ScreenshotOne.com vs Userstack
Same instrument, two spec sheets — measured, not claimed.
ScreenshotOne.com vs Userstack: common questions
Which is more reliable, ScreenshotOne.com or Userstack?
On our scheduled checks, Userstack leads on measured uptime — ScreenshotOne.com at 98.9% versus Userstack at 99.44% 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, ScreenshotOne.com or Userstack?
ScreenshotOne.com has the lower median latency in our checks — ScreenshotOne.com responds in 205 ms versus Userstack at 266 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 ScreenshotOne.com and Userstack need an API key?
Both ask you to authenticate — ScreenshotOne.com uses an API key and Userstack uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.
Can I call ScreenshotOne.com and Userstack from the browser?
Yes — both ScreenshotOne.com and Userstack 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 ScreenshotOne.com and Userstack free for commercial use?
ScreenshotOne.com has unclear commercial terms, and Userstack 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.