Image-Charts vs OpenQR
Same instrument, two spec sheets — measured, not claimed.
Image-Charts vs OpenQR: common questions
Which is more reliable, Image-Charts or OpenQR?
On our scheduled checks, OpenQR leads on measured uptime — Image-Charts at 99.02% versus OpenQR at 100% 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, Image-Charts or OpenQR?
Image-Charts has the lower median latency in our checks — Image-Charts responds in 80 ms versus OpenQR at 1125 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 Image-Charts and OpenQR need an API key?
Image-Charts needs no key, while OpenQR requires a free API key. If you want to start calling without signup, reach for Image-Charts first.
Can I call Image-Charts and OpenQR from the browser?
Only OpenQR is browser-friendly — it returns CORS headers over HTTPS. Image-Charts needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Image-Charts and OpenQR free for commercial use?
Image-Charts has unclear commercial terms, and OpenQR 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.