Minify or beautify JavaScript code to reduce file size
Processed JavaScript will appear here...
Minify or beautify CSS code to reduce file size or improve readability
Minify or beautify HTML code to reduce file size
Format, validate, and minify JSON data with syntax highlighting
Format and beautify SQL queries
JavaScript Minifier is a free online tool that reduces the size of JavaScript code by removing unnecessary whitespace, comments, and line breaks. It also includes a beautify mode that formats compressed JavaScript with proper indentation for readability. Minifying JavaScript is a critical optimization for web performance — smaller files download faster, reducing page load times and improving Core Web Vitals scores. All processing happens entirely in your browser — your code is never uploaded to any server.