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Fix "Expected ',' or } after property value" Error

Complete guide to fixing this JSON syntax error

The "Expected ',' or } after property value" error occurs when JSON has a syntax issue with property separators. The parser expects either a comma to continue with more properties, or a closing brace to end the object.

This is usually caused by missing commas between properties or trailing commas. Learn how to fix it instantly using our free JSON Fixer tool.

Common Causes

  • Missing comma between properties
  • Trailing comma before closing brace
  • Extra comma in wrong place
  • Missing closing brace

Broken JSON Examples

❌ Missing Comma:

{
  "name": "John"
  "age": 30  ← Missing comma
}

Error: Expected ',' or } after property value

✅ Fixed JSON:

{
  "name": "John",
  "age": 30
}

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