Swift Formatter
Formats Swift source code with proper indentation, spacing, and bracing style for readable iOS and macOS development.
How to Use the Swift Formatter
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Frequently Asked Questions
How do closures format?
Trailing closures and completion handlers indent one level with capture lists preserved. Guard statements and optional chains space consistently throughout.
Does it touch optionals?
Never semantically — ? and ! placement normalizes cosmetically only. Force-unwraps stay force-unwraps; the formatter judges nothing.
UIKit or SwiftUI?
Both — view builders, modifiers chains, and UIKit boilerplate share the same indentation engine. Long modifier chains wrap one per line.
Does Swift code leave the browser?
No — formatting runs locally in your browser. Code never leaves your device.
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Last updated October 2026