# JamesNK/Newtonsoft.Json

Json.NET is a popular high-performance JSON framework for .NET

Repository: https://github.com/JamesNK/Newtonsoft.Json
Canonical: https://ross.abutalabs.com/products/newtonsoftjson
Homepage: https://www.newtonsoft.com/json
Language: C#
License: MIT
License Family: permissive
Topics: json, c-sharp
Last push: 2026-08-13T14:42:55+00:00

## Health v2 (maintenance only)
Score: 69/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 16, longevity 100
- inputs: {"age_days": 5310, "days_push": 20, "days_rel": 351, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 11315, forks 3297 (observed 2026-08-28T04:10:46.724111+00:00)

## What it is
Json.NET (Newtonsoft.Json) is the most popular high-performance JSON framework for .NET, providing serialization, LINQ to JSON, JSON Path queries, and XML conversion. It has over a billion NuGet downloads and supports a wide range of .NET platforms.

## Use cases
- serialize .NET objects to JSON
- deserialize JSON into C# classes
- parse and query JSON without a class
- query JSON with JSON Path
- convert between JSON and XML
- read and write indented readable JSON

## When to choose
- you need battle-tested JSON handling in .NET with broad platform support
- your JSON maps closely to .NET classes but you also need flexible manual parsing
- you need JSON Path querying or XML conversion alongside serialization

## When to avoid
- you are on modern .NET and prefer the built-in System.Text.Json for performance and no extra dependency
- you need a JSON Schema validator, which is a separate commercial product (Json.NET Schema)

## Facets
- artifact type: library
- maturity: stable
- function: serialization, parser, json
- domain: developer-tools, backend, apis, web-development
- platform: dotnet, cross-platform, windows
- tags: json-serializer, linq-to-json, json-path, nuget, c-sharp, macos, linux, ios, android

## Member repositories
- JamesNK/Newtonsoft.Json (main) score 69

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:46.724111+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:15:57.752703+00:00, confidence not recorded.
  - readme: https://github.com/JamesNK/Newtonsoft.Json (fetched 2026-08-28T04:10:46.724111+00:00, sha 95c71bfea47f)
  - homepage: https://www.newtonsoft.com/json (fetched 2026-08-29T08:14:39.434864+00:00, sha c01386b34941)
  - site_page: https://www.newtonsoft.com/store (fetched 2026-08-29T08:14:39.444912+00:00, sha e723b3cfc368)
  - site_page: https://www.newtonsoft.com/json/help (fetched 2026-08-29T08:14:39.449539+00:00, sha 17d23aca19b5)
- Data as of 2026-08-30T08:39:29.467469+00:00.