GitRacer

Race up to 12 public GitHub contribution histories on one shareable graph.

See the saved races · MIT license

GitRacer is now a static site. Every race page is prerendered from a saved snapshot (src/data/snapshot.json, taken 27 Oct 2026). The backend that fetched new profiles from GitHub is offline, so building a new lineup, refreshing, or switching periods shows a short notice instead.

Features

• Permanent race URLs such as /levelsio+marclou for every saved race
• Battle mode and cumulative graph mode
• Contribution totals, active days, streaks, and leader margins
• Responsive light, dark, and system themes
• No analytics, no cookies

Stack

Astro (static output) served by Cloudflare Workers Static Assets with a tiny router (worker/index.js) for the www and HTTPS redirects, 410 Gone on old API paths, and security headers.

Run locally

Requires Node.js 22.12+.

npm ci
npm run dev

Verify

npm test
npm run check
npm run build

Deploy

Manual only:

npm run deploy:preview   # gitracer-static on workers.dev (noindex)
npm run deploy           # production Worker `gitracer` on gitracer.io + www

scripts/export-snapshot.mjs is the one-off, read-only export that produced the snapshot.

GitRacer is not affiliated with GitHub.