dataslayer

CRX ID
ikbablmmjldhamhcldjjigniffkkjgpo
Status
Live on Store
Description from extension meta

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

Image from store
dataslayer
Description from store

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 [email protected]

Source lives at https://github.com/sean-adams/dataslayer if you'd like to contribute!

Latest reviews

Keyur Patel 2025-08-22

For the past few weeks, I have been experiencing an issue with Dataslayer. After some time, it stops displaying newly sent events. The issue is temporarily resolved when I restart DevTools and refresh the page; however, this also clears the previously loaded data layers.

Artyom Barov 2025-06-23

dataslayer is back! God Bless thank you for working on this guys

Ariana French 2025-06-09

So glad dataslayer is back! Best tool out there for debugging the data layer

Desmars Entreprise 2025-05-02

I love this extension, but suddenly it disapear from my dev tool bar, and i can't have it back anymore

Roshan Patel 2024-06-21

Data Slayer

Nick Vincent 2024-04-19

DONT USE THIS TOOL, it displays false results that didn't happen. Example: I'm on URL A and I click a button. -According to Google Tag Assistant (essentially the word of God), this click happened on URL A (duh, of course it did). -According to Dataslayer? Oh it happened on URL B, the place that the button click took me to. Thats literally impossible, but Dataslayer doesnt care. I didnt realize that the name meant that the data itself would be slayed until it's no longer usable. I've tried to capture my thoughts about how insane and ridiculous that is, but I keep failing to accurately capture it. It's nuts. This tool has major issues parsing events properly and the results is that it outright falsifies what happened and makes you question your sanity, until Google tag assistant confirms its not you, it's Dataslayer.

Joe Marshall 2023-11-30

Lets you see events from previous sessions, which is what I needed it for.

Joe Marshall 2023-11-30

Lets you see events from previous sessions, which is what I needed it for.

sammy boy 2022-05-02

if its got a Slayer background image, it worth it

sammy boy 2022-05-02

if its got a Slayer background image, it worth it

Bogdan Nazaruk 2022-03-28

The interface is really awkward. It would be nice to rework how the data is presented. Becomes hard to work with. But the backend is amazing. Just looked through the source to see how it gets all DEs. _satellite._container.dataElements Pretty cool. Didn't realize _satellite gave access to all DEs.

Bogdan Nazaruk 2022-03-28

The interface is really awkward. It would be nice to rework how the data is presented. Becomes hard to work with. But the backend is amazing. Just looked through the source to see how it gets all DEs. _satellite._container.dataElements Pretty cool. Didn't realize _satellite gave access to all DEs.

Steven Carr 2021-11-26

Works great! Easy to use and allows you to see quickly what's happening with your tagging and data.

Steven Carr 2021-11-26

Works great! Easy to use and allows you to see quickly what's happening with your tagging and data.

René Arias 2021-10-28

Me Encantaba el logo de Slayer como identificador de la extensión. Es una Herramienta Genial y simple!!!

Alex Moore 2021-09-23

i spent all day to find this extension. It works!

Alex Moore 2021-09-23

i spent all day to find this extension. It works!

Fanny Péraudeau 2021-08-11

This is a must have ! I recommend it to my colleagues and clients :)

Fanny Péraudeau 2021-08-11

This is a must have ! I recommend it to my colleagues and clients :)

Dan Anderson 2021-06-08

This dataLayers analyzer is unreadable and columns are too mashed

Dan Anderson 2021-06-08

This dataLayers analyzer is unreadable and columns are too mashed

Margaret Shelman 2021-04-07

Really easy to use. Helpful tool for quickly confirming which events are sent with GTM.

Margaret Shelman 2021-04-07

Really easy to use. Helpful tool for quickly confirming which events are sent with GTM.

Besir Redzepi 2021-03-02

Love it!

Tim Bolle 2021-02-24

We just identified an issue where this extension sometimes stops analytics tags from firing for Adobe Launched.

Tim Bolle 2021-02-24

We just identified an issue where this extension sometimes stops analytics tags from firing for Adobe Launched.

Brian Katz 2020-11-29

Simply Great Wow! I originally rated dataSlayer in 2015 I've found it indispensable all this time

Brian Katz 2020-11-29

Simply Great Wow! I originally rated dataSlayer in 2015 I've found it indispensable all this time

Matthias Borchert 2020-08-26

Hi this is so useful, thank you! Will it also cover App+Web Analytics soon? A+W is already very important in our daily work. Thanks!

Matthias Borchert 2020-08-26

Hi this is so useful, thank you! Will it also cover App+Web Analytics soon? A+W is already very important in our daily work. Thanks!

Ondřej Šubrt 2020-06-25

I cannot imagine my work without this great tool... I am using it every day and it really simplify my work. Thank you for that I will promote It everywhere I can.

Anonymous 2019-09-13

Worked great for my purpopses

Thomas Culetto 2019-08-22

Works well with Tealium

Thomas Culetto 2019-08-22

Works well with Tealium

James Buckley 2019-08-15

Sometimes using the GTM Preview mode feels a bit overkill for checking if some data layer push events or Google Analytics tags are present, which is where this extension comes in. It's an incredibly useful, no-nonsense tool which I always recommend to others when working with GTM.

James Buckley 2019-08-15

Sometimes using the GTM Preview mode feels a bit overkill for checking if some data layer push events or Google Analytics tags are present, which is where this extension comes in. It's an incredibly useful, no-nonsense tool which I always recommend to others when working with GTM.

Daniel Valide 2019-05-15

nice and very helpful

Daniel Valide 2019-05-15

nice and very helpful

Eu Gen 2018-10-15

Please add "- adds advertisement to google search results" to the feature list! Otherwise it stays a secret feature and no one will ever know this nice feature exists.

Eu Gen 2018-10-15

Please add "- adds advertisement to google search results" to the feature list! Otherwise it stays a secret feature and no one will ever know this nice feature exists.

Alistair Johnstone 2018-05-01

Use this all the time for debugging GA and GTM

Alistair Johnstone 2018-05-01

Use this all the time for debugging GA and GTM

Timothy Smith 2017-12-28

Perfect for testing any on site Google Analytics events or Google Tag Manager configurations. Easy to work with interface and very accurate.

Timothy Smith 2017-12-28

Perfect for testing any on site Google Analytics events or Google Tag Manager configurations. Easy to work with interface and very accurate.

Nick Guebhard 2017-11-14

Much more accurate than GTM Preview and Debug mode. Thank you!

Nick Guebhard 2017-11-14

Much more accurate than GTM Preview and Debug mode. Thank you!

Aitor Alejandro 2017-10-20

Sencilla y práctica. Para poder observar el objeto dataLayer de forma visual sin necesidad de inspeccionarlo a través de la consola.

Paul Cikatricis 2017-03-17

It's wonderful but recently it has stopped working on my local dev site. It's showing the GTM instance but not the GA. The same code works and shows just fine on production site. Not sure what this might be as it worked perfectly before and I don't recall changing anything. Other GA debugging tool called 'GA Debugger' still works fine. Otherwise a really helpful tool.

Paul Cikatricis 2017-03-17

It's wonderful but recently it has stopped working on my local dev site. It's showing the GTM instance but not the GA. The same code works and shows just fine on production site. Not sure what this might be as it worked perfectly before and I don't recall changing anything. Other GA debugging tool called 'GA Debugger' still works fine. Otherwise a really helpful tool.

Ajinkya Mhatre 2016-12-08

simply superb!

Statistics

Installs
70,000
Market
Chrome Web Store
Category
Rating
4.56 (84 votes)
Last update
2025-06-09
Version 2.0.0
Languages