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More Developer Tools

SQL FormatterFormat and beautify SQL queries with indentation, keyword casing, and readable clause breaks.
HTML FormatterFormat and beautify HTML markup with indentation, readable tag breaks, and optional minification.
CSS FormatterFormat and beautify CSS stylesheets with indentation, readable rules, and optional minification.
JSON FormatterFormat, minify, and validate JSON with precise error locations.
Diff CheckerCompare two texts and highlight added, removed, and changed lines or words instantly in your browser.
JSON BeautifierBeautify and explore JSON with adjustable indentation, key sorting, a collapsible tree view, and structure stats.

JavaScript Beautifier

Format and beautify JavaScript code with indentation, readable blocks, and optional minification.

Input JavaScript

Output

const fetchUser = async (id) => {
  const res = await fetch(`/api/users/${id}`);
  if (!res.ok) throw new Error("Failed");
  return res.json();
};
const users = [
  {
    id: 1,
    name: "Ada"
  },
  {
    id: 2,
    name: "Bob"
  }
];

16Lines

3Blocks

237Characters

Formats common JavaScript syntax including functions, objects, arrays, template literals, and comments. Processing runs entirely in your browser.