For a JSON parse error, copy the full message and line/column first, then inspect the character at and just before that position. Check trailing commas, single quotes, unquoted keys, missing commas, unmatched brackets, and unescaped line breaks. If the input is really JSON5 config syntax, convert it to standard JSON before validating again.
JSON parse-error topic
JSON parse error line/column, trailing comma, and bracket debugging tools
A focused workflow for JSON parse error line and column lookup, trailing commas, single quotes, unquoted keys, missing braces, and JSON5-to-JSON cleanup.
JSON parse errorJSON parse error line columnJSON trailing comma errorJSON bracket mismatchJSON single quote errorJSON syntax error checker
Common lookup scenarios
Locate JSON syntax errors by line and column
Find trailing commas in arrays or objects
Detect single quotes, unquoted keys, and missing commas
Check whether braces and brackets are balanced
Convert JSON5 config into API-safe standard JSON
Recommended workflow
- Format JSON to trigger a precise parse error
- Inspect the line/column and the previous character
- Check commas, quotes, colons, and bracket depth
- Convert JSON5 syntax to standard JSON when needed
- Use Schema, JSONPath, or Diff to verify the final API structure
Related tool entries
A focused workflow for JSON parse error line and column lookup, trailing commas, single quotes, unquoted keys, missing braces, and JSON5-to-JSON cleanup.
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LookupToolChakanJSON Schema validator
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LookupToolChakanFAQ
For a JSON parse error, copy the full message and line/column first, then inspect the character at and just before that position. Check trailing commas, single quotes, unquoted keys, missing commas, unmatched brackets, and unescaped line breaks. If the input is really JSON5 config syntax, convert it to standard JSON before validating again.
How should I read a JSON parse error line and column?
Jump to the reported line and column, then also inspect the previous character. Many parsers report the position just after the actual mistake.
Why does JSON5 parse but standard JSON fail?
JSON5 allows single quotes, unquoted keys, comments, and trailing commas. APIs, databases, and structured data usually require strict standard JSON.
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