GeoJSON.NET
A .NET library providing GeoJSON types and Newtonsoft.Json converters for serialization and deserialization.
What is GeoJSON.NET?
GeoJSON.Net is a .NET library that provides a complete implementation of the RFC 7946 GeoJSON format. It offers strongly-typed classes for all GeoJSON geometry and feature types, along with built-in Newtonsoft.Json converters for easy serialization and deserialization. This solves the problem of handling geographic data in .NET applications without having to manually parse or validate GeoJSON structures.
.NET developers building applications that need to process, generate, or exchange geographic data in GeoJSON format, such as mapping services, GIS tools, or location-aware APIs.
Developers choose GeoJSON.Net because it provides a spec-compliant, type-safe way to work with GeoJSON data while leveraging the familiar Newtonsoft.Json ecosystem. Its seamless integration reduces boilerplate code and ensures reliable handling of spatial data structures.
Overview
.Net library for GeoJSON types & corresponding Json.Net (de)serializers
Use Cases
Best For
- Building .NET APIs that consume or produce GeoJSON data
- Parsing geographic data from external sources into strongly-typed objects
- Serializing spatial objects to JSON for web mapping applications
- Validating GeoJSON structures in .NET backend services
- Converting between different geographic data formats and GeoJSON
- Developing GIS tools or spatial analysis applications in C#
Not Ideal For
- Applications using ASP.NET Core 3.1+ with System.Text.Json as the default serializer
- Projects requiring advanced spatial analysis or geometry operations beyond serialization
- Teams aiming to minimize dependencies by avoiding Newtonsoft.Json in modern .NET stacks
Pros & Cons
Pros
Implements the full GeoJSON specification, ensuring accurate representation of geographic data structures and interoperability with other systems.
Provides built-in converters that simplify serialization and deserialization, as shown in the README code snippets for common use cases.
Strongly-typed classes for all GeoJSON elements prevent common errors and enhance development experience with clear IntelliSense support.
An extensive test suite guarantees reliability and adherence to the standard, reducing bugs in production environments.
Cons
The library explicitly does not work with System.Text.Json, forcing extra configuration in ASP.NET Core 3.1+ and limiting modern .NET integration.
Dependency on Newtonsoft.Json can lead to version conflicts, increased bundle size, and maintenance overhead if not already part of the project.
Focuses solely on data structures; lacks built-in features for spatial calculations or geometry manipulations, requiring additional libraries.
Frequently Asked Questions
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