# speedracer/speedracer

Collect performance metrics for your library/application.

Repository: https://github.com/speedracer/speedracer
Canonical: https://ross.abutalabs.com/products/speedracer
Language: JavaScript
License: MIT
License Family: permissive
Topics: performance, performance-analysis, performance-metrics, performance-test, performance-testing, runner, chrome-headless
Last push: 2022-07-24T17:31:36+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3411, "days_push": 1501, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1849, forks 23 (observed 2026-08-28T04:05:44.167228+00:00)

## What it is
Speedracer is a performance runner, like a test runner but for performance, that executes 'race' scripts in headless Chrome and collects detailed traces and reports on scripting, rendering, and painting. It uses the Chrome DevTools protocol to profile JavaScript libraries and applications.

## Use cases
- collect performance metrics for my javascript library
- profile code in headless chrome
- run performance tests like unit tests
- generate chrome traces for scripting and rendering
- benchmark my application's runtime performance

## When to choose
- you want a test-runner-style workflow for collecting Chrome performance traces
- you need detailed scripting, rendering, and painting metrics from headless Chrome

## When to avoid
- you need a maintained tool - the project is explicitly unmaintained
- you need performance testing outside of Chrome
- you need load testing or HTTP API benchmarking rather than browser profiling

## Facets
- artifact type: cli-tool
- maturity: abandoned
- function: benchmarking, monitoring, cli
- domain: performance, developer-tools, testing
- platform: cli, windows
- tags: chrome-headless, performance-metrics, tracing, chrome-devtools-protocol, profiling, nodejs, macos, linux

## Member repositories
- speedracer/speedracer (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:44.167228+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 2026-08-30T03:17:46.554157+00:00, confidence not recorded.
  - readme: https://github.com/speedracer/speedracer (fetched 2026-08-28T04:05:44.167228+00:00, sha fa19bea44652)
- Data as of 2026-08-30T08:39:29.467469+00:00.