rxi/sj.h

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1545 stars · 45 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

sj.h is a tiny ~150-line C99 JSON parsing library distributed as a single header. It performs zero-allocation, streaming-style parsing and leaves number and string decoding to the user.

Use cases

• parse in c with no dependencies
• embed a minimal parser in an embedded project
• read config files without dynamic allocation
• extract fields from strings in c99
• handle parsing errors with line and column info

When to choose

• you need a tiny, dependency-free JSON parser in C
• you want full control over number and string decoding
• you cannot use dynamic memory allocation
• you want a public-domain licensed parser

When to avoid

• you need automatic number parsing or unicode surrogate handling
• you need JSON serialization/writing, not just parsing
• you want a full-featured JSON library with DOM building

Facets

library · maturity stable

parser serialization developer-tools parsers developer-tools files c cross-platform embedded single-header zero-allocation -parser public-domain minimalist

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For agents

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