Pixelgrade is a free browser extension designed for Chrome that focuses on inspecting layout and spacing on live webpages. It allows users to examine interface structures without altering application code, making it an invaluable tool for web developers and designers. The extension features a variety of tools including rulers, a tape measure, and alignment guides, enabling precise measurements and comparisons of elements on the page.

Users can easily select elements to read their live dimensions, drop guides for alignment, and measure distances between points. The extension stores measurements and overlays locally for each site, ensuring a personalized experience without compromising privacy. With keyboard shortcuts for quick access to various functions, Pixelgrade enhances productivity while providing an efficient way to analyze webpage layouts.