# Jackson

General data-binding package for Jackson: works on streaming API (core) implementation(s)

Repository: https://github.com/FasterXML/jackson-databind
Canonical: https://ross.abutalabs.com/products/jackson
Language: Java
License: Apache-2.0
License Family: permissive
Topics: jackson, json, jackson-databind, hacktoberfest
Last push: 2026-08-21T20:02:11+00:00
Link (homepage): https://github.com/FasterXML/jackson

## Health v2 (maintenance only)
Score: 76/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 35, longevity 100
- inputs: {"age_days": 5367, "days_push": 12, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3745, forks 1510 (observed 2026-08-28T04:08:16.087506+00:00)

## What it is
Jackson is the de facto standard JSON parsing and data-binding library for Java and the JVM, providing a streaming parser/generator, POJO-to-JSON databinding, and modules for formats like YAML, CSV, CBOR, and Avro. It is a mature, actively maintained multi-module project with recent Jackson 3.x releases.

## Use cases
- serialize and deserialize JSON in Java
- convert POJOs to and from JSON
- parse large JSON files with streaming
- read and write YAML, CSV, or CBOR on the JVM
- bind JSON to Kotlin data classes
- consume and produce JSON in REST APIs

## When to choose
- you need JSON processing on the JVM with maximum ecosystem compatibility
- you want high-performance streaming parsing of large documents
- you need support for multiple data formats beyond JSON
- you want a battle-tested, widely adopted serialization library

## When to avoid
- you need JSON processing in a non-JVM language
- you want a minimal zero-dependency JSON parser for simple use cases
- you need schema validation as a first-class feature (use dedicated validators)

## Facets
- artifact type: library
- maturity: stable
- function: serialization, parser, json, csv, data-science
- domain: developer-tools, backend, apis, files
- platform: jvm, cross-platform
- tags: json-serialization, data-binding, jvm, streaming-parser, dataformats

## Member repositories
- FasterXML/jackson-databind (main) score 76
- FasterXML/jackson (docs) score 74
- FasterXML/jackson-core (backend) score 76
- FasterXML/jackson-module-kotlin (plugin) score 77
- FasterXML/jackson-annotations (sdk) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:16.087506+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 2026-08-29T17:20:59.779230+00:00, confidence not recorded.
  - readme: https://github.com/FasterXML/jackson-databind (fetched 2026-08-28T04:08:16.087506+00:00, sha 95d894583a63)
  - homepage: https://github.com/FasterXML/jackson (fetched 2026-08-29T08:20:57.513825+00:00, sha 869045dcd966)
- Data as of 2026-08-30T08:39:29.467469+00:00.