Description
Measure anything. Inspect everything. Test every breakpoint. All without opening DevTools.
DevRuler Pro gives designers, developers, and QA engineers a floating toolbar that lives right on your page — pixel-perfect rulers, element inspection, responsive previews, and overflow detection in one lightweight extension.
Reviews
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Permissions (3)
Permissions
activeTabℹ Can access the current tab when you click the extension scriptingℹ Can inject scripts into web pages storageℹ Can store data locally in your browser
Details
| Version | 1.0.0 |
| Updated | Feb 17, 2026 |
| Size | 34.63KiB |
| First Seen | Mar 24, 2026 |
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