QuaggaJS is a barcode-scanner entirely written in JavaScript supporting real-time localization and decoding of various types of barcodes such as EAN and CODE128. The library is also configured to use `getUserMedia` to get direct access to the user's camera stream. Even though the code contains some heavy image-processing parts, recent smartphones are capable of locating and decoding barcodes in real-time.
QuaggaJS is a barcode-scanner entirely written in JavaScript supporting real-time localization and decoding of various types of barcodes such as EAN and CODE128. The library is also configured to use `getUserMedia` to get direct access to the user's camera stream. Although the code contains some heavy image-processing parts even recent smartphones are capable of locating and decoding barcodes in real-time.
![teaser][teaser_image]
## Yet another barcode library?
This is not yet another port of the great [zxing][zxing_github] library, but more of an extension to it. This implementation features a barcode locator which is capable of finding a barcode-like pattern in an image resulting in an estimated bounding box including rotation. Simply speaking, this reader is invariant in scale and rotation, whereas other libraries require the barcode to be aligned with the viewport.
## Requirements
In order to take full advantage of quaggaJS, the browser needs to support the `getUserMedia` API which is already implemented by the recent versions of Firefox, Chrome and Opera. The API is also available on their mobile counterparts installed on Android. Safari and IE do not allow the access to the camera yet, neither on desktop, nor on mobile. You can check [caniuse][caniuse_getusermedia] for updates.
Christoph Oberhofer
11 years ago