JSON Formatter, Validator & Comparison Tool
Format, validate, compare, and merge JSON data instantly. With advanced features like syntax highlighting, error detection, and visual diff comparison.
UtilityNestAI's free JSON Formatter is a comprehensive tool that helps you format, validate, compare, and merge JSON data instantly. With advanced features like syntax highlighting, error detection, and visual diff comparison, you can quickly identify differences between JSONs and ensure your code is clean and reliable. Perfect for developers working with APIs, configuration files, or data migrations.
Beyond basic formatting, this tool offers powerful features like JSON comparison to find differences between two JSON files,JSON merging to combine multiple JSON objects, and conversion to XML, CSV, and YAML. It's a complete JSON toolkit with visual diff view, deep merge capabilities, and syntax validation – everything you need in one place. Fast, secure, and browser-based, your data never leaves your device.
Related Tools
JSON Tools
- JSON Validator
- JSON Compare
- JSON Merge
- JSON Editor
- JSON Pretty Print
- JSON Viewer
- JSON Parser
- JSON Minify
Converters
- JSON to XML
- JSON to CSV
- JSON to YAML
- XML to JSON
- YAML to JSON
- CSV to JSON
Other Formatters
- XML Formatter
- YAML Formatter
- HTML Formatter
- CSS Formatter
- JavaScript Beautifier
- SQL Formatter
Features
Format & Beautify
Instantly format and beautify JSON data with proper indentation and spacing. Multiple formatting options including 2/3/4 spaces and tabs.
Compare & Merge
Visual diff comparison between JSON files. Merge multiple JSON objects with deep merge support and conflict resolution.
Format Conversion
Convert JSON to XML, CSV, or YAML formats. Support for all major data interchange formats with validation.
Developer Features
Syntax highlighting, error detection, line numbers, and tree view. Perfect for debugging and development.
Frequently Asked Questions
What is a JSON Comparison Tool?
A JSON Comparison Tool helps you find differences between two JSON files or objects. It visually highlights added, removed, and modified values, making it easy to track changes in configuration files, API responses, or data migrations.
How do I compare two JSON files?
Simply paste your JSON data into the two editors or use the "Upload JSON File" buttons. Click "Compare" to see a detailed breakdown of differences, with color-coding for added (green), removed (red), and modified (yellow) values.
Can I merge multiple JSON files?
Yes! Our JSON Merge feature lets you combine two JSON objects intelligently. It handles nested objects, arrays, and primitive values, with options to customize how conflicts are resolved.
What formats are supported?
Beyond JSON comparison and merging, you can convert your JSON to XML, CSV, and YAML. The tool also supports formatting, validation, and syntax highlighting for all these formats.
Why use UtilityNestAI's JSON tools?
Our tools offer advanced features like visual diff comparison, deep JSON merging, and format conversion, all with a clean, developer-friendly interface. Everything is processed locally in your browser for maximum security and speed.