DEVELOPER UTILITY

JS
MINIFIER

Minify JavaScript online by removing unnecessary whitespace while preserving your code's behavior.

100% CLIENT-SIDE. SAFE LEXICAL MINIFICATION.

Remove Comments (Preserves /*! / @license)

Enter JavaScript and click "Minify JS".

All minification runs locally in your browser with zero code execution and zero server calls.

HOW IT WORKS

PASTE JAVASCRIPT

Paste your formatted JavaScript script into the editor workspace.

MINIFY & REDUCE

Click Minify JS to safely strip unnecessary whitespace and comments.

COPY & EXPORT

Instantly copy your compressed JavaScript or download it as a minified.js file.

FEATURE HIGHLIGHTS

ZERO CODE EXECUTION

Pure lexical tokenization ensures your scripts are minified securely without ever being executed or evaluated.

100% PRIVATE & LOCAL

Zero server transmission and zero logging. Your code payloads remain strictly inside your browser memory.

OPTIONAL COMMENT REMOVAL

Control whether comments are removed during minification.

EXPORT MINIFIED SCRIPT

Copy the compact output or download a JavaScript file.

CLIENT-SIDE PRIVACY

ManyTinyTools operates browser-first. Your JavaScript code remains strictly inside local browser memory and is never uploaded, recorded, or sent to analytics.

LOCAL
INPUT

BROWSER
MEMORY

MINIFIED
EXPORT

RELATED DEVELOPER TOOLS

JS Formatter CSS Minifier CSS Formatter HTML Minifier HTML Formatter JSON Minifier JSON Formatter XML Formatter

FREQUENTLY ASKED QUESTIONS

How do I minify JavaScript?

Is my code executed or evaluated?

Are modern ES6+ features supported?

JSMINIFIER