GitHub Compare Helper is a free Chrome add-on developed by Henrik. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. The main purpose of this add-on is to simplify the process of creating GitHub compare URLs.

Manually typing out GitHub compare URLs can be time-consuming, but with GitHub Compare Helper, users can save valuable time by using a simple UI. This add-on works in the same way as the regular GitHub compare URL generation, starting from the first SHA of a commit and ending just before the last SHA of a commit. It includes the top selected commit for branches but excludes the last selected commit, and for pull requests, it works in the opposite way.

Excitingly, GitHub Compare Helper now also works on pull requests, further enhancing its functionality. This add-on is a convenient tool for developers and GitHub users who frequently compare commits and pull requests.

Please note that the developer information and contact details are not provided in this review.