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CalcForge

JSONC to JSON Converter

Strip comments and trailing commas from JSONC config into strict, parseable JSON.

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JSONC/JSON5 Features We Support

Single-line comments
// comment
Multi-line comments
/* ... */
Trailing commas
{"a": 1,}
Unquoted keys
{key: "value"}
Single quotes
{'a': 'b'}
Hexadecimal numbers
0xFF

From JSONC to strict JSON

Editors and tools like VS Code happily read JSON with Comments (JSONC)—`//` lines, block comments, and trailing commas. Production parsers often do not. CalcForge strips non-standard syntax and emits strict JSON your API, database, or CI validator accepts.

Good fits

  • Publishing `tsconfig`-style configs to environments that require strict JSON
  • Removing explanatory comments before storing settings in a database
  • Preparing JSONC exports from design tools for downstream pipelines
  • Validating that commented drafts still represent valid data once cleaned
// JSONC input
{
  "host": "localhost", // dev only
  "port": 3000,
}

// Strict JSON output
{"host":"localhost","port":3000}

Practical notes

  • Comments are discarded—copy them elsewhere if you need documentation preserved.
  • Follow with Minify or Formatter depending on your delivery format.
  • JSON Schema validation requires strict JSON—convert before validating.

Frequently asked questions

Is JSONC the same as JSON5?

JSONC commonly means comments plus trailing commas. Exotic JSON5 features may need manual review—test output on your target parser.

Are my comments sent anywhere?

Processing happens in your browser. Comment text never leaves your device.

Can I convert back to JSONC?

Strict JSON cannot include comments. Re-add comments manually in an editor that supports JSONC.

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