Web Ruler is a free Chrome add-on developed by donovantxy. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools subcategory. This handy tool allows web developers to easily measure the pixels of any web element.

With Web Ruler, you can accurately measure the length, height, and distance from the origin point of any desired element within your web pages. The tool offers a simple and intuitive interface, making it easy to use for both beginners and experienced developers.

To measure an element, simply click the left mouse button to set the origin point, then move the mouse to resize the area you want to measure. Click the left mouse button again or press the Enter key to fix the dimensions of the selected area. You can also move the selected area using the keyboard arrows or by dragging it. Additionally, you can resize the area without changing the origin point by clicking the Enter key. Furthermore, you have the option to switch between a light and dark mode by pressing the Space key.

Web Ruler is a valuable tool for web developers who need to accurately measure elements on their web pages. Its user-friendly interface and convenient features make it a must-have add-on for anyone working in web development.