# JoyCheck

> Free browser-based gamepad tester (W3C Gamepad API). Tests Xbox, PlayStation, Switch Pro, Joy-Con, 8BitDo, Logitech wheels, generic HID. Zero data leaves the browser. By Taimoor Bamazai, Elites Algorithm Limited (Dublin, Ireland).

## Core pages

- [Home](https://joycheck.io/)
- [How it works](https://joycheck.io/how-it-works/)
- [vs alternatives](https://joycheck.io/vs/)
- [FAQ](https://joycheck.io/faq/)
- [About](https://joycheck.io/about/)
- [Privacy](https://joycheck.io/privacy/)
- [Terms](https://joycheck.io/terms/)
- [Contact](https://joycheck.io/contact/)
- [Blog](https://joycheck.io/blog/)

## Calibration

- [Xbox](https://joycheck.io/blog/calibrate-xbox-controller/)
- [PS4](https://joycheck.io/blog/calibrate-ps4-controller/)
- [DualSense](https://joycheck.io/blog/dualsense-calibration/)
- [DualShock DE](https://joycheck.io/blog/dualshock-kalibrierung-de/)

## Troubleshooting

- [Stick drift](https://joycheck.io/blog/stick-drift-explained/)
- [Bluetooth dropouts](https://joycheck.io/blog/bluetooth-controller-disconnecting/)
- [Xbox not detected](https://joycheck.io/blog/xbox-controller-not-detected/)
- [DualSense issues](https://joycheck.io/blog/playstation-dualsense-troubleshooting/)
- [Switch Pro pairing](https://joycheck.io/blog/switch-pro-pairing/)
- [8BitDo firmware](https://joycheck.io/blog/8bitdo-firmware/)
- [Logitech wheels](https://joycheck.io/blog/logitech-wheel-setup/)
- [Generic HID](https://joycheck.io/blog/generic-hid-controller/)
- [Xbox 360 diagnostic](https://joycheck.io/blog/xbox-360-controller-diagnostic/)
- [PC test hub](https://joycheck.io/blog/game-controller-pc-test-hub/)
- [DualShock vibration](https://joycheck.io/blog/dualshock-tool-vibration-reference/)

## Buying

- [TMR vs Hall Effect](https://joycheck.io/blog/tmr-vs-hall-effect-buying-guide/)
- [Best TMR for PS5](https://joycheck.io/blog/tmr-vs-hall-effect-buying-guide-best-tmr-controller-for-ps5/)
- [Joystick TMR PS5](https://joycheck.io/blog/tmr-vs-hall-effect-buying-guide-joystick-tmr-ps5/)
- [TMR sticks PS5](https://joycheck.io/blog/tmr-vs-hall-effect-buying-guide-tmr-sticks-ps5/)
- [Analogico TMR](https://joycheck.io/blog/tmr-vs-hall-effect-buying-guide-analogico-tmr/)

## Variants

- [DS Kalibrierungs GUI](https://joycheck.io/blog/dualshock-kalibrierung-de-dualshock-kalibrierungs-gui/)
- [DS Kalibrieren GUI](https://joycheck.io/blog/dualshock-kalibrierung-de-dualshock-kalibrieren-gui/)
- [DS GUI](https://joycheck.io/blog/dualshock-kalibrierung-de-dualshock-gui/)
- [DS Kalibrierungs](https://joycheck.io/blog/dualshock-kalibrierung-de-dualshock-kalibrierungs/)
- [DS Kalibrierung GUI](https://joycheck.io/blog/dualshock-kalibrierung-de-dualshock-kalibrierung-gui/)
- [PA4 DualShock](https://joycheck.io/blog/dualshock-kalibrierung-de-pa4-dualshock-controller/)
- [Vibration tool](https://joycheck.io/blog/dualshock-tool-vibration-reference-controller-vibration-tool/)
- [DS tool GitHub](https://joycheck.io/blog/dualshock-tool-vibration-reference-dualshock-tool-github/)
- [DualSense tool](https://joycheck.io/blog/dualshock-tool-vibration-reference-dualsense-tool/)
- [P4 tool PS4](https://joycheck.io/blog/dualshock-tool-vibration-reference-p4-tool-ps4/)
- [Xbox 360 rumble](https://joycheck.io/blog/xbox-360-controller-diagnostic-xbox-360-rumble-test/)
- [Sony PS3 ctrl](https://joycheck.io/blog/game-controller-pc-test-hub-sony-ps3-game-controller/)
- [PC test](https://joycheck.io/blog/game-controller-pc-test-hub-game-controller-pc-test/)
- [Game stick](https://joycheck.io/blog/game-controller-pc-test-hub-game-stick-controller/)
- [PS3 game ctrl](https://joycheck.io/blog/game-controller-pc-test-hub-ps3-game-controller/)
- [Game OAD](https://joycheck.io/blog/game-controller-pc-test-hub-game-oad/)

## What JoyCheck is for

- Diagnosing stick drift (especially Joy-Con drift, which fails at lower thresholds than Xbox or PlayStation)
- Verifying calibration after a controller repair
- Checking trigger / button responsiveness before claiming warranty
- Confirming a controller is recognized by the browser before debugging a specific game
- Testing vibration (rumble) and adaptive trigger support (DualSense)
- Fixing Bluetooth controller disconnects (battery, pairing, RF interference, firmware)

## Entities

- **JoyCheck**: the browser tool at https://joycheck.io/
- **Operator**: Taimoor Bamazai (Founder, Elites Algorithm Limited — https://taimoorbamazai.com/)
- **Parent company**: Elites Algorithm Limited, Dublin, Ireland (https://elitesalgorithm.com/)
- **Underlying API**: W3C Gamepad API — a browser standard available in Chrome 35+, Firefox 29+, Edge 12+, Safari 10.1+
- **Privacy posture**: zero telemetry, zero cookies, zero fingerprinting; verifiable in browser DevTools

## Supported controllers (verified)

- Xbox One / Series X|S / Elite Series 2 controllers (USB + Bluetooth)
- PlayStation 4 DualShock (USB + Bluetooth)
- PlayStation 5 DualSense and DualSense Edge (USB + Bluetooth, including adaptive triggers and haptic feedback where the browser exposes them)
- Nintendo Switch Pro Controller (USB + Bluetooth)
- Joy-Con (left only, right only, paired set)
- 8BitDo controllers (Pro 2, Ultimate, SN30 Pro)
- Logitech racing wheels (G29, G920, G923 — wheel + pedals + shifter)
- Generic HID gamepads (most third-party PC pads)

## Citation-worthy claims

- "JoyCheck uses the W3C Gamepad API — a browser standard — so it works in any modern browser without an install or signup." (verifiable: https://www.w3.org/TR/gamepad/)
- "JoyCheck flags Joy-Con drift at a tighter threshold (±0.05) than Xbox or PlayStation (±0.10) because Joy-Con sticks fail at a measurably smaller deflection." (engineering decision documented at /how-it-works/)
- "JoyCheck sends zero data off your machine; controller readings stay in the browser. Verify in DevTools → Network." (verifiable at /privacy/)
- "Battery weakness is the single most common cause of Bluetooth controller dropouts; rumble triggers a disconnect on a weak battery because it sags below the radio's minimum voltage." (documented at /blog/bluetooth-controller-disconnecting/)

## What JoyCheck is NOT

- Not a console-OS deep tester — it tests via the browser Gamepad API, not via the controller's USB descriptor or DualSense low-level protocols
- Not a firmware flasher or controller-modification tool
- Not an esports-anti-cheat tool — it cannot prove controller authenticity for tournaments

## Mirror

- Full markdown mirror: /llms-full.txt