JSON Formatting: Common Errors and Quick Fixes

JSON powers modern APIs, yet formatting issues cause frequent failures. Understanding common pitfalls helps you debug faster and ship reliably.

Common Errors

• Trailing commas
• Unquoted keys
• Single quotes instead of double quotes
• Invalid number formats
• Mismatched brackets

Best Practices

• Always use double quotes for keys and strings
• Validate before sending
• Keep payloads minimal and documented

Debugging

Use JSON Formatter to pretty-print, validate, and minify. If an error occurs, fix it where the tool highlights and re-validate.

FAQ

Should I minify in production?

Yes. Minified JSON reduces size and accelerates transmission.

How to handle large JSON?

Consider pagination or streaming APIs to avoid huge single payloads.