Professional GeoJSON Tools for Developers
GeoJSON Formatter & Validator
Format, validate, and analyze geographic data with our comprehensive GeoJSON formatter. Perfect for webdevelopers, GIS professionals, and anyone working with location-based data.
GeoJSON is a format for encoding geographic data structures using JavaScript Object Notation (JSON). It's widely used in web mapping applications, GIS systems, and location-based services.
Key Features:
- Human-readable: Easy to read and write
- Lightweight: Compact format for web applications
- Standardized: RFC 7946 specification
- Interoperable: Works with most mapping libraries
Supported Geometry Types:
Optional Properties:
- properties: Object containing feature attributes
- bbox: Bounding box array [minX, minY, maxX, maxY]
- crs: Coordinate Reference System (deprecated)
Basic Structure:
{
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"properties": {
"name": "Location Name"
},
"geometry": {
"type": "Point",
"coordinates": [lng, lat]
}
}
]
}Required Properties:
- type: Must be "FeatureCollection", "Feature", or geometry type
- features: Array of Feature objects (for FeatureCollection)
- geometry: Geometry object with type and coordinates
- coordinates: Array of coordinate positions
Web Mapping
Display geographic data on interactive maps using libraries like Leaflet, Mapbox, or Google Maps.
GIS Applications
Exchange spatial data between different GIS software and systems.
Location Services
Store and transmit location data for mobile apps and location-based services.
Data Visualization
Create choropleth maps, heat maps, and other geographic visualizations.
API Responses
Return geographic data from REST APIs and web services.
Spatial Analysis
Perform geometric operations and spatial queries on geographic data.
Step-by-Step Guide:
- 1Input Your Data: Paste GeoJSON data into the input field or upload a .geojson/.json file
- 2Choose Mode: Select "Format" to beautify or "Minify" to compress your GeoJSON
- 3Configure Settings: Adjust indentation, sorting, and validation options
- 4Process: Click the "Format" or "Minify" button to process your data
- 5Review Results: Check validation errors and view statistics
- 6Export: Copy to clipboard or download the formatted GeoJSON
Tips & Best Practices:
- Validate First: Always validate your GeoJSON before using it in applications
- Use Proper Coordinates: Ensure coordinates are in [longitude, latitude] order
- Close Polygons: First and last coordinates of polygon rings must be identical
- Add Properties: Include meaningful properties for better data usability
- Consider File Size: Use minification for production to reduce bandwidth
- Test with Samples: Use our sample data to understand different geometry types
- JSON syntax validation
- GeoJSON structure compliance
- Geometry type validation
- Coordinate array validation
- Feature property checking
- CRS compatibility warnings
- Customizable indentation (2, 4, 8 spaces, tabs)
- Alphabetical key sorting
- Automatic bounding box calculation
- Minification for production use
- Geometry coordinate validation
- Statistical analysis and reporting
Why Use Our GeoJSON Formatter?
RFC 7946 Compliant
Full compliance with the official GeoJSON specification
All Geometry Types
Support for Point, LineString, Polygon, and all multi-geometry types
Advanced Validation
Comprehensive error checking with detailed feedback
Production Ready
Minification and optimization for web applications
Perfect for Web Mapping
Leaflet Integration
Ready-to-use GeoJSON for Leaflet mapping applications
Mapbox Compatible
Optimized for Mapbox GL JS and Mapbox Studio
Google Maps Ready
Compatible with Google Maps JavaScript API
OpenLayers Support
Works seamlessly with OpenLayers mapping framework
Frequently Asked Questions
What is GeoJSON and why is it important?
GeoJSON is a format for encoding geographic data structures using JavaScript Object Notation (JSON). It's important because it provides a standardized, lightweight, and human-readable way to represent geographic features like points, lines, and polygons. GeoJSON is widely supported by web mapping libraries, GIS software, and location-based services, making it essential for modern web mapping applications.
How do I validate GeoJSON data for errors?
Our GeoJSON validator performs comprehensive checks including JSON syntax validation, GeoJSON structure compliance, geometry type validation, coordinate array validation, and feature property checking. It provides detailed error messages with specific paths to help you identify and fix issues. The validator checks against the RFC 7946 specification and provides warnings for best practices.
What geometry types does GeoJSON support?
GeoJSON supports seven geometry types: Point (single location), LineString (connected line segments), Polygon (closed shape), MultiPoint (multiple points), MultiLineString (multiple line strings), MultiPolygon (multiple polygons), and GeometryCollection (collection of geometries). It also supports Feature (geometry with properties) and FeatureCollection (array of features).
Can I format large GeoJSON files with this tool?
Yes, our formatter can efficiently handle large GeoJSON files. All processing happens locally in your browser using optimized algorithms, so there are no server-side limitations. The tool provides real-time statistics and can process files with thousands of features while maintaining good performance.
Is my GeoJSON data secure when using this tool?
Absolutely. All GeoJSON processing happens entirely in your browser - your data never leaves your device or gets sent to our servers. This ensures complete privacy and security for sensitive geographic data. You can use the tool offline once the page is loaded.
What's the difference between formatting and minifying GeoJSON?
Formatting (beautifying) adds proper indentation, line breaks, and spacing to make GeoJSON human-readable and easier to debug. Minifying removes all unnecessary whitespace, line breaks, and formatting to create the smallest possible file size, which is ideal for production use to reduce bandwidth and improve loading times.
How do I use GeoJSON in web mapping applications?
GeoJSON can be used with popular mapping libraries like Leaflet, Mapbox GL JS, OpenLayers, and Google Maps. You can load GeoJSON data directly into these libraries to display points, lines, and polygons on interactive maps. The formatted and validated GeoJSON from our tool is ready to use in any mapping application.
What is a bounding box in GeoJSON?
A bounding box (bbox) is an optional array that defines the minimum rectangle that contains all the coordinates in a GeoJSON object. It's formatted as [minX, minY, maxX, maxY] or [west, south, east, north]. Our tool can automatically calculate and add bounding boxes to improve performance in mapping applications.
Ready to Get Started?
Choose from our suite of JSON tools to start processing your data right away.