Free JavaScript Tools Online - Formatter, Minifier, Beautifier
Js Analyzer
Analyze JavaScript code for size, functions, variables, and complexity. Find optimization opportunities. Browser-based, private analysis.
Js Comment Stripper
Remove all comments from JavaScript while preserving code. Clean up scripts for production. Browser-based, instant processing.
Javascript Formatter
Format and beautify JavaScript code online. Fix indentation, add proper spacing. Supports ES6+, JSX, and TypeScript. Free, private, works offline.
Javascript Minifier
Minify JavaScript to reduce file size. Remove whitespace, comments, shorten names. Optimize for production. Free, private, works offline.
Js To Json
Convert JavaScript object literals to valid JSON. Fix unquoted keys, trailing commas, single quotes. Browser-based, instant conversion.
JavaScript Code Tools
JavaScript is the programming language of the web. Our browser-based tools handle the common tasks of formatting readable code and minifying it for production deployment.
JavaScript Beautification
Minified JavaScript removes whitespace and shortens variable names for size reduction. While essential for production, minified code is nearly impossible to read or debug. Our formatter restores structure and readability. Supports ES6+, TypeScript, JSX, and all modern JavaScript syntax.
JavaScript Minification
Minified JavaScript typically achieves 30-60% size reduction. Removes whitespace, strips comments, and shortens variable names. Combined with gzip compression, minification provides significant bandwidth savings and faster page loads.
Formatting Options
Brace style: Choose between collapse (same line), expand (new line), or end-expand formats to match your project's conventions. Indentation: Configure tabs or spaces with customizable size. Spacing: Control space around operators, after keywords, and inside parentheses.
Debugging Minified Code
When analyzing third-party libraries or debugging production issues, formatted code reveals program logic, control flow, and data structures that are hidden in minified output.