# simd-lite/simd-json

Rust port of simdjson

Repository: https://github.com/simd-lite/simd-json
Canonical: https://ross.abutalabs.com/products/simd-json
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: rust, json, simd, rust-crate, hacktoberfest
Last push: 2026-08-23T17:34:38+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 2719, "days_push": 10, "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 1420, forks 108 (observed 2026-08-28T04:04:40.519250+00:00)

## What it is
simd- is a Rust port of the extremely fast C++ simd library, providing SIMD-accelerated JSON parsing with Serde compatibility and DOM/tape parsing. It requires SIMD-capable hardware (AVX2, SSE4.2, NEON, or simd128) for best performance.

## Use cases
- parse large  files fast in rust
- high-throughput  parsing for a web service
- serde-compatible  deserialization with better performance
- parse  documents into a dom for manipulation
- speed up  ingestion in a data pipeline

## When to avoid
- you need guaranteed memory-safe code with no unsafe
- your platform lacks SIMD support and fallback speed is insufficient
- you only parse small JSON documents where serde_ is fast enough
- you need a one-to-one port of the C++ simd API

## Facets
- artifact type: library
- maturity: active
- function: parser, serialization
- domain: parsers, developer-tools, performance
- platform: rust, cross-platform, wasm
- tags: simd, serde, high-performance

## Member repositories
- simd-lite/simd-json (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:40.519250+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 2026-08-30T04:37:49.884345+00:00, confidence not recorded.
  - readme: https://github.com/simd-lite/simd-json (fetched 2026-08-28T04:04:40.519250+00:00, sha 83fcad185a3f)
  - registry_crates: https://crates.io/api/v1/crates/simd-json (fetched 2026-08-29T11:50:07.533375+00:00, sha bdcbcad5e7ff)
- Data as of 2026-08-30T08:39:29.467469+00:00.