Comments on: What is gtag.js and when should I migrate?

By: Paul Harris

Paul Harris — Mon, 31 Dec 2018 23:48:45 +0000

Thank you. Another scenario (one that I am in) is: you are using analytics.js in your website and want to add conversion tracking from Google Ads. Google Ad provides a snippet using gtag.js so that your website can tell it when a Google Ad has led to a conversion (eg purchase).

In that case it makes sense to convert to gtag.js rather than use two libraries (analytics.js and gtag.js) in parallel.

By: Ultimate Guide to Setting up Enhanced Ecommerce Tracking - Reflective Data

Ultimate Guide to Setting up Enhanced Ecommerce Tracking - Reflective Data — Tue, 29 May 2018 11:14:32 +0000

[…] the hood, GTM will take care of this. Currently, GTM is using analytics.js but that might change to gtag.js quite soon. Making this transition yourself is quite a lot of […]

By: Silver Ringvee

Silver Ringvee — Mon, 29 Jan 2018 13:45:37 +0000

In reply to Przemek. That is correct, GTM still uses analytics.js (which means it is still a perfectly valid option), and they will most probably start using gtag.js once it has been public for a while and all the bugs have been fixed. But yeah, when using GTM, you can leave dealing with the version to Google.

By: Przemek

Przemek — Wed, 24 Jan 2018 21:08:42 +0000

You mentioned that GTM implementation handles potential issues with GA snippet version. But maybe you know if standard UA tag in GTM evokes currently gtag.js or still analytics.js library? It seems to me that it still evokes analytics.js.
Which does not change the fact that it does not matter to most UA implementations via GTM 😉