ChiSu (尺素) is a sophisticated tool designed specifically for web developers and UI designers. It integrates high-precision features such as a Color Picker, Pixel Ruler, and Box Model inspection, all of which enhance web layout and CSS color debugging. The tool employs lossless Shadow DOM technology, ensuring stable operation on complex web pages without style conflicts, making it an effective companion for front-end development tasks.

Key functionalities include precise pixel measurement with a movable ruler, real-time color sampling with an optimized magnifier, and detailed inspection of element properties. Additionally, it allows users to extract color schemes, font families, and images from current pages seamlessly. The mobile adaptation of ChiSu also enhances usability, featuring touch-optimized controls and responsive layouts that improve the overall experience for developers working on mobile H5 debugging.