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Ruby Code Formatter
If this tool helped you, you can buy us a coffee ☕
Free online Ruby code formatter and beautifier. Automatically fix indentation, organize syntax, and instantly improve your code readability.

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When writing Ruby scripts daily, messy indentation and inconsistent spacing can make project maintenance extremely difficult. This tool automatically formats and beautifies your Ruby source code, unifying indentation styles, aligning line breaks, and formatting operators. It outputs clean, standardized Ruby code, significantly improving readability and team collaboration efficiency.
Input Example (Messy Code):
def hello(name)
puts "Hello, #{name}";end
Output Example (Formatted):
def hello(name)
puts "Hello, #{name}"
end
Please do not input excessively large code files (recommended not to exceed 5MB per request) to avoid processing timeouts. The tool parses code entirely locally in your browser or on a secure backend and does not store any of your source files, so you can use it with peace of mind. If your code contains unconventional encoding or special Unicode spaces, it may affect the alignment. It is recommended to remove invisible characters before formatting.
For Ruby projects, it is recommended to uniformly use 2-space indentation (following Ruby community conventions) and keep a blank line between methods. After using this tool, you can combine it with static analysis tools like RuboCop to further check for style issues. A typical best practice is to unify the style with a formatting tool before committing code, and then run tests. This effectively reduces formatting disputes during code reviews. For beginners, observing the differences before and after formatting is also a shortcut to learning Ruby coding style conventions.