GitHub PR File Hider Button is a free Chrome add-on designed to enhance the efficiency of code reviews on GitHub. By adding a simple button, this tool allows users to quickly hide individual files within pull request reviews, helping to reduce clutter and improve focus on the relevant code. The functionality includes the ability to auto-hide empty folders when all their contents are hidden, ensuring a cleaner interface during the review process.

Additionally, users can effortlessly reveal all hidden files with a single click, making it easy to toggle visibility as needed. The tool also allows for sharing links that retain the user's hidden state, facilitating collaboration among team members. With minimal changes to the Document Object Model (DOM), the add-on remains fast and reliable, supporting both pull request and commit screens.