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Nivesly Tools

Tools

JSON Formatter

Paste raw JSON to instantly beautify it with configurable indentation, or minify it to a single line. Syntax errors are detected and reported immediately.

FreeBeautify & MinifyError Detection

Input JSON

Formatted Output

Formatted output will appear here…

When to format vs. minify JSON

Use pretty-printing when reading, debugging, or reviewing JSON data. Use minification when sending JSON over a network or embedding it in code — removing whitespace can reduce payload size by 20–40% for typical API responses.

Common JSON syntax errors

  • Trailing commas after the last property or element (not allowed in standard JSON)
  • Single quotes instead of double quotes for strings and keys
  • Comments (not part of JSON standard)
  • Unquoted property keys