🚀 Quick Start

Enter/Paste: type or paste JSON into the input area
Real-time validation: checks syntax as you type; errors show below with line/column
Format: click ‘Format’ to pretty-print and replace the input with the result
Minify: click ‘Minify’ to remove whitespace/newlines; replaces the input
Copy: click the copy button below to copy the current content

📌 Common Scenarios

API debugging: quickly validate backend JSON and improve readability
Log inspection: format JSON snippets from logs to locate issues
Configuration: review structure, unify key order and indentation style
Code review: include clear JSON examples in PRs/docs
Pre-commit check: normalize JSON format/indentation before committing

🎛️ Formatting Parameters & Actions

Indent size: use the dropdown next to the buttons to choose Tab/2/4/8
Sort: click ‘Sort’ to alphabetically sort object keys (semantics unchanged); copy/submit uses current content

🧭 Usage Advice

Escapes: use valid escapes in strings (e.g., " and \ +)
Consistency: agree on indentation, key order, and schema within the team
Backup before sorting: sorting changes key order and cannot be auto-reverted; copy a backup first
Use ‘Line X, Column Y’ below the input and inspect around it
Minify then format to surface extra commas or mismatched quotes

⚠️ Limitations & Compatibility

No comments: // and /* */ are not standard JSON (use JSON5/JSONC tools)
No single quotes: 'text' is not a valid JSON string
No trailing commas: {"a":1,} or [1,] is invalid
Large JSON: to keep the page responsive, consider splitting; very deep/huge structures may be simplified

🔒 Privacy & Security

All processing happens in your browser; data never leaves your device

❓ FAQ

Why do single quotes/comments/trailing commas/NaN cause errors?

These are non-standard JSON (or JS extensions): strings must use double quotes; comments are not allowed; trailing commas are invalid; NaN/Infinity are unsupported.

How do I quickly locate the error?

Use the line/column info (e.g., line 10, column 5), then inspect surrounding quotes and brackets.

How to get the smallest JSON for transport?

Use ‘Minify’ to remove all whitespace and newlines; prefer minified JSON for production transfer.