Guides by topic

Each guide takes one complaint — the machine feels slow, the connection drops, the game lags, a peripheral will not respond, a counter disagrees with a form — and walks the checks in the order that rules things out fastest. They exist because the order matters: testing throughput before you know whether the VPN is leaking tells you almost nothing, and reading a ping figure without knowing which endpoint answered tells you less.

• Device tools without fake system profilersUse free browser readings for battery, screen, RAM estimates and connection class — with clear limits (especially on Safari/iOS).
• How to reduce lag and check if your VPN is leakingA short playbook for slow calls, high game ping, and “VPN on but still exposed” moments — with free browser tools for each step.
• How to fix high game ping (without lying about UDP)Ranked lag is usually path + Wi-Fi + VPN choice — not just “buy more Mbps.” Measure multi-region trends first.
• Your keyboard, mouse, mic or webcam is not respondingFour causes produce one identical failure on screen. This is the order that tells them apart with the fewest steps.
• Why two counters give your text different numbersThere is no single correct length for a string. Before trusting any counter, work out which rule the place you are pasting into uses.

Every tool named in a guide runs in your browser and keeps nothing. If you want the boundary of what a browser can measure at all, the methodology page states it directly.

How we measure →