JSON Validator
Validate JSON input for proper structure and syntax. Format, minify, and analyze JSON data. Perfect for debugging API payloads or configuration files.
JSON Format Guide
✓ Valid JSON
- • Strings must be in double quotes
- • Object keys must be strings
- • No trailing commas
- • Use null instead of undefined
- • Numbers can be integers or decimals
- • Booleans are true or false
- • Arrays can contain mixed types
✗ Common Errors
- • Single quotes instead of double
- • Unquoted object keys
- • Trailing commas
- • Comments (not allowed in JSON)
- • Undefined values
- • Functions or methods
- • Circular references
Sample JSON Data
About JSON Validator
A comprehensive JSON validation tool that checks JSON data for proper syntax, structure compliance, and formatting standards. This tool provides detailed error reporting, automatic formatting, and minification capabilities to help developers work with JSON data efficiently and accurately.
Why use a JSON Validator?
JSON is widely used in APIs, configuration files, and data exchange, but syntax errors can cause application failures and integration issues. This validator provides instant feedback on JSON structure problems, saving debugging time and ensuring your JSON data meets standards before deployment or data processing.
Who is it for?
Essential for API developers testing request/response payloads, frontend developers working with JSON data, backend engineers validating configuration files, and data analysts processing JSON datasets. Perfect for anyone who needs to ensure JSON data integrity and proper formatting.
How to use the tool
- Paste your JSON data into the input area or upload a JSON file
- The tool automatically validates syntax and highlights any errors
- Review detailed error messages with line numbers and descriptions
- Use the format option to beautify and properly indent valid JSON
- Copy the validated and formatted JSON for use in your applications
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