OCMOD version for opencart.
Free installation included.

Google Tag Manager is a tool that allows you manage and deploy marketing tags (snippets of code or tracking pixels) on your website (or mobile app) without having to modify the code.

Compatibility

3.0.0.0, 3.0.1.1, 3.0.1.2, 3.0.2.0, 3.1.0.0_b, 3.0.3.0, 3.0.3.1, 3.0.3.2, 2.0.0.0, 2.0.1.0, 2.0.1.1, 2.0.2.0, 2.0.3.1, 2.1.0.1, 2.1.0.2, 2.2.0.0, 2.3.0.0, 2.3.0.1, 2.3.0.2