GTM Variable Builder

GTM Variable Builder:

This tool makes it easy for you to highlight key parts of a website, such as text, product IDs, prices, or page titles. Simply select the content you're interested in and click on the extension's icon. To check what you've highlighted, head over to the JS console in Google Chrome.

Run the JavaScript code provided by the tool in the console. If it successfully captures your highlighted content, you can then use this in a custom Google Tag Manager variable, or in any other place where you need to submit product information, values, IDs, and so on.