Image to Link vs Kroki

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

Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms281633
P95 · ms9373183
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Image to Link vs Kroki: common questions

Which is more reliable, Image to Link or Kroki?

Both are neck-and-neck — Image to Link 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, Image to Link or Kroki?

Image to Link has the lower median latency in our checks — Image to Link responds in 281 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 Image to Link and Kroki need an API key?

Neither needs a paid key — Image to Link is callable with no signup, and Kroki is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Image to Link and Kroki from the browser?

Yes — both Image to Link and Kroki send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Image to Link and Kroki free for commercial use?

Image to Link 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.