About Controller Tester
Controller Tester is a free, browser-based tool built around one idea: tell you whether your gamepad actually works — in plain language, not a wall of raw numbers.
What it is
It checks every part of a game controller — face buttons, D-pad, bumpers, analog triggers and both sticks — and gives each analog stick a clear PASS / DRIFTING / FAIL drift verdict. It runs entirely in your browser through the standard Gamepad API, so there's nothing to install and it works with Xbox, PlayStation, Switch and most PC controllers.
Why it exists
Most "gamepad test" sites stop at raw axis values and button indices — a screen full of decimals you're left to interpret yourself. But you didn't come to read numbers; you came to answer a question: is my right stick drifting? do my bumpers still respond? are my triggers analog or just on/off? Controller Tester reads the same data those sites do, then actually answers the question — with a verdict, not homework.
What makes it different
A verdict, not just data
Responding isn't the same as accurate — a stick can move and still drift. The tester separates the two and tells you which.
Private by design
Everything runs locally in your browser. Your controller inputs and results are never uploaded; close the tab and they're gone.
Honest about limits
Where a browser genuinely can't test something — OS-reserved buttons, rumble strength on some platforms — we say so instead of faking a result.
Free, no sign-up
No accounts, no paywall, no downloads — just connect a controller and go.
Who's behind it
Controller Tester is built and maintained by an independent developer who got tired of guessing whether a controller fault was real or in their head. It's a small, focused project — not a corporation — and it's better because people tell us what's missing. Found a bug, have a feature idea, or a controller doing something strange? Get in touch — real messages get real replies.
Worried something's off? Find out in a few seconds.
Test your controller