Tethr

A JavaScript/TypeScript library for controlling cameras

Guide Capability Report API

Unified camera control

One API for PTP-over-USB cameras and webcams, with capability-based vendor detection.

Liveview & capture

Start a liveview MediaStream, run autofocus, and take photos straight from the browser.

Object Store

Browse, download, and stream files on the camera's storage with chunked transfer.

Tethr is a JavaScript/TypeScript library for controlling digital cameras from the browser over WebUSB (PTP) and WebRTC (webcam).

import {TethrManager} from 'tethr'

const manager = new TethrManager()
const camera = await manager.requestCamera('ptpusb')
await camera.open()

await camera.set('shutterSpeed', '1/30')
const result = await camera.takePhoto()

See the Capability Report to probe everything a connected camera can do, or the Playground for a hands-on demo.