JSON Validator

Common JSON Errors

JSON syntax is very strict. Here are the most common reasons your JSON might be invalid:

• Missing Quotes: All keys (property names) must be enclosed in double quotes (e.g., "name": "John", not name: "John").
• Single Quotes: Strings must be enclosed in double quotes ("), not single quotes (').
• Trailing Commas: You cannot have a comma after the last item in an array or object.
• Missing Commas: You must have a comma between items in an array or object.
• Unescaped Characters: Characters like newlines or tabs inside strings must be escaped (e.g., \n).

Privacy Note

All validation is done locally in your browser. Your JSON data is never sent to any server.