JSON Validator & Beautifier

Validate, format, and beautify JSON data with our free online JSON tool.

Processing JSON data...

JSON Processing Result
JSON Tools Features
JSON Validation

Check if your JSON is syntactically correct with detailed error reporting

JSON Beautification

Format messy JSON with proper indentation and line breaks for readability

JSON Minification

Reduce JSON file size by removing unnecessary whitespace and formatting

Common JSON Issues
  • Missing Quotes: Keys and string values must be quoted
  • Trailing Commas: Not allowed in JSON objects or arrays
  • Single Quotes: Only double quotes are valid in JSON
  • Comments: JSON doesn't support comments (use JSONC for that)
  • Invalid Characters: Control characters must be escaped
  • Type Errors: Boolean values must be true/false (lowercase)
  • Structure Issues: Objects must have matching braces
  • Encoding Problems: UTF-8 encoding recommended

About JSON Validator & Beautifier

Our JSON validator and beautifier tool helps developers, designers, and data analysts work with JSON data more efficiently.

JSON Validation

Quickly identify syntax errors in your JSON with line and column numbers for precise debugging.

JSON Formatting

Transform compact JSON into beautifully formatted, human-readable JSON with proper indentation.

Did You Know?

JSON (JavaScript Object Notation) is a lightweight data-interchange format that's easy for humans to read and write, and easy for machines to parse and generate. It's the de facto standard for web APIs and configuration files.