JavaScript formatting and minification are essential steps in modern web development. Formatting helps improve the readability of code by organizing it with proper indentation and structure, which makes maintenance and debugging easier. On the other hand, minification removes unnecessary characters like whitespaces, line breaks, and comments, reducing the file size and improving page load performance. Minifiers may also shorten variable names, compress expressions, and rearrange code for optimization. However, while minified code is fast, it becomes harder to read and debug. That's why formatting and minification are often used together in development and production stages respectively. This tool provides both functions. The Format button will beautify your code for readability, while the Minify button will obfuscate it into a compact version. This is especially useful when you want to share readable code with collaborators or deploy optimized code into production. Be mindful that heavily obfuscated code may be harder to reverse-engineer but may also introduce debugging difficulties if you don't keep the original source. Always test thoroughly after minification. This tool operates fully on the client side without uploading your code anywhere, ensuring privacy and security.