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GitHub Contribution Chart Generator vs RSS2JSON

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

APIGitHub Contribution Chart GeneratorHEALTHY68RSS2JSONHEALTHY96
Uptime · 30d
Uptime · 90d79.4%96.1%
Uptime · 30d85.0%96.7%
P50 · ms4374178
P95 · ms49921882
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (derived from public GitHub profile data)Unverified
Free tierFree — no keyFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

GitHub Contribution Chart Generator vs RSS2JSON: common questions

Which is more reliable, GitHub Contribution Chart Generator or RSS2JSON?

On our scheduled checks, RSS2JSON leads on measured uptime — GitHub Contribution Chart Generator at 79.4% versus RSS2JSON at 96.1% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, GitHub Contribution Chart Generator or RSS2JSON?

RSS2JSON has the lower median latency in our checks — GitHub Contribution Chart Generator responds in 4374 ms versus RSS2JSON at 178 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do GitHub Contribution Chart Generator and RSS2JSON need an API key?

Neither needs a paid key — GitHub Contribution Chart Generator is callable with no signup, and RSS2JSON is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call GitHub Contribution Chart Generator and RSS2JSON from the browser?

Only RSS2JSON 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 RSS2JSON free for commercial use?

GitHub Contribution Chart Generator has unclear commercial terms, and RSS2JSON 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.