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Android & Firmware • Fastboot API Tester

WebUSB & Fastboot API Tester – Browser Hardware Check

Checks whether your browser supports direct USB/COM port hardware connections required for in-browser Fastboot and EDL flashing.

100% Client-Side Privacy Universal Hardware Compatibility Zero Server Data Upload Instant Execution • No Install
100% Client-SideExecution Mode
HTML5 • WebAPICore Engine
Zero Data StoredUser Privacy
Free • No InstallAccess Tier

WebUSB & WebSerial Hardware API Tester

Android & Firmware

Checks whether your browser supports direct USB/COM port hardware connections required for in-browser Fastboot and EDL flashing.

WebUSB (Fastboot & ADB):—
WebSerial (EDL & BROM COM):—
WebHID (Hardware Devices):—
Web Bluetooth:—
Click above to test pairing phone in Fastboot/ADB mode.
Supported Android USB Vendor IDs:
Google (0x18D1) Qualcomm (0x05C6) MediaTek (0x0E8D) Samsung (0x04E8) Xiaomi (0x2717)
Quick Actions Ready
Browser Requirement: Chromium-based browsers (Google Chrome, Microsoft Edge, Brave, Opera) support WebUSB and WebSerial. Mozilla Firefox and Safari intentionally disable these APIs due to security policies.

Frequently Asked Questions

What is the WebUSB API in modern web browsers?

WebUSB allows authorized web applications to communicate directly with USB hardware peripherals without requiring platform-specific drivers, enabling in-browser Android Fastboot and ADB flashing.

Why does WebUSB require HTTPS?

Because WebUSB provides direct raw USB hardware access, the W3C security model mandates that it can only execute on secure HTTPS origins and requires explicit user consent via browser dialogs.

Which Android flashing tools utilize WebUSB?

Google Android Flash Tool (flash.android.com), ChromeOS recovery utilities, and web-based unbrick flashtools use WebUSB to flash bootloader, recovery, and system images directly from Chrome or Edge.

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