Overview
Instant internet speed test in MB/s. Ping, download & upload — right in your browser.
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. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHY MB/s AND NOT Mbps? ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 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 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ FEATURES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - 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 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ PRIVACY ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 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 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ OPEN SOURCE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SwiftCheck is fully open source. No build tools, no dependencies — plain HTML, CSS, and JavaScript. Read the code, modify it, or contribute on GitHub.
Details
- Version1.2.1
- UpdatedMarch 27, 2026
- Offered byadnantemur
- Size21.35KiB
- LanguagesEnglish
- Developer
Email
adnantemur.se@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
Support
For help with questions, suggestions, or problems, visit the developer's support site
