SwiftCheck - Speed Test

About

SwiftCheck tests your internet speed directly in Chrome — no 
websites to visit, no accounts to create, no waiting for a page 
to load. Just click the icon and run.

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WHY MB/s AND NOT Mbps?
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Most speed tests report in Mbps (megabits). Your browser 
downloads, file manager, and every app on your PC show MB/s 
(megabytes). This causes constant confusion — you see "10 Mbps" 
on a speed test and wonder why your downloads only show 1.2 MB/s.

SwiftCheck shows MB/s — the real number that matches what you 
actually see when downloading a file.

  10 Mbps  →  1.25 MB/s
  50 Mbps  →  6.25 MB/s
  100 Mbps →  12.5 MB/s

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FEATURES
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- Ping / latency measurement
- Download speed in MB/s
- Upload speed in MB/s
- Connection quality rating (Excellent / Good / Fair / Poor)

Live animated speedometer — needle fluctuates like a real analog meter while the test runs

Dynamic dial scale — probes your speed first, then sets the scale to match your connection. A slow line gets a 0–3 scale with full needle travel. A fast line gets 0–100.

Results persist — close and reopen the popup anytime, your last result is still there with a timestamp

Light and dark theme — toggle in the header, saved across sessions

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PRIVACY
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SwiftCheck collects absolutely nothing. No analytics, no 
tracking, no accounts. Test traffic goes only to 
speed.cloudflare.com — the same infrastructure used by 
Cloudflare's own speed test. Results are stored locally on 
your device and never leave it.

Permissions used:
- storage — saves your theme preference and last result locally
- speed.cloudflare.com — download and upload test traffic only

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OPEN SOURCE
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SwiftCheck is fully open source. No build tools, no 
dependencies — plain HTML, CSS, and JavaScript. Read the code, 
modify it, or contribute on GitHub.