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Features

Everything you need
to inspect like a pro.

Inspect spacing, typography, colors, layouts, and CSS cascade directly on the page. Built for developers, freelancers, and design QA teams.

Guide Lines That Sync Across Tabs

Drop horizontal and vertical guides at any pixel position. Guides stay synced across tabs, persist after browser restart, and help you recreate layouts with precision.
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Box Model Inspector

Hover any element to instantly visualize margins, padding, borders, and content areas. See spacing values without digging through DevTools.
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Typography & Color Inspection

Inspect font family, size, weight, line-height, and colors directly on the page. Perfect for design QA and implementation reviews.
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CSS Cascade Debugger

See every matching CSS rule, specificity score, overridden property, and winning selector. Finally understand why your CSS is or isn't applying.
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Built by Developers, for Developers Sightline Team