Mesurer

Measure and align elements on any website.

Mesurer is a lightweight on-page measurement tool for designers and design engineers. Click the extension icon to toggle an interactive overlay and inspect layout spacing directly in the browser. What you can do: - Measure width and height of elements instantly - Add horizontal and vertical guides for alignment checks - Measure distance between elements and guides with Option/Alt - Pin distance overlays while comparing multiple areas - Toggle the tool on/off with a single click Why Mesurer: - Fast workflow with a minimal toolbar UI - Built for real-world UI QA and implementation checks - Works directly on the page you are inspecting - No account required Permissions: - activeTab and scripting are used only to run Mesurer on the tab you click. - Mesurer does not require broad always-on access to all tabs.