Fixet is a Chrome extension designed to streamline the code submission process for users of Baekjoon Online Judge (BOJ) and SW Expert Academy (SWEA). This free add-on automatically formats pasted code to meet submission requirements, saving users time and effort. It recognizes the relevant websites and applies the necessary transformations based on the programming language used, including Java, JavaScript, and TypeScript.

The extension eliminates the need for repetitive manual adjustments, such as modifying code to include 'public class Main' or 'readFileSync('/dev/stdin')'. With Fixet, users can paste their code directly, and the tool will automatically apply the correct formatting. This functionality enhances the coding experience by reducing the likelihood of submission errors and streamlining the workflow for competitive programmers.