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JavaScript Formatter

Pretty-print JavaScript locally in your browser with 2- or 4-space indent.

Tool workspace

Pretty-print JavaScript in your browser. Code is not executed or evaluated. Nothing you paste is uploaded. Best-effort formatting — not Prettier or a full parser.

How it works

Paste JavaScript, choose an indent size (2 or 4 spaces), then Format.

Formatting runs entirely in your browser with a best-effort brace-aware prettifier. Code is never executed, evaluated, or uploaded.

Empty input clears the result—no error. This is not Prettier, eslint --fix, or a full JavaScript parser.

Examples

  • function f(){return 1;} → indented blocks
  • Nested if/function blocks → readable structure
  • Indent size 4 → wider indentation

Privacy

Privacy: this tool processes JavaScript locally in your browser. We do not log or store what you paste. Login is not required.

FAQ

Is my JavaScript uploaded?

No. Formatting runs entirely in your browser. We do not log or store what you paste.

Does this execute or lint my code?

No. It best-effort pretty-prints source text. It does not run JavaScript, evaluate expressions, or claim Prettier/eslint equivalence.

Do I need an account?

No. All published tools work for guests without login.

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