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Screen Ruler

mozilla.orgBrowser DevTools & extensions

PulseGate's liveness check found it on 15 Sep 2026; it is registered on Firefox Add-ons and has been in the index since 15 Sep 2026. How this is checked

Screen Ruler is a Firefox browser extension that lets users measure elements and distances on their screen. It is intended for users who need quick on-screen measurement while browsing, including designers and developers.

Inferred · not functionally tested

FreeWebEmbeddablemacOSWindowsLinux
Screen Ruler preview
Visit mozilla.org
1alternative
4features
2025since

Overview

4 features

Purpose: Measuring screen elements accurately while browsing in Firefox.

Inferred · not functionally tested

Audience: Firefox users who need on-screen measurement tools

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, macos, windows, linux

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.

Screen Ruler is a Browser DevTools & extensions project. Inferred · not functionally tested: It focuses on measuring screen elements accurately while browsing in Firefox. Inferred · not functionally tested: It is built as a consumer product for firefox users who need on-screen measurement tools. Basis unknown · not verified: It is available for free. Basis unknown · not verified: It runs on the web, embeddable surfaces, macOS, Windows, and Linux.

Lisa Adams builds and maintains Screen Ruler, and it first shipped in 2025. Inferred · not functionally tested: Among its 4 catalogued features are screen measurement, firefox integration, and no data collection. 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

  • Screen measurement
  • Firefox integration
  • No data collection
  • Lightweight extension

Topics: Inferred · not functionally tested

Tags
screen-measurementpixel-rulerfirefox-extension

JSON profile · Text profile · Access guide

Built with & integrations

Runs on
BrowserEmbeddablemacOSWindowsLinux

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. Indexed15 Sep · 20:03 UTC
    Screen Ruler seen via Firefox Add-ons
    Source: Firefox Add-ons · Open

Frequently asked questions about Screen Ruler

What is Screen Ruler?
Inferred · not functionally tested: Screen Ruler focuses on measuring screen elements accurately while browsing in Firefox. It is catalogued under Browser DevTools & extensions on PulseGate.
Who should use Screen Ruler?
Inferred · not functionally tested: Screen Ruler is a consumer product built for firefox users who need on-screen measurement tools.
Is Screen Ruler free?
Basis unknown · not verified: Yes — Screen Ruler is free to use.
What platforms does Screen Ruler run on?
Basis unknown · not verified: Screen Ruler runs on the web, embeddable surfaces, macOS, Windows, and Linux.
Is Screen Ruler still active?
PulseGate's liveness check found it on 15 Sep 2026.
What projects are similar to Screen Ruler?
Similar projects tracked by PulseGate include Page Ruler, Pixel Ruler Pro, and Screen Ruler.Page RulerPixel Ruler ProScreen Ruler
Who develops Screen Ruler?
Screen Ruler is developed by Lisa Adams.
How long has Screen Ruler been around?
Screen Ruler first shipped in 2025.

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