dataslayer

by Sean Adams · dataslayer.org · Developer Tools

FeaturedEstablished publisherManifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Debug and test tag management (Google Tag Manager, DTM, Tealium) and analytics implementations.

Users

70K

0 in 30 days

Rating

4.5 / 5

−0.05 in 30 days

Ratings

0 in 30 days

Store rank

#2,832

#2,485 among extensions

Version

2.0.0

updated 9 Jun 2025

Users

monthly, 3 years

Latest, 15 Oct 2026: 70,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years

Latest, 15 Oct 2026: 83 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 dataslayer

dataslayer adds a panel to Chrome Developer Tools that monitors tag management data layers and displays changes in an easy-to-read, user-friendly format. Supported TMS/variables include: - Google Tag Manager dataLayer variable - Adobe Launch rules and data elements - Adobe DTM page load rules and detection - Tealium data layer - TagCommander data layer - custom data layers (any variable represented as a JavaScript object) dataslayer supports multiple data layers / GTM containers on a single page, including those in embedded iframes. dataslayer also decodes and displays tags (including pageviews, variables, and click events) from: - Google Analytics (including App + Web, Universal Analytics / analytics.js, dc.js, and ga.js) - Adobe Analytics / Omniture SiteCatalyst - Floodlight For feature requests and bug reports, please either use the 'Send Feedback' option in the Chrome Web Store or reach out directly to info@dataslayer.org Source lives at https://github.com/sean-adams/dataslayer if you'd like to contribute!