JSON Error Analyzer

What does a JSON Error Analyzer do?

Standard JSON parsers (like JSON.parse in Javascript) throw generic error messages that are difficult to translate. The JSON Error Analyzer dissects syntax errors, traces exactly where the syntax rules were broken, and explains them in plain English. This helps you understand why a parser failed and teaches you how to fix the structure.

How to Debug JSON Errors

1. Enter JSON: Paste your broken JSON string in the Input workspace. You can also select a typical error from the Load Error Sample dropdown.
2. Run Analyzer: Click the Analyze JSON Syntax button. The analyzer will parse the structure token-by-token.
3. Read Diagnostics: Review the diagnostics screen on the right. It tells you the exact Line and Column number of the error and compares what was expected against what was found.
4. Resolve Errors: Follow the suggestions listed in the checklist to correct your syntax.

Typical JSON Syntax Rules

• Strings & Keys: Standard JSON strictly requires all keys and string values to use double quotes ("key"). Single quotes are not allowed.
• Colons & Commas: Use colons (:) between keys and values, and commas (,) between key-value pairs or array elements.
• Brackets Balancing: Every opening brace ({) and bracket ([) must be closed by its matching counterpart (} or ]).

Visual Error Analysis Example

{
  name: "Sarah Connor",
  "role": "Moderator",
}

Error Type: Missing Double Quotes
Location: Line 2, Column 3
Expected: "name"
Found: name