ruler

📏 Slide Ruler 滑尺数值选择器

HTML5 Canvas ruler for authoring tools

An awesome page ruler extension for google chrome

📏 A devtool for measuring pixel dimensions on your React Native screens

A set of utilities and additional features for my creative coding class aiming to help students while introducing the algorithmic thinking.

Modifies Foundry VTT ruler to display when dragging tokens, add token speed highlighting, do pathfinding, calculate elevation

📏Ruler component for react

An online ruler for measuring actual lengths in cm or inch.

Illustrator-style ruler & draggable magenta guide lines for any website — check optical axes, alignment & spacing, and draw rectangle/circle markers to point a colleague, client or AI at a spot. Chrome · Edge · Firefox. Manifest V3, zero dependencies.

Atom plugin that checks if code extends past the ruler, and offers line highlighting and ruler customization options.

Photoshop-style rulers, draggable guides and on-page measurement for any web page. Chrome / Edge extension (MV3).

📏 Ruler app that can measure intuitively

Ruler measurement tool for Leaflet with distance values update on changing path points location

A simple tool to measure area on map

Ruler and protractor app for Firefox OS

一款专为 Windows 系统设计的轻量级屏幕量尺工具，能够精确测量屏幕上任意两点之间的距离、矩形的宽高，以及测量区域到屏幕或窗口的四边缘的精确距离。支持一键截屏。

Simple floating ruler for measuring pixels on screen.

Viewport based (vh & vw) webpage ruler.

Chrome extension: pixel ruler, element inspector (dimensions, spacing, fonts, colors), crosshair guides. MV3.

Free Chrome & Firefox extension for web designers — measure elements, identify fonts, and pick colors with pixel-perfect precision.