JavaScript 格式化工具

Make Minified & 生成d JavaScript Readable

Minified JavaScript is 压缩ed into a single line for production efficiency, but it's unreadable when you need to debug or inspect it. 生成d code from bundlers, transpilers, or code generators often lacks 格式化ting. Trying to understand function a(b){return c(b.d)?e(b.f):null} is painful compared to properly 格式化ted code.

This JavaScript 格式化ter instantly beautifies any JS code, applying consistent indentation and line breaks. Read minified bundles, debug 生成d code, and understand code structure at a glance.

Customize 格式化ting Style

Indentation Options: Choose 2-space (compact, popular in modern projects) or 4-space (traditional, readable for complex nesting).

Brace Style: Select how opening braces are placed relative to statements:

• Collapse: Braces on same line as control structures (compact)
• Expand: Braces on separate lines (readable, common in some style guides)
• End Expand: Opening brace on same line, closing on new line (balanced approach)

These options let you match your team's coding standards or project conventions.

What 格式化ting Does

• Breaks code into readable lines at logical boundaries
• Applies consistent indentation for nested blocks
• Separates statements for clarity
• Preserves logic and functionality while improving readability
• Makes variable names, function calls, and control flow visible

Common Developer Scenarios

Debugging Minified Code: 浏览器 throws an error in minified code? 格式化 it to find the bug. Errors in minified bundles point to line 1, column 50000—not helpful. 格式化 the bundle and locate the actual problem.

Reading 生成d Code: Transpilers (Babel, TypeScript), bundlers (Webpack), and code generators produce valid but un格式化ted output. 格式化 it to understand what was 生成d.

Code Review of Build Artifacts: Need to review what a bundler or build tool produced? 格式化 the output for human inspection.

Learning from Examples: Found code on GitHub or in documentation that's minified? 格式化 it to study 工作原理.

Preparing Code for Analysis: Before analyzing code complexity, performance, or security, 格式化 it for easier inspection.

One-Click Copy

Once 格式化ted to your satisfaction, copy the output with a single click and paste it directly into your editor, documentation, or analysis tools.

Works with Minified & Poorly 格式化ted Code

The 格式化ter is forgiving. It handles:

• Single-line minified code
• Multi-line code with irregular indentation
• Missing whitespace and line breaks
• Nested structures
• All valid JavaScript syntax

Syntax Highlighting

格式化ted code displays with syntax highlighting, making it even easier to read. Keywords, strings, comments, and operators are visually distinguished.

Completely 本地处理

格式化ting happens entirely in your 浏览器 using the js-beautify engine. Your code never leaves your machine, so you can safely 格式化 proprietary code, internal utilities, or any sensitive JavaScript.