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GitHub Contribution Chart Generator vs Zenodo

Same instrument, two spec sheets — measured, not claimed.

APIGitHub Contribution Chart GeneratorNEW—ZenodoNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (derived from public GitHub profile data)Unverified
Free tierFree — no keyFree — limits not published
Rate limitUnpublished30 req/window · 29 remaining · resets 1783516620
In directory since2026-07-052026-07-05
operationalpartialdownno data

GitHub Contribution Chart Generator vs Zenodo: common questions

Which is more reliable, GitHub Contribution Chart Generator or Zenodo?

On our scheduled checks, Zenodo leads on measured uptime — GitHub Contribution Chart Generator at —% versus Zenodo at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do GitHub Contribution Chart Generator and Zenodo need an API key?

Neither needs a paid key — GitHub Contribution Chart Generator is callable with no signup, and Zenodo is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call GitHub Contribution Chart Generator and Zenodo from the browser?

Only Zenodo is browser-friendly — it returns CORS headers over HTTPS. GitHub Contribution Chart Generator needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are GitHub Contribution Chart Generator and Zenodo free for commercial use?

GitHub Contribution Chart Generator has unclear commercial terms, and Zenodo has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.