Multiple Controller Testing Suite
Connect and test up to 4 gamepads simultaneously. Compare input responses, switch between players, and troubleshoot multiplayer setups.
Plug in your controller & press any button, or test using keyboard emulation / auto demo.
Need complete controller diagnostics?
Test all buttons, sticks, triggers, deadzones, and developer telemetry together.
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Overview & Diagnostic Methodology
Testing local multiplayer games? Connect up to 4 controllers and switch seamlessly between Player slots with dedicated live telemetry for each device.
Key Diagnostic Parameters
How to Test Step-by-Step
- 1Connect two or more controllers via USB or Bluetooth.
- 2Press a button on each controller so the browser enumerates them.
- 3Use the Controller Switcher tabs to toggle live diagnostics for each player.
What This Test Verifies
Frequently Asked Questions
How many controllers can the browser detect?
The HTML5 Gamepad API standard supports at least 4 concurrent gamepads, and up to 8 on modern Chromium browsers.
Can I connect different controller brands simultaneously?
Yes! You can connect a PS5 controller, an Xbox Wireless controller, and a Nintendo Switch Pro controller simultaneously; each receives an independent slot index.