About this tool
Run Ruby online with ruby.wasm in your tab. The VM downloads once; your source is never uploaded. Ruby Playground runs in the browser on DevTools. There is no signup, and your input stays on this device unless the tool explicitly performs a live network lookup.
What this tool does not do
- Ruby Playground is a free in-browser utility, not a hosted API. It does not keep server-side history and is not a substitute for production verification in your own stack.
How do I use this tool?
How do I use Ruby Playground?
Open Ruby Playground, enter or paste your input, and copy the result. The page works without an account.
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