JavaScript tools

Free online JavaScript tools to format, validate, convert and debug JavaScript data in your browser. No sign‑up, fast and privacy‑friendly.

• Babel Formatter – Format JS/JSX using Prettier (Babel).
• JavaScript Validator – Validate JavaScript syntax in-browser.
• Minify JavaScript – Minify and compress JavaScript (via Terser) in your browser; reduce size and improve load times.
• Javascript Beautifier – Format JavaScript with consistent indentation and spacing; readable modern JS.