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Pixel accuracy is the quiet hero of great design. A single-pixel mis-alignment can break the rhythm of a grid, make text feel off-centre, or cause an entire component to look “almost right” but not quite. Grid Ruler Lite gives front-end developers, UI/UX designers, QA testers, and anyone who cares about visual polish an instant, in-browser measuring toolkit—no heavyweight design software, no cluttered DevTools panels, and no screenshots shuffled into external apps. With a single click the extension overlays a resizable ruler, snap-to-grid guides, and optional baseline grids on top of any webpage so you can check spacing, verify 8-point grids, and capture evidence of layout bugs in seconds.
What Makes Grid Ruler Lite Stand Out? One-Click Activation, One-Click Dismissal Click the toolbar icon (or invoke the shortcut you set in browser keyboard settings) and the extension injects a lightweight
Why You’ll Want It in Your Toolkit
Save Time: Measuring paddings in DevTools requires drilling into nested boxes and mentally adding border and margin values. Grid Ruler Lite shows distances visually in one drag.
Reduce Bugs: Catch tiny spacing regressions before they reach staging or, worse, production—especially in responsive break-points where QA eyes don’t always land.
Improve Collaboration: Designers can overlay the 8-point grid directly on a deployed build and share a screenshot, giving developers exact pixel feedback without Figma comments.
Stay Focused: No alt-tabbing into Photoshop or opening Sketch files just to measure a button. Everything happens over the live page, exactly as end-users see it.
Educate & Document: Product managers and technical writers can demonstrate layout behaviour with ruler screenshots, making spec documents clearer for all stakeholders.
Target User Groups
User Group
Front-End Developers Need to verify CSS spacing, flexbox gaps, and component alignment across break-points Drag rulers, snap to edges, lock guides, export screenshots for PR reviews
UI/UX Designers Must confirm that dev builds respect 8-point or 10-point design systems Overlay baseline grids, measure paddings, share annotated PNGs
QA Testers Report pixel-perfect bugs with clear evidence Quick measurements and one-key screenshot capture go straight into bug trackers
Content Editors & PMs Check headline wrap, ad slot spacing, and card layouts on CMS-driven pages Non-technical overlay avoids DevTools complexity
Educators & Students Teach design principles, grid theory, and responsive layouts live in the browser Visual, real-time demonstrations without external tools
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