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OpenQR vs QuickChart

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

APIOpenQRHEALTHY80QuickChartHEALTHY96
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms1125318
P95 · ms28513598
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenQR vs QuickChart: common questions

Which is more reliable, OpenQR or QuickChart?

Both are neck-and-neck — OpenQR and QuickChart each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, OpenQR or QuickChart?

QuickChart has the lower median latency in our checks — OpenQR responds in 1125 ms versus QuickChart at 318 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 OpenQR and QuickChart need an API key?

QuickChart needs no key, while OpenQR requires a free API key. If you want to start calling without signup, reach for QuickChart first.

Can I call OpenQR and QuickChart from the browser?

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

Are OpenQR and QuickChart free for commercial use?

OpenQR has unclear commercial terms, and QuickChart 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.