Tree View
JSON Tree View
Paste JSON on the left to explore its structure as an interactive tree
Try with sample configuration data
JSON Editor
Edit, validate, and format JSON online with real-time syntax checking — free tool
How to Edit JSON Online — Step by Step
Edit, validate, and format JSON data with real-time syntax checking in 3 simple steps
1
Step 1 – Paste or Upload JSON
Load your JSON data into the editor by pasting, uploading a file, or loading sample data. The editor instantly validates syntax and highlights any errors with clear messages.
Multiple Input Methods - Paste JSON directly, upload .json files, or load sample configuration data
Real-time Validation - Syntax errors are highlighted instantly with line and position details
Any JSON Structure - Handles deeply nested objects, arrays, and complex API responses
JSON Input Example
{
"api_config": {
"base_url": "https://api.example.com/v1",
"timeout": 30000,
"retry_attempts": 3
},
"database": {
"host": "localhost",
"port": 5432,
"name": "production_db"
},
"features": {
"authentication": true,
"caching": true,
"logging": {
"level": "info",
"format": "json"
}
}
}2
Step 2 – Edit with Real-Time Feedback
Modify keys, values, or structure directly in the editor. Every change is validated in real-time, and the statistics panel shows live size, line count, and validation status.
Syntax Highlighting - Color-coded keys, strings, numbers, and booleans for easy reading
Live Statistics - See size in bytes, line count, format status, and validation result
Undo / Redo - Full edit history with undo and redo support for safe editing
Real-time editing statistics
3 Metrics
Size
759 bytes
Lines
41
Valid
✓ Yes
Live statistics update as you edit — always know your JSON status
3
Step 3 – Format, Minify, or Export
Format your JSON for readability, minify for production, or export the edited file. Download as .json or copy to clipboard — all changes are preserved.
Format JSON - Add proper indentation and line breaks for human-readable output
Minify JSON - Remove whitespace for compact, production-ready JSON
Download or Copy - Save edited JSON as a file or copy to clipboard instantly
Format, minify, or export your JSON
3 Actions
Format JSON
Pretty print
Minify JSON
Compact output
Download
Save as .json
All changes are validated before export — your JSON is always correct
JSON Editor FAQs
Common questions about editing and validating JSON online
A JSON editor is an online tool that lets you edit, validate, and format JSON data in real-time. This JSON editor provides syntax highlighting, error detection, and instant validation to help you modify JSON files, API responses, or configuration data without installing software.
Yes! This JSON editor supports large JSON files with efficient rendering and validation. You can upload files, edit nested structures, and export the modified JSON — all in your browser with no file size limits for most use cases.
The JSON editor validates your data in real-time as you type. Syntax errors are highlighted immediately with clear error messages showing the exact line and position, helping you fix issues before saving or exporting.
Absolutely! Click the Upload button to select a .json file from your computer. The JSON editor loads your file instantly, allowing you to edit, validate, and download the modified version with all changes preserved.
Yes! The JSON editor handles deeply nested objects and arrays with proper indentation and syntax highlighting. You can expand, collapse, and edit nested structures easily, making it perfect for complex API responses and configuration files.
Yes! After editing your JSON, click Download to save the modified file to your computer. The JSON editor preserves all formatting and structure, ready to use in your applications, APIs, or configuration systems.
JSON TOOLS
Format, validate and process JSON
EXPORT & SHARE
Export to other popular formats
IMPORT TO JSON
Convert to JSON from other types
CODE GENERATION
Generate code from JSON data
OTHER FORMATTERS
Format and beautify other code formats