Client-side engine
Internet speed test
Get a rough download estimate from this browser. Free. Upload not measured in v1.
This is a rough download estimate from Cloudflare measurement hosts in this browser. It is not a lab-grade meter, and upload is not measured in v1.
Download estimate
—
Latency sample
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- HTTPS measurement
- Estimate only
- Upload not measured in v1
Workflow
How to use Internet speed test
Three steps. This tab fetches measurement payloads from Cloudflare hosts. ToolStudio does not see those bytes.
- 01
Click Start.
Click Start.
- 02
Wait for the download samples.
Wait for the download samples.
- 03
Read the estimate.
Read the estimate.
Direct answers
Essential questions answered
Short answers for search and answer engines. Same facts as the FAQ.
How accurate is this speed test?
It is a quick browser estimate, not as rigorous as dedicated speed-test labs.
Do you see my traffic?
Measurement traffic goes to Cloudflare, not through ToolStudio servers.
Is upload measured?
Not in v1.
Practical applications
Good for everyday workflows
Quick download estimate
Rough download estimate using Cloudflare speed endpoints from this browser. Not a lab-grade meter.
Check if a link feels slow
Rough download estimate using Cloudflare speed endpoints from this browser. Not a lab-grade meter.
Sample latency to Cloudflare
Rough download estimate using Cloudflare speed endpoints from this browser. Not a lab-grade meter.
Got questions?
Frequently asked questions
Is the speed test free?
Yes on ToolStudio.
Why might it fail?
Firewalls can block measurement hosts.
Is this as accurate as Speedtest.net?
No. Treat it as an estimate.
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