Home / Developer Tools / JavaScript Formatter

JavaScript Formatter

Format JS/JSX with the real Prettier engine.

How to use

  1. Paste your JavaScript (or JSX).
  2. Click format.
  3. Copy the Prettier-formatted result.

Frequently asked questions

Is this really Prettier?

Yes - prettier/standalone with the Babel parser runs locally, so output matches your editor.

Is my code uploaded?

No - formatting is fully client-side. Proprietary code stays with you.

Related tools

  • JavaScript Minifier — Minify JS with Terser - the real production minifier.
  • SQL Formatter — Format SQL queries with uppercase keywords and clean indentation.
  • YAML Formatter — Re-indent and normalize YAML documents.
  • YAML Validator — Check YAML syntax - catch indentation errors fast.
  • YAML ↔ JSON — Convert YAML to JSON and JSON to YAML.
  • XML ↔ JSON — Convert XML to JSON and JSON back to XML.

See all developer tools