The Ruler

A simple and complete ruler to measure viewport distances with pinned guides.

The Ruler – Advanced Pixel Measuring Tool The Ruler is a precise on-page measuring extension that lets you calculate pixel distances directly inside your browser. Built for developers, designers, and QA engineers who need accurate spacing, alignment, and layout validation. Features: • Measure distances using multiple points • Drag and rearrange anchors freely • Show / hide measurements instantly • Customize measurement colors • Switch between different line styles • Save presets for repeated workflows • Share presets with your team • Lightweight and distraction-free The Ruler works on any webpage and helps you inspect layouts faster without leaving the browser. Measure smarter. Work faster.