Wide GitHub от fabiocchetti

Wide GitHub expands GitHub's layout to the full width of your browser window, enhancing readability, reducing vertical scrolling, and improving accessibility.

Code diffs and pull request reviews stop being squeezed into a narrow column, file trees and issue threads get room to breathe, and large displays are finally put to use.

It works on GitHub, private Gists, GitHub Pages and GitHub Enterprise, and you can add your own self-hosted domain from the toolbar popup. The wide layout can be switched on or off with a single click, and your preferences follow you across devices through your browser's built-in sync.

Wide GitHub collects no data: no analytics, no tracking, no external servers. By default it runs only on GitHub, Gist and GitHub Pages. Access to any other site is optional, and requested only when you add a custom domain yourself.

Free and open source, under the MIT license.