Who should use TabColorizer?

TabColorizer is a consumer product built for developers and QA testers.

Does TabColorizer have a free plan?

Yes — TabColorizer is free to use.

What platforms does TabColorizer run on?

TabColorizer runs on the web and embeddable surfaces.

Is TabColorizer still maintained?

Unverified. TabColorizer 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.

What are alternatives to TabColorizer?

Similar projects tracked by PulseGate include Tab Colors, TabColor, and ColorTabs For Firefox.

Who develops TabColorizer?

TabColorizer is developed by CBIndustries.

When did TabColorizer launch?

TabColorizer first shipped in 2025.

Back to the index

TabColorizer

Name: TabColorizer
Author: CBIndustries

mozilla.orgBrowser DevTools & extensions

TabColorizer is a Firefox extension that adds customizable colored borders to websites so users can visually distinguish test, training, and production environments. It supports wildcard domain rules, themes, per-rule border customization, JSON import and export, accessibility features, and multiple languages.

FreeWebEmbeddable

Visit mozilla.org

2alternatives

10features

2025since

Overview

10 features

TabColorizer is a Browser DevTools & extensions project. It focuses on preventing confusion between test, training, and production websites while working in a browser. It is built as a consumer product for developers and QA testers. It is available for free. It runs on the web and embeddable surfaces.

It is developed by CBIndustries, and it first shipped in 2025. Key capabilities include domain matching, wildcard rules, and colored borders. The interface is available in 32 languages, including Czech, German, and Greek.

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

Domain matching
Wildcard rules
Colored borders
Custom themes
Border customization
Quick-add domains
JSON import/export
Keyboard navigation
Screen reader support
Multilingual UI

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

Indexed17 Sep · 21:53 UTC
TabColorizer - Tabs einfärben verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about TabColorizer

What is TabColorizer?: TabColorizer focuses on preventing confusion between test, training, and production websites while working in a browser. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use TabColorizer?: TabColorizer is a consumer product built for developers and QA testers.
Does TabColorizer have a free plan?: Yes — TabColorizer is free to use.
What platforms does TabColorizer run on?: TabColorizer runs on the web and embeddable surfaces.
Is TabColorizer still maintained?: Unverified. TabColorizer 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.
What are alternatives to TabColorizer?: Similar projects tracked by PulseGate include Tab Colors, TabColor, and ColorTabs For Firefox.Tab Colors TabColor ColorTabs For Firefox
Who develops TabColorizer?: TabColorizer is developed by CBIndustries.
When did TabColorizer launch?: TabColorizer first shipped in 2025.

At a glance

Pricing: Free
Platforms: Web
Built for: developers and QA testers
Model: B2C
Solves: Preventing confusion between test, training, and production websites while working in a browser.

Registered as

Firefox Add-ons: tabcolorizer

Developer

CBIndustries

Index record

Indexed: 17 Sep 2026
Lifecycle: Alive
Last seen: 17 Sep 2026

Identity audit (13)

Slug: tabcolorizer-tabs-einfarben-mozilla-org
Lifecycle state recorded: 17 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 17 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: 17 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/tabcolorizer

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