PR Size Guard is a Chrome add-on designed for GitHub users, specifically targeting code reviewers and developers. This tool provides instant visibility into the size of pull requests by displaying color-coded badges that categorize PRs as Small, Medium, Large, or Critical based on the number of files changed and lines added or deleted. The badge appears next to the PR title for quick reference, eliminating the need for additional clicks to assess the PR size.

The extension allows for customizable thresholds, enabling users to adjust the maximum number of files and lines for each category according to their team's standards. It operates seamlessly within GitHub, supports dark mode, and requires no configuration to start. With no data collection or external tracking, PR Size Guard prioritizes user privacy, making it a lightweight solution that enhances the code review process.