BOJ Performance is a Chrome add-on designed to enhance the user experience on the Baekjoon Online Judge (BOJ) platform by providing visual feedback on code performance metrics. This tool displays execution time and memory usage in a clear bar graph format, allowing users to see their performance relative to other submissions. The intuitive interface makes it easy to grasp the efficiency of one's code at a glance, with immediate visual representations of where it stands among recent submissions.

One of the standout features is the ability to see percentile rankings, such as being in the top 15% based on the latest 200 submissions, providing a concrete measure of performance. Additionally, the extension supports dark mode to match browser settings, enhancing usability in various environments. With no configuration required post-installation, users can start analyzing their code effortlessly, and language filters allow for quick updates to the performance statistics displayed.