Product Feature
Visual Comparison for Design QA
Compare your design specs against live implementations. See exact visual differences and validate implementation accuracy in real time.
How Visual Comparison works
Visual Comparison renders your design spec as a semi-transparent layer directly on top of the live webpage in your browser. You can adjust opacity, toggle the comparison on and off, and pan across the page to spot differences between design and implementation. When you find a discrepancy, OverlayQA's capture and AI tools turn it into a structured, exportable issue in seconds.
When you spot a difference, click on the element to capture its exact CSS properties, DOM selector, and a screenshot of the discrepancy. OverlayQA's AI analyzes the visual differences automatically, so instead of saying "the spacing looks wrong," you can report that a component has 16px padding when the spec calls for 24px. This precision eliminates ambiguity and lets developers fix issues in a single pass.
Visual Comparison works across any staging environment accessible in your browser, including localhost, preview deployments, and production URLs. Browse your Figma files directly from the extension, select the frame you want to compare, and start reviewing without exporting PNGs or taking screenshots.
Why visual comparison matters in website design and development
- Eliminates tab-switching — Compare design specs and live implementations in the same view instead of toggling between tools.
- Pixel-precise reporting — Click any element to capture exact CSS values and DOM selectors, giving development teams actionable context instead of vague feedback.
- Catches what manual review misses — Subtle spacing, color, and typography differences that human eyes miss become visible when design and implementation are compared side by side.
- Protects the final product — Visual comparison catches drift before it reaches production, ensuring the user experience matches the original design intent across every release.
- Share findings with anyone — Generate a public link to share captured issues with stakeholders, clients, or teammates who don't use OverlayQA. No login required.