JSON Formatter & Validator
Format, beautify, and validate your JSON data.
📘 How It Works
Parsing
JSON.parse() attempts to parse input. If successful, the JSON is valid. Errors indicate syntax problems.
Beautifying
JSON.stringify() with 2-space indentation reformats JSON with proper line breaks and indentation.
Minifying
JSON.stringify() without spaces removes all whitespace. Smallest file size for production use.
Validation
Parsing reveals errors: missing quotes, trailing commas, invalid characters. Error message pinpoints the issue.
Syntax Highlighting
Formatted output uses monospace font for code readability. Easy to spot structure at a glance.
💡 Common Use Cases
API Debugging
Format API responses for readability. Understand nested data structures from REST endpoints.
Config File Editing
Validate package.json, tsconfig.json, or other config files. Find syntax errors before they cause issues.
Log Analysis
Format JSON log entries for debugging. Expand minified log data to readable format.
Data Preparation
Minify JSON before embedding in HTML or sending over network. Reduce payload size.
Documentation
Format JSON examples for documentation. Ensure consistent, readable code samples.
Learning JSON
Understand JSON structure by formatting examples. See how nesting and arrays work visually.