GTM Preview Copy Tool

Adds a copy button to each GTM Preview window dataLayer card, for copying data in specific formats.

Shows a small clipboard icon in the GTM Preview window dataLayer cards when moused-over so that the data can be copied in the following formats: - Text (exactly as shown in the card) - JSON (creates a valid equivalent JSON object) - DL.push (creates an example dataLayer push to output the same data) - Excel (tab delimited so that it can be copied into a 2-column Excel table) Change the copy type by clicking on the Extension icon in the toolbar. Some known issues: - If the Preview Pane loads for a site in an iframe, the clipboard button doesn't appear. - The copy type pop-up window looks ugly as s**t. To Do: - Fix the above issues. - Make the icon become "enabled" when the extension loads successfully, something which is currently indicated by a console log. Github - https://github.com/JibbyJames/GTM-Preview-Copy-Tool