JavaScript Minifier & Beautifier
Optimize and format your JavaScript code for production or development
Input JavaScript
Features
Minification:
- Removes comments and unnecessary whitespace
- Optimizes code for smaller file sizes
- Preserves string literals and regex patterns
- Perfect for production deployment
- Faster page load times
Beautification:
- Proper indentation and formatting
- Readable structure for development
- Consistent code style
- Easy to debug and maintain
- Preserves comments and logic flow
About the JavaScript Minifier
The JavaScript minifier strips comments, line breaks and extra whitespace from your code to reduce its size for faster page loads. It is handy for small scripts, inline snippets, bookmarklets and legacy pages that do not go through a build pipeline. The same tool can beautify minified JavaScript so you can read third-party code or debug a production bundle. Everything runs locally in your browser.
How to use the JavaScript Minifier
- Paste the JavaScript you want to process.
- Click Minify to compress or Beautify to reformat.
- Review the size statistics and the output.
- Copy the result or download it as a .js file.
Frequently asked questions
Does this rename variables or change logic?
No. It performs safe whitespace and comment removal only, so behaviour is unchanged. For aggressive mangling use a build tool such as Terser.
Can minification break code that relies on ASI?
Code that depends on automatic semicolon insertion can be fragile when line breaks are removed. Add explicit semicolons before minifying to be safe.
Is ES module and modern syntax supported?
Yes. Because the tool works on text rather than parsing a full AST, it handles any syntax, including ES2020+ features.