Linetef is a free Chrome add-on developed by Nicolás Tinte. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. Linetef allows users to quickly add guide lines to check alignment, measure elements, and determine distances between them.

With Linetef, users can easily create guides on their screen to measure elements, both horizontally and vertically. The add-on provides the option to view the distances between elements in pixels or percentage mode. Additionally, users can see the viewport size, displaying the width and height of the screen.

One of the key features of Linetef is the ability to customize the color of the created guides. Users can choose their preferred color to ensure visibility and clarity. The add-on also offers the flexibility to position the rulers either at the top or bottom, as well as the left or right side of the screen.

Linetef provides various options to show or hide different elements of the extension. Users can choose to show or hide the entire extension, distances between elements (useful for checking alignment), and the viewport size. These options allow for a customizable and clutter-free working environment.

In addition to its main features, Linetef offers a range of convenient shortcuts for quick access. Users can easily show or hide the extension, distances, and viewport using keyboard shortcuts. They can also delete specific guides, delete all guides, reset configurations, and change the position of the horizontal and vertical rulers.

Linetef is a valuable tool for web developers and designers who frequently need to check alignment, measure elements, and determine distances. Its user-friendly interface and customizable options make it a reliable choice for Chrome users.