What is Tab Highlighter?

Tab Highlighter focuses on making the active Firefox tab easier to identify among multiple open tabs. It is catalogued under Browser DevTools & extensions on PulseGate.

Who should use Tab Highlighter?

Tab Highlighter is a consumer product built for firefox users who manage multiple open tabs.

Is Tab Highlighter free?

Yes — Tab Highlighter is open source under the Open Source license and free to use.

What platforms does Tab Highlighter run on?

Tab Highlighter runs on the web and embeddable surfaces.

Is Tab Highlighter still maintained?

Unverified. Tab Highlighter 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 Tab Highlighter?

Similar projects tracked by PulseGate include Active Tab Highlighter, Color Active Tab, and Tab Colors.

Who makes Tab Highlighter?

Tab Highlighter is developed by newaccount.

When did Tab Highlighter launch?

Tab Highlighter first shipped in 2024.

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Tab Highlighter

Name: Tab Highlighter
Author: newaccount

mozilla.orgBrowser DevTools & extensions

Tab Highlighter is a lightweight Firefox extension that highlights the active tab with a yellow color. It is designed for users who want clearer visual identification when working with multiple browser tabs.

Open SourceWebEmbeddable

Visit mozilla.org

Overview

4 features

Tab Highlighter is a Browser DevTools & extensions project. It focuses on making the active Firefox tab easier to identify among multiple open tabs. Tab Highlighter is a consumer product aimed at firefox users who manage multiple open tabs. The project is open source (Open Source). It ships for the web and embeddable surfaces.

Behind Tab Highlighter is newaccount, and it first shipped in 2024. Among its 4 catalogued features are active tab highlighting, yellow tab color, and firefox integration. The interface is available in 32 languages, including Czech, German, and Greek.

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

Active tab highlighting
Yellow tab color
Firefox integration
Tab permissions

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

License

Open Source

Verified signals

HTTPSPrivacy Policy Terms of ServiceOpen SourceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed13 Sep · 05:51 UTC
Tab Highlighter verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Tab Highlighter

What is Tab Highlighter?: Tab Highlighter focuses on making the active Firefox tab easier to identify among multiple open tabs. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Tab Highlighter?: Tab Highlighter is a consumer product built for firefox users who manage multiple open tabs.
Is Tab Highlighter free?: Yes — Tab Highlighter is open source under the Open Source license and free to use.
What platforms does Tab Highlighter run on?: Tab Highlighter runs on the web and embeddable surfaces.
Is Tab Highlighter still maintained?: Unverified. Tab Highlighter 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 Tab Highlighter?: Similar projects tracked by PulseGate include Active Tab Highlighter, Color Active Tab, and Tab Colors.Active Tab Highlighter Color Active Tab Tab Colors
Who makes Tab Highlighter?: Tab Highlighter is developed by newaccount.
When did Tab Highlighter launch?: Tab Highlighter first shipped in 2024.

At a glance

Pricing: Open Source
Platforms: Web
License: Open Source
Built for: Firefox users who manage multiple open tabs
Model: B2C
Solves: Making the active Firefox tab easier to identify among multiple open tabs.

Registered as

Firefox Add-ons: tab-highlighter

Developer

newaccount

Index record

Indexed: 13 Sep 2026
Lifecycle: Alive
Last seen: 13 Sep 2026

Identity audit (13)

Slug: tab-highlighter-mozilla-org
Lifecycle state recorded: 13 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 13 Sept 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: 13 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/tab-highlighter

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