TagHound is a B2B product built for web developers, marketers, and analytics specialists.

Does TagHound have a free plan?

Yes — TagHound is free to use.

What platforms does TagHound run on?

TagHound runs on the web and embeddable surfaces.

Is TagHound still maintained?

Unverified. TagHound has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

TagHound is developed by ONBET.

How long has TagHound been around?

TagHound first shipped in 2025.

Back to the index

TagHound

Name: TagHound
Author: ONBET

mozilla.orgBrowser DevTools & extensions

TagHound is a Firefox browser extension that inspects Google Analytics, Google Tag Manager dataLayer events, advertising pixels, and other tracking implementations. It displays detected events and pixels in DevTools and applies validation rules across supported analytics and advertising platforms.

FreeWebEmbeddable

Visit mozilla.org

Overview

8 features

In the Browser DevTools & extensions space, TagHound takes a focused approach. It focuses on validating analytics implementations, tag-manager dataLayer events, and advertising pixels across websites. TagHound is a B2B product aimed at web developers, marketers, and analytics specialists. TagHound is free to use. TagHound is available on the web and embeddable surfaces.

ONBET builds and maintains TagHound, and it first shipped in 2025. Key capabilities include analytics debugging, dataLayer viewer, and pixel detection. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Analytics debugging
DataLayer viewer
Pixel detection
Event inspection
Error validation
DevTools panel
Google Analytics support
Google Tag Manager support

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed10 Sep · 23:05 UTC
TagHound - Analytics/GTM/Pixel verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about TagHound

What does TagHound do?: TagHound focuses on validating analytics implementations, tag-manager dataLayer events, and advertising pixels across websites. It is catalogued under Browser DevTools & extensions on PulseGate.
Who is TagHound for?: TagHound is a B2B product built for web developers, marketers, and analytics specialists.
Does TagHound have a free plan?: Yes — TagHound is free to use.
What platforms does TagHound run on?: TagHound runs on the web and embeddable surfaces.
Is TagHound still maintained?: Unverified. TagHound has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
Who makes TagHound?: TagHound is developed by ONBET.
How long has TagHound been around?: TagHound first shipped in 2025.
What languages does TagHound support?: The interface is available in 32 languages, including Czech, German, and Greek.

At a glance

Pricing: Free
Platforms: Web
Built for: web developers, marketers, and analytics specialists
Model: B2B
Solves: Validating analytics implementations, tag-manager dataLayer events, and advertising pixels across websites.

Registered as

Firefox Add-ons: taghound-analytics-gtm-pixel

Developer

ONBET

Index record

Indexed: 10 Sep 2026
Lifecycle: Alive
Last seen: 10 Sep 2026

Identity audit (13)

Slug: taghound-analytics-gtm-pixel-mozilla-org
Lifecycle state recorded: 10 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 10 Sep 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 10 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/taghound-analytics-gtm-pixel

Ship this? Send a correction — no account, and you get a link to follow it.

Similar projects

Closest matches by what these projects do

Pixel Tag Detectormozilla.org