JS Beautifier

What Is the JS Beautifier?

The JS Beautifier is a small browser tool that adds spacing to JavaScript code you paste into the workspace. Paste code, click Process, and the tool returns the same code with light spacing tidy-ups. It has a single input box and a Process button — no options, no language picker, and no file upload.

How to Use the JS Beautifier

1. Paste your JavaScript code into the workspace textbox.
2. Click Process.
3. Read the result in the output panel. Use Copy or Download to save it, or Clear to start over.

Worked Example

Pasting function add(a,b){return a+b;} and clicking Process gave: function add(a,b){ return a+b; }. The tool added spaces around the braces but did not split the code onto separate lines, add indentation, or add spaces after commas or around the plus sign.

Limitations

• The formatting observed is light spacing only. It does not expand code onto multiple lines, indent blocks, or apply a style guide (no indentation-size, quote-style, or semicolon options).
• There are no options, no file upload, and no drag-and-drop input — only the workspace textbox.
• The tool does not report syntax errors with line and column numbers in the workspace observed. Check the output yourself before using it, especially for code that must parse exactly.
• It is a JavaScript-only workspace. It does not format JSON, HTML, CSS, SQL, or Markdown, despite what older copy on this page claimed.
• Do not treat the output as validated or minifier-safe without testing it in your own editor or runtime.

Frequently Asked Questions

Does the JS Beautifier indent my code?

No, not in the workspace observed. It added spaces around braces but left the code on one line without indentation, as in the worked example.

Can I set indentation size or quote style?

No. The workspace shows no options for indentation, quote style, or any other formatting setting.

Does it check my code for errors?

No line-and-column error reporting was observed. If your input has a syntax error, verify it separately in your editor.

Is the JS Beautifier free to use?

Yes. It is free to use in your browser with no sign-up required.