ReSmush.it vs ShotOG

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

Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms370185
P95 · ms2901647
AuthnoneapiKey
CORSyesno
HTTPSnoyes
Card requirednono
Commercial useunclearunclear
Data licenseN/A — optimization service, not a datasetUnverified
Free tierFree; per-image size cap applies (see docs)Free tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ReSmush.it vs ShotOG: common questions

Which is more reliable, ReSmush.it or ShotOG?

Both are neck-and-neck — ReSmush.it and ShotOG 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, ReSmush.it or ShotOG?

ShotOG has the lower median latency in our checks — ReSmush.it responds in 370 ms versus ShotOG at 185 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 ReSmush.it and ShotOG need an API key?

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

Can I call ReSmush.it and ShotOG from the browser?

Neither sends browser-friendly CORS headers reliably, so call ReSmush.it and ShotOG from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are ReSmush.it and ShotOG free for commercial use?

ReSmush.it has unclear commercial terms, and ShotOG 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.