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Guides
Short, practical explanations of what your connection numbers mean and what they affect in everyday use.
What is a good ping for gaming?
What 20 ms, 50 ms and 100 ms actually feel like in game, why latency climbs, and the practical steps that bring it down.
Why is my internet slow?
A step-by-step diagnosis for slow Wi-Fi, one-device problems, evening congestion, router issues and fast tests that still feel slow.
Download speed vs upload speed
Understand what each speed measures, why upload is often lower, which activities depend on each one, and how to diagnose slow results.
Why is my internet lagging with good speed?
A fast speed test can still hide high ping, jitter, Wi-Fi problems, congestion or poor routing. Learn how to find the real cause of lag.
Understanding your speed-test results
What download, upload, ping, jitter and packet loss each mean, and when each one actually matters.
How much speed do you need?
Practical starting points for browsing, HD and 4K streaming, video calls, gaming and livestreaming.
Why speed-test results vary
Wi-Fi signal, distance from the router, congestion, VPNs, other devices and server location.
Wi-Fi versus Ethernet
Why a wired connection tests more consistently, and how to get a fairer reading over Wi-Fi.
How TestConn measures your connection
The measurement method, what is measured in the browser, and why packet loss shows N/A.
Your IP address and network provider
What your public IP, provider, ASN and country tell you — and what happens when you use a VPN.
More in-depth guides are being written and will appear here as they are published.