Kroki vs OOPSpam
Same instrument, two spec sheets — measured, not claimed.
Kroki vs OOPSpam: common questions
Which is more reliable, Kroki or OOPSpam?
Both are neck-and-neck — Kroki and OOPSpam 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, Kroki or OOPSpam?
OOPSpam has the lower median latency in our checks — Kroki responds in 633 ms versus OOPSpam at 217 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 Kroki and OOPSpam need an API key?
Neither needs a paid key — Kroki is callable with no signup, and OOPSpam is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Kroki and OOPSpam from the browser?
Only Kroki is browser-friendly — it returns CORS headers over HTTPS. OOPSpam needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Kroki and OOPSpam free for commercial use?
Kroki has unclear commercial terms, and OOPSpam 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.