Who should use Change User-Agent?

Change User-Agent is a consumer product built for firefox users and web developers testing browser-specific behavior.

Does Change User-Agent have a free plan?

Yes — Change User-Agent is free to use.

What platforms does Change User-Agent run on?

Change User-Agent runs on the web, embeddable surfaces, and Android.

Is Change User-Agent still maintained?

Unverified. Change User-Agent 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 projects are similar to Change User-Agent?

Similar projects tracked by PulseGate include User-Agent Changer, User Agent, and User-Agent Modifier.

Who makes Change User-Agent?

Change User-Agent is developed by amria.

How long has Change User-Agent been around?

Change User-Agent first shipped in 2024.

Back to the index

Change User-Agent

Name: Change User-Agent
Author: amria

mozilla.orgBrowser DevTools & extensions

Change User-Agent is a Firefox extension that permanently replaces the browser user-agent with one custom string. It is available for Firefox on desktop and Android and is intended for web development, compatibility testing, and privacy-related browser configuration.

FreeWebEmbeddableAndroid

Visit mozilla.org

2alternatives

5features

2024since

Overview

5 features

In the Browser DevTools & extensions space, Change User-Agent takes a focused approach. It focuses on changing the browser user-agent string without manually modifying browser settings or developer tools. It is built as a consumer product for firefox users and web developers testing browser-specific behavior. Change User-Agent costs nothing to use. It runs on the web, embeddable surfaces, and Android.

amria builds and maintains Change User-Agent, and it first shipped in 2024. Among its 5 catalogued features are custom user-agent, permanent override, and firefox support. The interface is available in 32 languages, including Czech, German, and Greek.

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

Custom user-agent
Permanent override
Firefox support
Android support
Website permissions

Built with & integrations

Runs on

BrowserEmbeddableAndroid

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed12 Sep · 03:05 UTC
Change User-Agent verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Change User-Agent

What is Change User-Agent?: Change User-Agent focuses on changing the browser user-agent string without manually modifying browser settings or developer tools. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Change User-Agent?: Change User-Agent is a consumer product built for firefox users and web developers testing browser-specific behavior.
Does Change User-Agent have a free plan?: Yes — Change User-Agent is free to use.
What platforms does Change User-Agent run on?: Change User-Agent runs on the web, embeddable surfaces, and Android.
Is Change User-Agent still maintained?: Unverified. Change User-Agent 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 projects are similar to Change User-Agent?: Similar projects tracked by PulseGate include User-Agent Changer, User Agent, and User-Agent Modifier.User-Agent Changer User Agent User-Agent Modifier
Who makes Change User-Agent?: Change User-Agent is developed by amria.
How long has Change User-Agent been around?: Change User-Agent first shipped in 2024.

At a glance

Pricing: Free
Platforms: Web
Built for: Firefox users and web developers testing browser-specific behavior
Model: B2C
Solves: Changing the browser user-agent string without manually modifying browser settings or developer tools.

Registered as

Firefox Add-ons: change-user-agent

Developer

amria

Index record

Indexed: 12 Sep 2026
Lifecycle: Alive
Last seen: 12 Sep 2026

Identity audit (13)

Slug: change-user-agent-mozilla-org
Lifecycle state recorded: 12 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 12 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: 12 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/change-user-agent

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