simdjson

Health v2 · maintenance only

Adoption not part of the score

24432 stars · 1315 forks observed · 2026-10-17

What it is AI-extracted, prompt v1, taxonomy v1, 2026-10-12, confidence 0.98

simdjson is a high‑performance C++ library for parsing JSON using SIMD instructions. It provides strict validation, minification and fast NDJSON handling with a simple API.

Use cases

• Parse multi‑gigabyte JSON files in seconds for data pipelines.
• Validate and minify JSON streams on high‑throughput servers.
• Extract records from NDJSON logs with minimal latency.
• Accelerate JSON handling in C++ microservices and databases.
• Perform fast UTF‑8 validation while parsing JSON payloads.
• Integrate ultra‑fast JSON parsing into analytics engines.

When to choose

• When you need the fastest possible JSON parsing in C++.
• If your deployment runs on CPUs with SIMD support (AVX2, SSE4.2, NEON).
• For applications that process large volumes of JSON data continuously.

When to avoid

• If your target platform lacks SIMD instructions or you need pure portability.
• When working primarily in languages without existing bindings.
• For small, infrequent JSON parsing where the overhead of the library isn’t justified.

Facets

library · maturity active

parser serialization web-development windows cpp simd avx2 sse42 neon high-performance zero-copy data-engineering linux macos

Member repositories

For agents

markdown · JSON · MCP: product_card(name="simdjson/simdjson")