Question 1

How does this internet speed test work?

Accepted Answer

It downloads several chunks of data from Cloudflare's public speed-test endpoint (speed.cloudflare.com) and measures how many megabits per second your connection sustained. It also fires small requests to measure latency and jitter. Everything runs in your browser.

Question 2

Why does my result differ from other speed tests?

Accepted Answer

Speed depends on the server location, time of day, device, Wi-Fi vs. ethernet, and how busy your network is. Different test providers use different servers, so numbers naturally vary by 10–20%.

Question 3

Does it measure upload speed?

Accepted Answer

This browser-only test focuses on download throughput, latency and jitter. True upload tests require a dedicated server endpoint, so they are out of scope for a private, no-upload tool.

Question 4

Is my data sent to GameZipper?

Accepted Answer

No. Test traffic goes to Cloudflare's public endpoint and back to your browser. GameZipper never receives your test data, IP address or results.