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Real browser measurements. No invented hardware data.

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Tools/Internet & network/Speed Test

Internet & network

Usually 2–10 seconds · Method 3.0

Internet Speed Test

Warm the browser-to-server route, measure eight uncached round trips, calibrate a small transfer, stream an adaptive 2–16 MB payload, and report median latency, P95 latency, jitter, bytes read, and observed transfer rate.

network

Test setup

Run Speed Test

Runs the Network measurement used by this test.

Local only

This run will check

Standard · 1 phase
  • Server networkLatency, jitter, and download speed to this server.

Close heavy tabs and keep the same power mode when comparing devices.

Ready to run

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Transparent method

What this test tells you

The workload, raw readings, progress, and final browser score are visible. Scores are a relative 0–100 reference under similar conditions, not a hardware certification.

Source
Measured workload
Privacy
Local to this tab
Limits
Shown in the result

Before you run

Get a cleaner answer

  • Keep this tab visible and in the foreground.
  • Close heavy games, streams, and background tabs.
  • Use the same power mode for every comparison.
  • Repeat twice if the first result looks unusual.

Useful context

Common questions

Is this an ISP line-speed certification?

No. It measures the current browser's route to the server hosting Test and is affected by server distance, Wi-Fi, VPNs, browser overhead, and traffic.

Why is localhost or LAN speed extremely high?

A local preview or private-LAN route does not cross the public internet. The report labels that scope and excludes it from the overall browser score.

Troubleshooting

Fix common problems

Speed Test is not responding

  1. 1Reload the page and keep this tab visible while testing.
  2. 2Check browser permissions and connect the device you want to test directly.
  3. 3Try the same check in another current browser to separate a browser issue from a device issue.

Keep checking

Related tools

All tools
Internet & networkPing & Latency TestMeasure median ping, P95 latency, jitter, and route scope in the browser.Usually 2–10 secondsOpen