JSON to Ruby Converter
ConvertersConvert a JSON object to idiomatic Ruby classes with typed attributes instantly in your browser. Powered by quicktype-core. One-way. 100% client-side.
JSON →
Ruby
JSONjson
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Rubyruby
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Input: 315 chars
About JSON to Ruby Converter
The JSON to Ruby converter uses `quicktype-core` to generate idiomatic Ruby classes with typed attributes from a JSON sample. The output uses `Struct` or `Data` patterns with `initialize`, and attribute names are converted to snake_case. Post-processing via js-beautify produces clean, readable output. The UML class diagram view visualises the generated class hierarchy.
Features
- ✓Powered by quicktype-core for accurate Ruby type inference
- ✓Generates Ruby classes with snake_case attributes
- ✓Post-processed with js-beautify for clean formatting
- ✓UML class diagram view shows generated class hierarchy
- ✓Handles nested JSON objects → nested Ruby classes
- ✓Handles JSON arrays → typed Ruby array attributes
- ✓Download generated Ruby as a .rb file
- ✓Copy output to clipboard in one click
- ✓Web Worker processing — never blocks the UI
- ✓100% client-side — data never leaves your browser
Common Use Cases
- Generating Ruby model classes from JSON API responses
- Creating typed Ruby data structures from JSON schemas
- Scaffolding Ruby data classes for Rails or Sinatra apps
- Reverse-engineering JSON payloads to Ruby class definitions
Frequently Asked Questions
QIs the output compatible with standard Ruby?
The output uses plain Ruby classes and is compatible with Ruby 2.7+.
QIs my data sent to a server?
No. quicktype-core runs in a Web Worker inside your browser.