Page Ruler is a free Chrome extension designed for users who need to measure the dimensions of elements on web pages in pixels. With its intuitive interface, users can quickly activate a ruler overlay by clicking a button in the toolbar. Once activated, a grid appears on the page, allowing precise measurements of width and height for any selected element. The extension supports keyboard shortcuts for fine adjustments, making it a user-friendly tool for both beginners and experienced web developers.

The functionality of Page Ruler is straightforward; simply click the toolbar button to enable the ruler and hover over the desired area. The ruler dynamically adjusts to the mouse movements, displaying real-time measurements. While it offers a simple yet effective measurement tool, it lacks advanced features such as moving the rectangle once drawn. Overall, Page Ruler is an efficient solution for anyone needing quick and accurate measurements while browsing.