What is Reaction Helper?

Reaction Helper focuses on adding custom reactions to posts in Firefox. It is catalogued under Browser DevTools & extensions on PulseGate.

Who should use Reaction Helper?

Reaction Helper is a consumer product built for firefox users who want custom post reactions.

Does Reaction Helper have a free plan?

Yes — Reaction Helper is free to use.

What platforms does Reaction Helper run on?

Reaction Helper runs on the web, embeddable surfaces, macOS, Windows, and Linux.

Is Reaction Helper still maintained?

Unverified. Reaction Helper 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 develops Reaction Helper?

Reaction Helper is developed by Sarah Young.

When did Reaction Helper launch?

Reaction Helper first shipped in 2026.

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Reaction Helper

Name: Reaction Helper
Author: Sarah Young

mozilla.orgBrowser DevTools & extensions

Reaction Helper is a Firefox browser extension that adds custom reactions to posts. It is intended for individual Firefox users and is distributed through Mozilla Add-ons.

FreeWebEmbeddablemacOSWindowsLinux

Visit mozilla.org

Overview

3 features

Reaction Helper sits in PulseGate's Browser DevTools & extensions category. It focuses on adding custom reactions to posts in Firefox. Reaction Helper is a consumer product aimed at firefox users who want custom post reactions. It is available for free. It runs on the web, embeddable surfaces, macOS, Windows, and Linux.

Sarah Young builds and maintains Reaction Helper, and it first shipped in 2026. Among its 3 catalogued features are custom reactions, post reactions, 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.

Custom reactions
Post reactions
Firefox integration

Built with & integrations

Runs on

BrowserEmbeddablemacOSWindowsLinux

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed10 Sept · 01:10 UTC
Reaction Helper verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Reaction Helper

What is Reaction Helper?: Reaction Helper focuses on adding custom reactions to posts in Firefox. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Reaction Helper?: Reaction Helper is a consumer product built for firefox users who want custom post reactions.
Does Reaction Helper have a free plan?: Yes — Reaction Helper is free to use.
What platforms does Reaction Helper run on?: Reaction Helper runs on the web, embeddable surfaces, macOS, Windows, and Linux.
Is Reaction Helper still maintained?: Unverified. Reaction Helper 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 develops Reaction Helper?: Reaction Helper is developed by Sarah Young.
When did Reaction Helper launch?: Reaction Helper first shipped in 2026.
What languages does Reaction Helper support?: The interface is available in 32 languages, including Czech, German, and Greek.

At a glance

Pricing: Free
Platforms: Web
First seen: 10 Sept 2026
Built for: Firefox users who want custom post reactions
Model: B2C
Solves: Adding custom reactions to posts in Firefox.

Registered as

Firefox Add-ons: reaction-helper

Developer

Sarah Young

Index record

Indexed: 10 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 10 Sept 2026

Identity audit (13)

Slug: reaction-helper-mozilla-org
Lifecycle state recorded: 10 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 10 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
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 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/reaction-helper

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