JSON is the standard format for exchanging data between server APIs and web applications. However, missing commas or unclosed brackets often break code.
Common JSON Syntax Mistakes
- Trailing Commas: Commas after the last key-value pair are invalid in strict JSON.
- Unquoted Keys: All keys in JSON must be wrapped in double quotes.
- Single Quotes: JSON only accepts double quotes for strings.
Validating Safely
Pasting confidential application payloads into random online tools can leak API keys. Using a client-side JSON parser ensures your data is validated inside browser memory with zero network uploads.