Desktop Browsers

SpeedCurve provides the following desktop browsers to test with:

  • Chrome
  • Firefox
  • Internet Explorer 11

All our browsers auto update to the latest version as soon as new versions are released. You can also see the browser version at the bottom of each test result page:

Desktop browser use a viewport size of 1280x800, a pixel ratio of 1 and no CPU throttling running on AWS EC2 c5.large instances.

Emulated Phones & Tablets

We use the device emulation built into Chrome DevTools so your tests run in the same environment as your local development. SpeedCurve provides nine emulated phones & tablets or you can build your own custom browsers and control settings like viewport size, device pixel ratio, connection speed and even packet rate loss. We also throttle the CPU to better emulate JS script performance.

  • Apple iPad (WiFi, 768x1024@2X)
  • Apple iPhone 5 (Mobile 3G, 320x568@2X)
  • Apple iPhone 6 (Mobile 3G, 375x627@2X)
  • Apple iPhone 7 (Mobile 4G, 375x667@2X)
  • Apple iPhone 8 (Mobile 4G LTE, 375x667@2X)
  • Apple iPhone X (Mobile 4G LTE, 375x812@3X)
  • Google Nexus 6 (Mobile 3G, 412x659@3.5X)
  • Google Nexus 7 (Mobile 3G, 600x960@2X)
  • Google Nexus 10 (Mobile 3G, 800x1280@2X)
  • Google Pixel (Mobile 4G, 411x731@2.6X)
  • Google Pixel 2 (Mobile 4G LTE, 411x731@2.6X)
  • Samsung Galaxy S III (Mobile 3G, 360x640@2X)
  • Samsung Galaxy S4 (Mobile 3G, 360x640@3X)
  • Samsung Galaxy S7 (Mobile 4G, 360x640@3X)
  • Samsung Galaxy S8 (Mobile 4G LTE, 360x740@4X)

Connection Bandwidth

The connection for our tests is throttled to emulate the average bandwidth of users. When adding a Custom Browser you can adjust the connection speed to emulate slower mobile or faster fibre connections.

Download: 19.5 Mbps
Upload: 4.9 Mbps
Latency: 4ms

Download: 5 Mbps
Upload: 1 Mbps
Latency: 28ms

Mobile 3G
Download: 1.6 Mbps
Upload: 0.8 Mbps
Latency: 300ms

Mobile 4G
Download: 9 Mbps
Upload: 9 Mbps
Latency: 170ms

Mobile 4G LTE
Download: 12 Mbps
Upload: 12 Mbps
Latency: 70ms

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