JoyCheck is a free, privacy-first gamepad tester that runs entirely in your browser. Connect any controller the W3C Gamepad API recognizes Xbox, PlayStation DualSense and DualShock 4, Nintendo Switch Pro, Joy-Con, 8BitDo, GuliKit, and generic PC pads and see the live state of every input as it happens.
What it checks: - Stick drift read your resting stick values and spot drift in about 30 seconds - Buttons every face button, bumper, trigger, D-pad, and stick click - Analog sticks live X/Y position, center offset, and full-range sweep - Triggers analog pressure from 0.00 to 1.00 - Vibration fire the rumble motors with five preset patterns - Deadzones visualize resting offset and response curve
Everything runs client-side through the W3C Gamepad API, reading the raw input value on every animation frame with no smoothing on top. There is no install, no signup, and nothing you do ever leaves your machine โ no telemetry, ever.
JoyCheck also pairs the tester with plain-language guides on stick drift, deadzones, calibration, and controller repair, so once the numbers show a problem you know exactly what to do next.
Built by Taimoor Bamazai, founder of Elites Algorithm Limited.
A startup from Dublin, Ireland that is founded by Taimoor Bamazai.
Stick drift detection
Reads live analog stick X/Y values to spot drift in about 30 seconds
Full input test
Buttons, triggers, analog sticks, D-pad, and vibration motors in one pass
Vibration and haptics test
Fires the rumble motors with five preset patterns to confirm both sides respond
Deadzone visualization
Shows resting offset and response curve for each stick
Privacy-first, no install
Runs entirely in the browser via the W3C Gamepad API; no signup, no telemetry
JoyCheck (Gamepad tester) reads your controller through the W3C Gamepad API and shows the raw input value on every animation frame, with no smoothing or averaging applied on top. It runs entirely client-side, so nothing you do leaves your browser. No install, no account, no telemetry. It reads stick-drift severity in about 30 seconds and covers buttons, sticks, triggers, and vibration in a single pass.
Most controller testers make you install software, create an account, or run your inputs through a server. JoyCheck does none of that. It is free, works in any modern browser on any controller the Gamepad API recognizes, and keeps your data on your own machine. It also pairs the tester with plain-language guides on drift, deadzones, calibration, and repair, so you can act on what the numbers tell you.
Gamers troubleshooting a controller they suspect is drifting or faulty, hardware reviewers measuring stick behavior, and anyone who wants a quick, no-install way to confirm that every button, stick, trigger, and motor works before or after a repair.
JoyCheck was built by Taimoor Bamazai, founder of Elites Algorithm Limited, out of frustration that every gamepad tester either bundled ads, required an install, or sent controller data to a server. The goal was a fast, privacy-first tool that reads the controller directly in the browser and tells you the truth about your hardware in under a minute.
JoyCheck is built on the W3C Gamepad API, including the Gamepad Extensions haptics interface for vibration. The site is a static, dependency-free build made with Astro, and all controller reading happens client-side in vanilla JavaScript with no backend processing of your input.
I don't have verified information about JoyCheck (joycheck.io) in my knowledge base, so I can't confirm its quality, legitimacy, or performance with confidence.
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