# pamburus/hl

A fast and powerful log viewer and processor that converts JSON logs or logfmt logs into a clear human-readable format.

Repository: https://github.com/pamburus/hl
Canonical: https://ross.abutalabs.com/products/hl
Language: Rust
License: MIT
License Family: permissive
Topics: rust, log-viewer, translates-json-logs, human, logging, json, cli, command-line-tool, logs, log, json-log, json-logging, json-logs, structured-logging, viewer, hl, logfmt
Last push: 2026-08-25T23:20:17+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 88, longevity 100
- inputs: {"age_days": 2220, "days_push": 8, "days_rel": 82, "gap_med": 12.5, "n_releases_24m": 29}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3270, forks 66 (observed 2026-08-28T04:07:53.050246+00:00)

## What it is
hl is a fast, high-performance CLI log viewer and processor written in Rust that converts JSON and logfmt logs into human-readable output. It supports filtering by field, level, and timestamp range, live follow mode, and fast chronological sorting with indexing.

## Use cases
- view  logs in human readable format
- filter structured logs by level and fields
- follow and sort logs from multiple files by timestamp
- pretty-print logfmt output in the terminal
- quickly search large log files by time range

## When to choose
- you regularly read JSON or logfmt logs from the terminal
- you need fast filtering and sorting over very large log files
- you want a jq-less, human-friendly alternative to raw structured logs

## When to avoid
- you need a centralized log aggregation service with a web UI
- your logs are plain unstructured text without JSON or logfmt

## Facets
- artifact type: cli-tool
- maturity: active
- function: logging, cli, developer-tools, parser
- domain: developer-tools, backend
- platform: cli, windows, rust
- tags: log-viewer, -logs, logfmt, structured-logging, log-processing, command-line, logging, linux, macos

## Member repositories
- pamburus/hl (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:53.050246+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 2026-08-29T18:43:49.698962+00:00, confidence not recorded.
  - readme: https://github.com/pamburus/hl (fetched 2026-08-28T04:07:53.050246+00:00, sha 14ea8ff79437)
- Data as of 2026-08-30T08:39:29.467469+00:00.