ddownload vs Kroki
Same instrument, two spec sheets — measured, not claimed.
ddownload vs Kroki: common questions
Which is more reliable, ddownload or Kroki?
Both are neck-and-neck — ddownload and Kroki 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, ddownload or Kroki?
ddownload has the lower median latency in our checks — ddownload responds in 365 ms versus Kroki at 633 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 ddownload and Kroki need an API key?
Kroki needs no key, while ddownload requires a free API key. If you want to start calling without signup, reach for Kroki first.
Can I call ddownload and Kroki from the browser?
Only Kroki is browser-friendly — it returns CORS headers over HTTPS. ddownload needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are ddownload and Kroki free for commercial use?
ddownload has unclear commercial terms, and Kroki 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.