GTM Tab Marker

by Datamine · datamine.dk · Functionality & UI

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Distinct favicons for Google Tag Manager tabs: one colour per container, filled for the container UI, outlined for preview.

Users

+4 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#284K

#235K among extensions

Version

1.0.2

updated 15 Sep 2026

Users

monthly, 1 months

Latest, 15 Oct 2026: 4 usersMove the mouse over the chart for any month

Ratings count

monthly, 1 months

Latest, 15 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About GTM Tab Marker

If you work in Google Tag Manager, you know the problem: a web container, a server container, and a preview window for each – four tabs, all with the same little GTM icon. Every switch means squinting at tab titles or clicking through until you land on the right one. GTM Tab Marker fixes that. Each container gets its own colour, and its preview window gets the same colour. Container tabs show a solid icon, preview tabs an outlined one, and a letter tells you whether it's a server (S) or web (C) container. The result: you see at a glance which tab belongs to which container – and whether it's the container or its preview. No more guessing, no more opening the wrong tab. Colours are chosen automatically. If you prefer your own, you can pick a colour and a letter for any container on the options page. Works with the Tag Manager UI, Tag Assistant preview, and server-side preview on your own tagging server. Nothing is collected or sent anywhere. Your colour choices are stored in Chrome only.