JavaScript Minifier
Minify JavaScript source code with production-grade compression and mangling.
Dark Theme
Input Code
Paste the JavaScript source code you want to minify.
Minified Output
The minified JavaScript result appears here.
Input Size
0 B
Output Size
0 B
Bytes Saved
0 B
Reduction 0%
How to use
- Paste JavaScript source code into the left editor.
- Click 'Minify JS' to run production-grade compression.
- Review the output and size reduction on the right.
- Copy the output when you need to reuse the minified script.
- Use History to restore recently processed inputs.
Related Knowledge
JavaScript minification removes unnecessary whitespace, comments and compressible expressions while shortening symbols when safe, reducing transfer size for script delivery.
Why use a dedicated minifier page?
Formatting and minification serve different goals. A dedicated minifier page focuses on output size, copy-ready results and production-oriented validation.
Can minified code still be debugged?
Yes, but readability drops sharply. Keep unminified sources for development and use minified output or sourcemaps for release builds.
Key Features
- Production-grade minification powered by Terser
- Automatic input and output size statistics
- Local history restore
- Dark editor theme support
Common Applications
- Minify frontend scripts before release
- Reduce payload size for embedded widgets
- Quickly validate whether code can be minified
- Compare compression gains across snippets