ToolForgeby ForgeSparse

Javascript Tools

Format, minify and validate JavaScript.

JavaScript input

Output

function greet(name) {
  if (!name) {
    return "Hello, stranger!"
  }
  return "Hello, " + name + "!"
}

Format, minify, and validate JavaScript online

JavaScript Tools cleans up messy JS into readable code, shrinks it for production, and checks for syntax errors — all directly in your browser.

Why use this tool

Readable formatting

Turns compressed or inconsistently-indented JavaScript into clean, standard-style code.

Quick syntax check

Catches syntax errors (missing brackets, invalid tokens) before you ship code.

Lightweight minify

Strips comments and extra whitespace to reduce script size.

No upload required

Your code is processed entirely in your browser.

How it works

  1. 1Paste your JavaScript into the input box.
  2. 2Choose Format, Minify, or Validate.
  3. 3Copy the result or download it as a .js file.

Frequently asked questions

Good to know

  • Validate checks for syntax errors only — it doesn't run your code or check logic.
  • Minify is a lightweight pass; for production bundles, a real bundler (esbuild/terser) will do better.
  • Runs fully in your browser — nothing is uploaded.