Pull Request Blocker is a free Chrome extension developed by parizhskiy. It falls under the category of Browsers and is specifically categorized as an Add-ons & Tools subcategory.

This extension serves a specific purpose - it prevents users from creating pull requests to the master branch on Bitbucket. By installing Pull Request Blocker, users can enforce a stricter workflow and ensure that all changes go through proper channels before being merged into the master branch. This can be particularly useful for teams or organizations that follow a more controlled release process.

With Pull Request Blocker, users can easily set up rules and restrictions to prevent accidental or unauthorized pull requests to the master branch. This adds an extra layer of security and helps maintain the integrity of the codebase.

Overall, Pull Request Blocker is a valuable tool for those who want to enforce stricter control over their Bitbucket repositories and ensure that all changes go through the appropriate review process before being merged into the master branch.