion is a popular Chrome extension by Google. This extension has 551,285 weekly active users, an average user rating of 2.63, and is most similar to Tag Manager Assistant and Tag Assistant for Conversions Beta. The latest version,, was updated a month ago.

Stats date:
By: Google
Rating: 2.63 (27)
Version: (Last updated: 2023-04-26)
Creation date: 2021-01-08
Manifest version: 3
  • scripting
  • tabs
  • webNavigation
Host permissions:
  • <all_urls>
Size: 17.21K
Email: Click to see
Risk impact: High risk impact
Risk likelihood: Moderate risk likelihood

Other platforms

Not available on Firefox
Not available on Edge
When the Chrome extension is present, it enables additional features for Tag Assistant including debugging iframes and debugging multiple windows from the same debug session.
User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Useful for development and QA
  • Provides additional features for GTM preview mode
  • Clear and elegant UI
  • Confusing name
  • Some users don't understand its purpose
Most mentioned
  • Useless
  • Not connecting to website
  • Just takes you to tagmanager preview
  • New GTM debug mode sucks
  • Doesn't work accurately
View all user reviews
Risk impact

Tag Assistant Companion requires a number of risky permissions that can potentially harm your browser and steal your data. Exercise caution when installing this extension. Review carefully before installing. We recommend that you only install Tag Assistant Companion if you trust the publisher.

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypass your security settings, and access your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Risk likelihood

Tag Assistant Companion is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this extension.

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Chrome extension, especially ones with higher risk impact and/or higher risk likelihood.

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Promo images
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Tag Assistant Companion small promo image
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Similar extensions

Here are some Chrome extensions that are similar to Tag Assistant Companion:

Tag Manager Assistant Tag Manager Assistant
Publisher: Damien Vingrief
User count: 81,580
Rating: 50
Tag Manager Assistant allows to control custom data from a Web page.
Tag Assistant for Conversions Beta Tag Assistant for Conversions Beta
Publisher: Google
User count: 48,754
Rating: 18
Tag Assistant for Conversions helps validate your website implementation used to measure conversions for Google Ads.
Tag Assistant Legacy (by Google) Tag Assistant Legacy (by Google)
Publisher: Google
User count: 2,782,296
Rating: 1,149
Tag Assistant helps to troubleshoot installation of various Google tags including Google Analytics, Google Tag Manager and more.