Web serialLimited availability

The navigator.serial API communicates with devices over serial ports, such as microcontrollers.

Not yet supported in all major browsers — check the table and provide a fallback.

Browser support

DesktopChrome

1–88Not supported

89+Supportedsince Mar 2, 2021

Current: 155

Edge

12–88Not supported

89+Supportedsince Mar 4, 2021

Current: 154

Firefox

1–150Not supported

151+Supportedsince May 19, 2026

Current: 157

Safari

✕Not supportedup to 27

Current: 27

MobileChrome Android

18–147Not supported

148+Supportedsince May 5, 2026

Current: 155

Firefox Android

✕Not supportedup to 157

Current: 157

Safari iOS

✕Not supportedup to 27

Current: 27

Not supported in Safari, Firefox Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.

Full syntax and examples are on MDN: serial.

JS · check before using

if ("Serial" in globalThis) {
  // Serial is available
} else {
  // load a polyfill or use a fallback
}

Support for each part of the feature (24). The overall table above shows when the whole feature works.

Sub-feature	Chrome	Edge	Firefox	Safari	Chrome Android	Firefox Android	Safari iOS
Navigator.serial	89	89	151	✕	148	✕	✕
Serial	89	89	151	✕	148	✕	✕
Serial.getPorts	89	89	151	✕	148	✕	✕
Serial.requestPort	89	89	151	✕	148	✕	✕
Serial.requestPort.allowedBluetoothServiceClassIds_option	117	117	✕	✕	148	✕	✕
Serial.requestPort.filters_bluetoothServiceClassId	117	117	✕	✕	148	✕	✕
SerialPort	89	89	151	✕	148	✕	✕
SerialPort.close	89	89	151	✕	148	✕	✕
SerialPort.connect_event	89	89	151	✕	148	✕	✕
SerialPort.connect_event.bluetooth_rfcomm	130	130	✕	✕	148	✕	✕
SerialPort.connected	130	130	151	✕	148	✕	✕
SerialPort.disconnect_event	89	89	151	✕	148	✕	✕
SerialPort.disconnect_event.bluetooth_rfcomm	130	130	✕	✕	148	✕	✕
SerialPort.forget	103	103	151	✕	148	✕	✕
SerialPort.getInfo	89	89	151	✕	148	✕	✕
SerialPort.getInfo.bluetoothServiceClassId	117	117	✕	✕	148	✕	✕
SerialPort.getSignals	89	89	151	✕	148	✕	✕
SerialPort.open	89	89	151	✕	148	✕	✕
SerialPort.readable	89	89	151	✕	148	✕	✕
SerialPort.setSignals	89	89	151	✕	148	✕	✕

Show 4 more

Sub-feature	Chrome	Edge	Firefox	Safari	Chrome Android	Firefox Android	Safari iOS
SerialPort.writable	89	89	151	✕	148	✕	✕
WorkerNavigator.serial	89	89	151	✕	148	✕	✕
iframe.allow.serial	89	89	151	✕	89	✕	✕
http.headers.Permissions-Policy.serial	89	89	✕	✕	89	✕	✕