Text UtilitiesText FormattersFree Tool
JavaScript Formatter
Apply basic bracket-based indentation to JavaScript code — not a real parser like Prettier, so complex code may not indent perfectly.
How to Use JavaScript Formatter
- 1Paste your JavaScript code
- 2Click Convert
- 3Copy the re-indented output — verify against Prettier for anything beyond simple code
Frequently Asked Questions
It counts opening ({, [, () and closing (}, ], )) brackets per line and adjusts indentation depth accordingly — a simple heuristic, not a real JavaScript parser.
Not reliably — since it counts bracket characters anywhere on a line (including inside strings, comments, or regex literals), unusual code containing bracket-like characters in those contexts can throw off the indentation.
Prettier (prettier.io) is the standard — it has a real parser and handles every JS syntax edge case correctly, unlike this simple heuristic.
No — the indentation pass runs entirely in your browser.
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