How JSON Formatting and Validation Work
Understand the difference between readable JSON, valid JSON and data that actually meets an application contract.
Formatting is not validation
Formatting changes whitespace and indentation so a JSON document is easier to read. Validation checks whether the document follows JSON grammar. A formatter must parse valid JSON before it can safely rebuild it.
{
"project": "KaseShift",
"private": true
}Useful error locations
Missing commas, unmatched brackets, unquoted keys and trailing commas are common failures. A useful validator reports the position while preserving the original input for correction.
Schemas and generated types
A schema describes expected shape and constraints; it does not prove that data is trustworthy. Generated TypeScript or Zod output is a starting point that should be reviewed against real domain requirements.
Before sharing sample JSON, remove or anonymise credentials, identifiers and personal data. Automated PII detection is helpful but can miss sensitive values.