Tools / JSON Formatter & Validator

JSON Formatter & Validator

Format, validate, and minify JSON data. Instantly prettify messy JSON with syntax highlighting and error detection.

9,200 AI Tokens Used
Jan 31, 2026 Created
developerdata
Categories
oEnter JSON to validate
Input
Output
Formatted JSON will appear here...

How This Tool Was Built

This tool was created entirely by AI. Here's the exact prompt used to generate it:

Prompt Used 
Create a JSON Formatter & Validator tool with these features:

1. Input textarea for pasting JSON
2. Output area showing formatted/prettified JSON
3. Validation with clear error messages showing line/position of errors
4. Format button to prettify JSON with proper indentation
5. Minify button to compress JSON to single line
6. Copy to clipboard button for the output
7. Syntax highlighting in the output (different colors for keys, strings, numbers, etc.)
8. Real-time validation indicator (valid/invalid status)
9. Clear button to reset both input and output

Use a clean, modern design with good visual feedback for errors.
AI
Claude AI Model
#
9,200 Tokens Used
100%
AI-Generated Code Origin