JSON to CSON

CSON trades JSON punctuation for readability: colons instead of colons-and-quotes, indentation instead of braces, arrays as blocks. Config files in that style are genuinely easier to scan — but most data starts life as JSON, and writing CSON by hand means re-indenting everything and remembering the quoting rules.

Convert JSON to CSON produces idiomatic CSON from any JSON document in one click: bare keys, single-quoted strings, block arrays with objects wrapped in braces, and clean two-space indentation. Paste, copy, done.

• Idiomatic output: Bare keys, single-quoted strings, block arrays and indented nesting.
• Block arrays: key: [ lines with indented elements and a matching closing bracket.
• Objects in arrays: Multi-object arrays use braces so elements stay unambiguous.
• Smart quoting: Simple names stay bare; unusual keys and complex strings are quoted automatically.
• Full type support: Numbers, booleans, nulls and nested structures all survive.
• Live preview: The CSON output updates as you type.
• Copy and download: Export the result as a .cson file instantly.
• Private: All processing happens in your browser; nothing is uploaded.

1. Paste your JSON into the input pane.
2. Review the live CSON — quoting and indentation are applied automatically.
3. Copy or download the .cson file.

Example 1 — Tooling migration. A team moves a config from JSON to CSON for a legacy CoffeeScript tool, converting the payload and verifying the structure reads cleanly before deployment.

Example 2 — Legacy package config. A developer converts a modern JSON config into the CSON shape expected by older Atom-style packages and editor tooling.

Example 3 — Readable defaults. An architect publishes a CSON sample config in documentation because the block style is easier to review in diffs than nested JSON.

Example 4 — Round-trip editing. A developer converts JSON to CSON, hand-edits the friendly format, and converts back with the companion tool.

• Friendly format: CSON output is readable and diff-friendly.
• Correct by construction: Quoting and indentation follow the format rules automatically.
• Lossless types: Numbers, booleans and nesting survive conversion.
• Zero data movement: The document is converted locally and never uploaded.
• Instant results: Live output updates with every keystroke.