Will beautifying restore variable names in minified code?

No. Beautifying expands formatting only; minifiers remove names permanently. Use source maps or original source for true debugging.

Can syntax errors be auto-fixed?

The beautifier formats valid code only. Syntax errors require manual inspection and fixes.

No. Formatting changes whitespace and indentation only. Logical flow is preserved.

Comments are preserved and reformatted with surrounding code.

JSX syntax is supported and formatted alongside JavaScript logic.

The beautifier handles JavaScript; TypeScript annotations are preserved but may need a dedicated TypeScript formatter for optimal formatting.

Web Studio Tools

Pretty-print JavaScript code with consistent spacing.

JavaScript Beautifier formats minified or poorly formatted code with consistent indentation and readability.
Expand bundles and obfuscated scripts for debugging, and prepare clean code for reviews and documentation.

Paste JavaScript into the editor—minified, bundled, or unstructured code.
The beautifier expands and reorganizes code with proper spacing and indentation.
Adjust indentation level if needed and review the formatted output.
Copy or download the beautified JavaScript for debugging, documentation, or analysis.

Expand minified vendor JavaScript to understand library behavior during debugging.
Format bundled source maps output to inspect transpiled code.
Clean manually-written or auto-generated scripts before code review.
Beautify obfuscated scripts to inspect structure (not to recover original logic).

Missing semicolons: let x = 5 is valid but inconsistent. Always add ; for clarity.
Var instead of const/let: var is function-scoped and hoisted; prefer const for immutables, let for mutables.
Object key unquoted when required: { "my-key": value } needs quotes; {my_key: value} is valid without quotes.
Arrow function ambiguity: arrow => object returns function, not object. Use (arrow => ({ object })) to return objects.
Async/await without try-catch: Unhandled promise rejections silently fail. Always wrap in try-catch blocks.
Template string interpolation: "Hello " + name uses string concat (old style); use backticks: `Hello ${name}`.
Destructuring errors: const {x} = obj extracts x, but const {x: newName} = obj renames it to newName.

Variable declaration: var, let, const. Example: const name = "value";.
Function declaration: function name(params) { body }. Example: function greet(name) { console.log("Hello " + name); }.
Arrow function: (params) => { body }. Example: const add = (a, b) => a + b;.
Object: { key: value }. Example: { name: "John", age: 30 }.
Array: [ item1, item2 ]. Example: [1, 2, 3].
Control flow: if/else, for, while, switch. Example: if (condition) { action }.
Comment: // single line or /* multi-line */.
String: "double", 'single', or `backtick template`. Example: `Hello ${name}`.
Import/Export: import/export statements for modules. Example: import { func } from "./module.js";.

Specifications & Standards

Will beautifying restore variable names in minified code?
No. Beautifying expands formatting only; minifiers remove names permanently. Use source maps or original source for true debugging.
Can syntax errors be auto-fixed?
The beautifier formats valid code only. Syntax errors require manual inspection and fixes.
Does beautifying change code behavior?
No. Formatting changes whitespace and indentation only. Logical flow is preserved.
How are comments handled?
Comments are preserved and reformatted with surrounding code.
Can JSX be beautified?
JSX syntax is supported and formatted alongside JavaScript logic.
What about TypeScript?
The beautifier handles JavaScript; TypeScript annotations are preserved but may need a dedicated TypeScript formatter for optimal formatting.

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