JSON Validator Guide

Validation helps prevent runtime bugs by catching malformed JSON before it reaches your backend or frontend parser.

Common validation errors

1. Missing double quotes around keys.

2. Trailing comma before closing brace or bracket.

3. Extra or missing braces and brackets.

4. Invalid escaping inside string values.

Debugging workflow

Start with validator output, jump to the reported line and column, and fix one error at a time. Re-run validation after each fix because one syntax issue can create multiple follow-up errors.

After validation passes, switch to tree or grid view to verify semantic correctness of field names and value types.