Ruby Formatter
Format and clean up Ruby code instantly in your browser. Fix indentation, align end blocks, and normalize string quotes — no server required.
How to Use Ruby Formatter
How to Use the Ruby Formatter
Step 1: Paste Your Ruby Code
Paste or type your Ruby code into the input field on the left.
Step 2: Choose Your Options
Indent Size — Select how many spaces to use for each indentation level:
- 2 spaces — The Ruby community standard (recommended)
- 4 spaces — Common in some codebases
Quote Style — Normalize string literal quotes:
- Single ( ' ) — Converts
"string"to'string'where safe (no interpolation or special escapes) - Double ( " ) — Converts
'string'to"string"where safe
Step 3: Copy the Result
The formatted output appears instantly on the right. Click Copy Formatted to copy it to your clipboard.
What Gets Formatted
- Indentation — Re-indents all lines based on block structure (
def,class,module,begin,if,do...end, etc.) - End alignment —
endkeywords are aligned to their corresponding openers - Quote normalization — Converts string quotes to your preferred style when it is safe to do so
Tips
- Use the example buttons to quickly test with real Ruby code snippets
- Strings with interpolation (
#{...}) or single quotes inside are never converted to single-quote style - Strings with double quotes inside are never converted to double-quote style
- The formatter runs entirely in your browser — no code is sent anywhere
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