fastify/fast-json-stringify

Health v2 · maintenance only

Adoption not part of the score

3703 stars · 224 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A Node.js library that generates fast JSON serialization functions from JSON Schema Draft 7 definitions, significantly faster than native JSON.stringify() for small payloads. It is a Fastify core component used to speed up HTTP response serialization.

Use cases

• serialize JSON responses faster than JSON.stringify
• generate a stringify function from a JSON schema
• speed up API response serialization in Node.js
• enforce a schema when serializing objects to JSON
• optimize serialization of small JSON payloads

When to choose

• you have a JSON schema for your payloads and need maximum serialization speed
• you are building high-throughput Node.js HTTP services with small-to-medium payloads
• you want schema-driven, consistent JSON output

When to avoid

• your payloads are very large, where the advantage over JSON.stringify shrinks or disappears
• you have no schema and cannot define one
• you are not in a JavaScript/Node.js environment

Facets

library · maturity stable

serialization developer-tools backend performance -schema stringify schema-based-serialization fastify nodejs javascript

Member repositories

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markdown · JSON · MCP: product_card(name="fastify/fast-json-stringify")