Common JSON Errors and How to Fix Them

JSON is easy to work with, but small mistakes can break your code or tools. Here’s how to spot and fix the most frequent errors.

1. Missing Commas

Ensure each key-value pair in objects and each item in arrays is separated by a comma.

{
  "name": "Alice"
  "age": 25
}

Fix: Add the missing comma:

{
  "name": "Alice",
  "age": 25
}

2. Incorrect Quotes

Keys and string values must use double quotes.

3. Trailing Commas

Remove commas at the end of objects or arrays.

4. Unclosed Brackets or Braces

Always close { } and [ ] properly.

Using UtilitiesKit Tools

• JSON Validator – instantly highlights syntax errors
• JSON Prettifier – formats JSON for readability
• JSON → CSV Converter – transforms valid JSON to CSV

Tips to Avoid JSON Errors

• Use a code editor with JSON syntax highlighting
• Always validate JSON before conversion
• Keep nested objects as flat as possible for CSV/Excel conversions