Simple JSX Viewer is a free add-on for Chrome designed to facilitate the instant previewing of JSX components without the need for build tools or an internet connection. This open-source tool allows users to load .jsx files easily through file picking, drag-and-drop, or by entering a URL. Its functionality is powered by Sucrase for transpilation and React 18 for rendering, ensuring a modern and efficient user experience.

The viewer operates in a secure, sandboxed iframe, which enhances safety while working with local files. With all necessary libraries bundled locally, users can enjoy a smooth experience without worrying about network requests or CDN dependencies. This makes Simple JSX Viewer an ideal choice for developers looking to quickly test and visualize their JSX code.