Developer ToolsCode FormattersFree Tool
Dart Formatter
Clean up whitespace and blank lines in Dart/Flutter code — a light touch-up, not a Dart-aware reformatter.
How to Use Dart Formatter
- 1Paste your Dart/Flutter code
- 2Click Process
- 3Copy the whitespace-cleaned output
- 4For real formatting, run `dart format` from the Dart SDK
Frequently Asked Questions
No — it only performs generic whitespace cleanup (collapsing 3+ blank lines, trimming trailing spaces). It doesn't reindent based on Dart's brace structure.
The official `dart format` CLI (bundled with the Dart SDK) is the standard formatter and properly understands Dart syntax — this tool's own output points toward it.
No — it doesn't compile or parse Dart at all; it's purely a text cleanup pass.
No — cleanup runs entirely in your browser.
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