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JavaScript Minifier Online
Safely compress JavaScript functions and scripts by stripping unnecessary comments, whitespace, and line breaks.
Processed 100% locally in browser memory. Code is never sent to external servers.
INPUT (JAVASCRIPT)
OUTPUT
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How to Use JavaScript Minifier
1
Paste JavaScript
Enter your JavaScript code.
2
Minify
Click Minify to compress the script.
3
Copy
Copy the compact minified code.
About JavaScript Minifier
Tokenizes JavaScript lexical streams, stripping comments and dead whitespace while strictly preserving string literals, regular expressions, and ASI semicolon safety.
Supported Formats
JavaScriptJS
Operational Limits
- •Pure syntactic minification; does not mangle variable names to avoid runtime scope issues
Key Features
- Strips single-line (//) and block (/* */) comments
- Collapses whitespace safely
- Shows byte reduction metrics
- 100% client-side privacy
Frequently Asked Questions
No! The code is parsed purely syntactically in your browser's local sandbox memory and is never executed on any server.
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