Grid Overlay Tool is a Chrome extension designed for web developers, UI/UX designers, and QA testers to add customizable grid overlays to any webpage. This tool facilitates alignment checking, ensuring pixel-perfect layouts and validating responsive design. Featuring three grid types—spacing, column, and full grid—it offers advanced customization options for spacing, colors, and opacity, making it suitable for various design scenarios. Additionally, it saves user settings across sessions, enhancing workflow efficiency.

The extension operates without interfering with page interactions and maintains high performance across different websites, including localhost. Privacy is prioritized with zero data collection and minimal permissions required. Its user-friendly interface allows for quick toggling of overlays, making it an essential tool for validating designs and ensuring compliance with established design systems.