Format, beautify, and minify JavaScript code anında. Syntax highlighting, proper indentation, and code compression. Tamamen istemci tarafında.
JavaScript Formatter & Minifier is a free online tool that helps developers format, beautify, and compress JavaScript code instantly. All processing happens entirely in your browser using native JavaScript — no data is ever sent to a server, ensuring complete privacy and security. Whether you are cleaning up minified production code, validating syntax, or preparing code for review, this tool handles it all with syntax highlighting and detailed statistics.
Yes, absolutely. All processing happens entirely in your browser using JavaScript. Your code is never sent to any server, ensuring complete privacy and security.
Format (Beautify) adds proper indentation and line breaks to make JavaScript readable. Minify removes all unnecessary whitespace and comments to produce the most compact code possible, ideal for production use.
The Validate mode uses the JavaScript Function constructor to check syntax. It catches syntax errors but may not catch runtime errors or logical issues. It is best used as a quick syntax check before deployment.
You can choose between 2 spaces, 4 spaces, or tab characters for indentation. The tool remembers your preference and applies it consistently throughout the formatted output.
Yes, simply click the Download button and the result will be saved as a .js file. You can also use the Copy button to copy the result to your clipboard.
Yes, the syntax highlighter recognizes modern JavaScript features including ES6+ keywords (const, let, async, await), template literals, arrow functions, and regular expressions.
There is no artificial size limit. However, extremely large files (megabytes) may cause browser performance issues. For most use cases, the tool handles files of any practical size instantly.
The Format mode adds proper line breaks and indentation which improves readability. While it does not insert semicolons, the structured formatting makes ASI (Automatic Semicolon Insertion) issues easier to spot.