Github Diffs is a free Chrome add-on developed by kamranahmed.se. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools program. This handy extension aims to simplify the review process by allowing users to collapse and expand diff files.

When dealing with a large number of files in a pull request, it can be challenging to get an overview or locate specific files. With Github Diffs, users can easily collapse and expand files, eliminating the need to endlessly scroll through a long list of files. The add-on provides buttons for both collapsing all diffs and showing all diffs, offering flexibility and convenience.

Additionally, Github Diffs enhances user experience by making file headers clickable. This feature enables users to toggle the diff for a specific file with a simple click, saving time and effort during the review process.

Overall, Github Diffs is a valuable Chrome add-on for anyone involved in reviewing code on Github. Its ability to collapse and expand diff files, along with clickable file headers, greatly simplifies the review process, making it more efficient and user-friendly.