Liner. The Real Ruler is a Chrome add-on developed by isdenya. It is a simple and convenient ruler tool designed specifically for web developers. With Liner, web developers can easily create pixel-perfect web applications.

The add-on provides rulers similar to those found in Photoshop, allowing users to accurately measure elements on web pages. The rulers come in different colors and users can adjust the gradation using the shift and ctrl keys. To remove all rulers, users can simply double-click on a ruler. One of the key features of Liner is that it saves the ruler state even after page reloads, ensuring that users don't lose their measurements.

In addition, Liner works on the mobile version of Chrome, making it a versatile tool for web developers on the go. The latest update also introduces the ability to enable or disable rulers with a single click on the extension icon. Users can also set the starting point for a ruler, providing more flexibility in measuring web elements.

Liner. The Real Ruler is a free add-on available on the Chrome Web Store. It offers a simple and effective solution for web developers who need precise measurements for their web applications.