PR to Master Warning for GitHub is a Chrome extension designed to enhance the GitHub user experience by prompting a confirmation dialog when attempting to create a pull request (PR) targeting the master branch. This tool is particularly useful for teams that have established git workflows restricting PRs to the master branch, helping to prevent accidental merges into the main codebase.

The extension allows users to customize its functionality by whitelisting specific organizations and usernames within the options menu. This feature ensures that the confirmation dialog only appears in designated scenarios, streamlining the workflow while maintaining necessary safeguards. The icon used in the extension is derived from openclipart.org assets, ensuring a visually appealing interface.