Code Minifier
Minify JavaScript, CSS, HTML and JSON code to reduce file size.
Input
Output
About Code Minifier
Code minification removes unnecessary characters from code to reduce file size. Perfect for production deployments.
Common Use Cases:
- Reducing file sizes for production
- Optimizing website performance
- Preparing code for deployment
- Bandwidth optimization
Frequently Asked Questions
Minification typically reduces CSS and JavaScript file sizes by 20–50%, and when combined with gzip or Brotli compression on the web server, the transferred bytes can be reduced by 60–80% compared to unminified, uncompressed files. For a site with 500 KB of CSS and JS, this can save 300–400 KB per page load — a meaningful improvement on mobile connections.
The auto-detection logic checks the first non-whitespace character and structure: if it starts with { or [ it tries JSON parsing; if it starts with < it treats it as HTML/XML; if it contains { with : or ; it treats it as CSS; otherwise it treats it as JavaScript. The output badge shows you which type was detected so you can verify it matched your intent.
Minification removes unnecessary whitespace and comments to reduce file size while keeping the code functionally identical and still readable if formatted. Obfuscation goes further — it renames variables to meaningless single letters, restructures logic, and inserts confusing patterns to make reverse-engineering harder. Obfuscation provides some IP protection but adds complexity and is not needed for typical web performance optimization.