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showWindowSize

mozilla.orgBrowser DevTools & extensions

PulseGate's liveness check found it on 20 Sep 2026; it is registered on Firefox Add-ons and has been in the index since 20 Sep 2026. How this is checked

showWindowSize is a Firefox browser extension that displays the current browser window dimensions. It is intended for Firefox users and web developers who need to check viewport or window size while browsing and testing websites.

Inferred · not functionally tested

FreeWebEmbeddable
showWindowSize preview
Visit mozilla.org
1alternative
3features
2023since

Overview

3 features

Purpose: Determining the current browser window dimensions without manually measuring or using developer tools.

Inferred · not functionally tested

Audience: Firefox users and web developers

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.

showWindowSize is a Browser DevTools & extensions project. Inferred · not functionally tested: It focuses on determining the current browser window dimensions without manually measuring or using developer tools. Inferred · not functionally tested: It is built as a consumer product for firefox users and web developers. Basis unknown · not verified: showWindowSize is free to use. Basis unknown · not verified: showWindowSize is available on the web and embeddable surfaces.

Behind showWindowSize is deni5n, and it first shipped in 2023. Inferred · not functionally tested: Key capabilities include window size display, browser extension, 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.

Tasks: Inferred · not functionally tested

  • Window size display
  • Browser extension
  • Firefox support

Topics: Inferred · not functionally tested

Tags
firefox-extensionwindow-dimensionsweb-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. Indexed20 Sep · 10:54 UTC
    showWindowSize seen via Firefox Add-ons
    Source: Firefox Add-ons · Open

Frequently asked questions about showWindowSize

What is showWindowSize?
Inferred · not functionally tested: ShowWindowSize focuses on determining the current browser window dimensions without manually measuring or using developer tools. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use showWindowSize?
Inferred · not functionally tested: showWindowSize is a consumer product built for firefox users and web developers.
Does showWindowSize have a free plan?
Basis unknown · not verified: Yes — showWindowSize is free to use.
What platforms does showWindowSize run on?
Basis unknown · not verified: showWindowSize runs on the web and embeddable surfaces.
Is showWindowSize still active?
PulseGate's liveness check found it on 20 Sep 2026.
What are alternatives to showWindowSize?
Similar projects tracked by PulseGate include Display Window Size, Browser Windows Size, and Window Resize.Display Window SizeBrowser Windows SizeWindow Resize
Who develops showWindowSize?
showWindowSize is developed by deni5n.
When did showWindowSize launch?
showWindowSize first shipped in 2023.

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