Mesurer - UI Inspector & Visual Feedback

Measure, inspect, and capture UI in the browser. Share precise visual feedback with your coding agent.

Mesurer is a visual precision tool for building with coding agents. Measure, inspect, annotate, and capture exactly what you see directly in your browser. Use Mesurer to understand interfaces, review visual details, communicate changes, and share precise context with your coding agent. ## Measure - Measure element dimensions - Add horizontal and vertical guides - Show pixel rulers - Hold Option / Alt to inspect spacing, padding, margins, and distances - Keep measurements and guides across reloads ## Inspect - Pick and copy colors - Inspect typography and text styles - Reveal page structure with X-ray mode - Understand layout and visual relationships ## Capture - Capture any part of the interface - Include Mesurer overlays in screenshots - Copy the result instantly and share it with your coding agent ## Built for visual precision Mesurer adds a visual layer directly to the browser, making it easier to inspect interfaces and communicate exactly what you see. Useful for design engineering, frontend development, UI inspection, visual QA, and agent-assisted development. ## Open source and private by default - Free and open source - No account required - Your page content stays in your browser