Life & fun · November 25, 2014
QuaggaJS, a barcode scanner written in JavaScript
QuaggaJS is an advanced barcode-reader written in JavaScript
QuaggaJS, a barcode scanner written in JavaScript launched on November 25, 2014 with 168 votes, #103 of 1,965 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 11 years on.
In plain words
QuaggaJS is a JavaScript library that scans and decodes barcodes in real time. It supports multiple barcode formats including EAN, CODE 128, CODE 39, UPC-A, and others. The tool accesses users' camera streams directly and performs barcode localization and decoding through image processing, running efficiently enough on smartphones. It is designed for developers who need to add barcode scanning functionality to web applications.
written from the facts on this page · September 2026
From the sources
QuaggaJS is a barcode-scanner entirely written in JavaScript supporting real- time localization and decoding of various types of barcodes such as EAN , CODE 128 , CODE 39 , EAN 8 , UPC-A , UPC-C , I2of5 , 2of5 , CODE 93 and CODABAR . The library is also capable of using getUserMedia to get direct access to the user’s camera stream. Although the code relies on heavy image-processing even recent smartphones are capable of locating and decoding barcodes in real-time. Try some examples and check out the blog post ( How barcode-localization works in QuaggaJS ) if you want to dive deeper into this topic. This is not yet another port of the great zxing library, but more of an extension to it. This…from serratus.github.io
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