JSON Formatter & Minifier

Format, validate, beautify or minify JSON with clear error messages.

Text Tools Runs in your browser. Files never leave your device.
Valid JSON (0.21 KB)
Input JSON StringEditable
Formatted Result (beautify)Read-Only Output

What is a JSON Formatter & Validator?

JSON (JavaScript Object Notation) is the most widely used data-interchange format across web APIs, microservices, and client-server architectures. A **JSON Formatter & Validator** cleans up minified API responses by adding proper line breaks and indentation, while validating syntax against JSON specifications.

Key Features

  • Real-time Syntax Validation: Instantly flags missing commas, unquoted keys, or bracket mismatches.
  • Configurable Indentation: Choose 2-space, 4-space, or 8-space indentation for optimal readability.
  • Minification Mode: Strip all unnecessary whitespace to reduce JSON payload size for network optimization.
  • 100% Client-side & Secure: Your JSON data is formatted entirely in your browser and never sent to external servers.
JSON to CSVConvert JSON array of objects to CSV format.JSON to TypeScriptGenerate TypeScript interfaces from a JSON sample.YAML to JSONConvert YAML config files into JSON data objects.Word CounterCounts words, characters, sentences, paragraphs, and reading time.Text to LowercaseConvert all uppercase letters in string to lowercase.Text to UppercaseConvert all lowercase letters in string to uppercase.