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MIU.DEV
Developer Tool

JSON Formatter & Validator

Elevate your data workflow with high-precision interactive tool. Clean, validate, and structure your JSON with real-time error detection.

Editor Session
Valid JSON
input.json
✓ Valid JSON160 chars
output.json
Click Format or Minify to see output…
no output0 chars

How it works

📋

Paste Data

Insert your unformatted or minified JSON string into the left editor pane.

Auto-Process

The engine automatically detects the structure and highlights any syntax errors instantly.

📤

Export Clean

Copy the beautified, indented result back to your clipboard with one click.

🎨

Syntax Highlighting

Color-coded visualization for strings, numbers, booleans, and null values.

Aₓ

Auto-Format

Instantly fix indentation and spacing issues for maximum readability.

🔍

Error Detection

Precise line validation to catch trailing commas or missing quotes.