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ResponsiveHelper

mozilla.orgBrowser DevTools & extensions

PulseGate's liveness check found it on 16 Sep 2026; it is registered on Firefox Add-ons and has been in the index since 16 Sep 2026. How this is checked

ResponsiveHelper is a Firefox add-on that shows the current screen width and height as the browser window is resized. It is intended for web developers and designers checking responsive layouts during browser-based testing.

Inferred · not functionally tested

FreeWebEmbeddable
ResponsiveHelper preview
Visit mozilla.org

Overview

3 features

Purpose: Checking responsive screen dimensions while resizing a Firefox window.

Inferred · not functionally tested

Audience: web developers and designers

Inferred · not functionally tested

Functions: Unknown

Interfaces: API: unknown · MCP: unknown · CLI: unknown · Self-hosting: unknown

Recorded constraints: pricing: free · license: Proprietary · platforms: WEB · deployment: browser, embeddable

Constraint provenance is unknown; confirm requirements with the publisher.

Record sources: addons.mozilla.org · addons.mozilla.org. These links do not verify the individual claims.

In the Browser DevTools & extensions space, ResponsiveHelper takes a focused approach. Inferred · not functionally tested: It focuses on checking responsive screen dimensions while resizing a Firefox window. Inferred · not functionally tested: ResponsiveHelper is a consumer product aimed at web developers and designers. Basis unknown · not verified: ResponsiveHelper is free to use. Basis unknown · not verified: It ships for the web and embeddable surfaces.

Behind ResponsiveHelper is Erdem Uslu, and it first shipped in 2019. Inferred · not functionally tested: Among its 3 catalogued features are window dimensions, resize tracking, 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.

Tasks: Inferred · not functionally tested

  • Window dimensions
  • Resize tracking
  • Firefox integration

Topics: Inferred · not functionally tested

Tags
firefox-extensionresponsive-designviewport-measurementweb-development

JSON profile · Text profile · Access guide

Built with & integrations

Runs on
BrowserEmbeddable

Trust & compliance

Public signals
HTTPSPrivacy PolicyTerms of ServiceFree tierMulti-languageStore listing found
Legal
Privacy Policy Terms of Service

Indexing history

1

What PulseGate has recorded for this listing

  1. Indexed16 Sep · 03:38 UTC
    ResponsiveHelper seen via Firefox Add-ons
    Source: Firefox Add-ons · Open

Frequently asked questions about ResponsiveHelper

What does ResponsiveHelper do?
Inferred · not functionally tested: ResponsiveHelper focuses on checking responsive screen dimensions while resizing a Firefox window. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use ResponsiveHelper?
Inferred · not functionally tested: ResponsiveHelper is a consumer product built for web developers and designers.
Does ResponsiveHelper have a free plan?
Basis unknown · not verified: Yes — ResponsiveHelper is free to use.
What platforms does ResponsiveHelper run on?
Basis unknown · not verified: ResponsiveHelper runs on the web and embeddable surfaces.
Is ResponsiveHelper still active?
PulseGate's liveness check found it on 16 Sep 2026.
What are alternatives to ResponsiveHelper?
Similar projects tracked by PulseGate include Window Resizer, Responsive Check, and Window Resize.Window ResizerResponsive CheckWindow Resize
Who develops ResponsiveHelper?
ResponsiveHelper is developed by Erdem Uslu.
How long has ResponsiveHelper been around?
ResponsiveHelper first shipped in 2019.

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