Sketch Preview is a free browser extension developed by jvanbruegge that allows users to view Sketch files directly in GitHub. This extension is specifically designed for users who frequently work with Sketch files and want a convenient way to preview them without having to download and open them in the Sketch app.

With Sketch Preview, users can easily view Sketch files in their browser, making it easier to quickly review designs and provide feedback. The extension integrates seamlessly with GitHub, allowing users to view Sketch files directly on pull requests. This is particularly useful for teams collaborating on design projects, as it enables them to easily compare and review design changes.

One of the standout features of Sketch Preview is its visual diff functionality. When viewing open pull requests, the extension displays a visual diff of the Sketch files, highlighting the changes that have been made. This makes it even easier to review and compare design iterations, saving time and effort.

Overall, Sketch Preview is a valuable browser extension for designers and developers who frequently work with Sketch files on GitHub. Its seamless integration, convenient previewing capabilities, and visual diff functionality make it a must-have tool for teams collaborating on design projects.