PS4 Controller Tester
Plug in your PS4 controller, press any button, and see it light up instantly.
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What Does PS4 Controller Tester Check?
PS4 Controller Tester is a free browser-based tool that checks every input on your DualShock 4 controller in real time. It detects button presses, analog stick movement, trigger sensitivity, and D-pad direction inputs without requiring any software download. The tool runs entirely through the Gamepad API built into modern browsers, which reads your controller signal directly and displays the response on screen. It is ideal for diagnosing unresponsive buttons, stick drift, or trigger dead zones before blaming a game or console for the issue.
Supported Controllers and Devices
This tool supports the Sony DualShock 4 in all versions, including the original CUH-ZCT1 and the revised CUH-ZCT2 model. It works over both wired USB connection and Bluetooth pairing on Windows, macOS, Linux, ChromeOS, and Android. Most generic PS4-compatible gamepads and third-party controllers that follow standard HID input protocols are also recognized. The tool functions across Chrome, Edge, Opera, and other Chromium-based browsers. Firefox users may need to enable gamepad API support manually through browser settings before the controller input is detected.
How To Use This Tool
Plug your DualShock 4 into your computer using a USB cable, or pair it wirelessly via Bluetooth through your system settings. Open this page in a supported browser, then press any button on the controller to wake the gamepad connection. The on-screen controller layout will activate and begin reflecting your inputs live. Press each button, move both thumbsticks in full circles, and pull both triggers fully to test their range. The tool maps every input visually so you can confirm each one registers correctly without launching any game.
Understanding Your Results
When a button registers, it highlights on the controller diagram shown on screen. A thumbstick test showing full circular range with no snapping back to center indicates healthy analog input. If a button fails to light up when pressed, it likely has a hardware fault or connection issue. Trigger values should move smoothly from zero to one hundred percent with no jumps. Any input that registers without being touched is a sign of stick drift or a worn button contact, which usually means the controller needs cleaning or repair.
Frequently Asked Questions
Q: Why is my PS4 controller not being detected by the tester?
A: Make sure you press a button after connecting the controller, as browsers require user input before activating the Gamepad API. Also confirm you are using a supported browser like Chrome or Edge.
Q: Can I use this tool wirelessly over Bluetooth?
A: Yes, pair your DualShock 4 through your device's Bluetooth settings first, then open the tester and press any button to initialize the connection.
Q: Does this tool work on mobile or tablet?
A: It works on Android devices with Bluetooth gamepad support and a Chromium-based browser. iOS does not currently support the Gamepad API, so iPhone and iPad are not compatible.
Q: How do I know if my PS4 controller has stick drift?
A: Open the tester and leave both thumbsticks untouched. If the analog values move or the on-screen sticks shift without any input from you, your controller has stick drift.
Q: Will this tool work with third-party PS4 controllers?
A: Most third-party controllers that use standard HID protocol are recognized, but compatibility varies by brand. If the tester does not detect your controller, try a different USB port or browser.
Q: Is this PS4 controller tester safe to use?
A: Yes, the tool runs entirely in your browser using the native Gamepad API. No data is collected, no software is installed, and no account is required to use it.