# Pino

🌲 super fast, all natural json logger

Repository: https://github.com/pinojs/pino
Canonical: https://ross.abutalabs.com/products/pino
Homepage: http://getpino.io
Language: JavaScript
License: MIT
License Family: permissive
Topics: logger, fast, json, nodejs, pino
Last push: 2026-08-25T10:35:00+00:00
Link (homepage): http://getpino.io

## Health v2 (maintenance only)
Score: 89/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 69, longevity 100
- inputs: {"age_days": 3851, "days_push": 8, "days_rel": 205, "gap_med": 5, "n_releases_24m": 24}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 18156, forks 993 (observed 2026-08-28T04:11:26.387680+00:00)

## What it is
Pino is a very fast, low-overhead JSON logger for Node.js (and Bare/Pear runtimes), with child loggers, redaction, and worker-thread transports. Its companion pino-pretty formats log lines for human-readable development output.

## Use cases
- add structured JSON logging to a Node.js service
- log with minimal performance overhead in production
- pretty-print logs during development
- attach contextual properties with child loggers
- redact sensitive fields from logs
- integrate logging with Express, Fastify, Koa, or Hapi

## When to choose
- you need high-throughput, low-overhead logging in Node.js
- you want structured JSON logs for log aggregation pipelines
- you use Fastify or other Node web frameworks and want first-class logging

## When to avoid
- you need human-readable logs by default without a prettifier transport
- you are not on Node.js or a compatible runtime
- you need built-in log shipping to external services without transports

## Facets
- artifact type: library
- maturity: stable
- function: logging, serialization, developer-tools
- domain: backend, developer-tools
- platform: cross-platform
- tags: -logger, low-overhead, pino-pretty, transports, child-loggers, nodejs

## Member repositories
- pinojs/pino (main) score 89
- pinojs/pino-pretty (plugin) score 83

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:26.387680+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 2026-08-29T17:02:08.519198+00:00, confidence not recorded.
  - readme: https://github.com/pinojs/pino (fetched 2026-08-28T04:11:26.387680+00:00, sha 1b9e8c36a650)
  - homepage: http://getpino.io (fetched 2026-08-29T08:00:50.154994+00:00, sha 306b57a3b813)
  - registry_npm: https://registry.npmjs.org/pino-pretty (fetched 2026-08-29T08:00:50.164142+00:00, sha eda3294240f3)
- Data as of 2026-08-30T08:39:29.467469+00:00.