QR Code Reader

QR Code Reader

Scanning EAN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 39, Codabar, Interleaved 2 of 5 and QR Codes from webcam or image files

  • QR Code Reader
  • QR Code Reader
What is QR Code Reader?
QR Code Reader is an efficient Firefox-based extension that enables scanning of major barcode types including UPC-A, UPC-E, Code 128, Codabar, and more as well as QR codes. Users can easily utilize their webcam for live scanning or upload image files to decode barcodes. The extension stores a history of the most recent 20 items scanned. Leveraging the robust ZBar c-library, it detects multiple QR codes and barcodes in a single frame.
By: Joue
Users: 3,420 ▲ 43
Rating: 4.00 (17)
Version: 0.2.8 (Last updated: 2024-05-23)
Creation date: 2020-01-30
Weekly download count: 121
Firefox on Android: No
Risk impact: Very low risk impact
Risk likelihood: Moderate risk likelihood
Manifest version: 2
  • storage
  • contextMenus
Size: 263.51K
URLs: Website
Stats date:

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A powerful QR and bar code scanner that supports EAN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 39, Codabar, Interleaved 2 of 5, and QR Code symbologies (types of bar codes). The extension supports scanning from the camera and use local images and keeps the history of the last 20 scanned items. This extension does not rely on any external services to perform detection. There is no server-side interaction whatsoever. Also, note that you can drop local image files to the user interface of the extension to detect the code.


  1. Read multiple QR codes on one image.
  2. Supports multiple protocols
  3. Saves the history of scanned items

This extension uses ZBar c-library, which is capable of detecting multiple QR codes and bar codes in a single frame.

What is a QR code? A QR code (abbreviated from Quick Response code) is a type of matrix barcode (or two-dimensional barcode) first designed in 1994 for the automotive industry in Japan. A barcode is a machine-readable optical label that contains information about the item to which it is attached A QR code uses four standardized encoding modes (numeric, alphanumeric, byte/binary, and kanji) to store data efficiently.

What is a barcode? A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths and spacings of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called barcode readers, of which there are several types. Later, two-dimensional (2D) variants were developed, using rectangles, dots, hexagons, and other geometric patterns, called matrix codes or 2D barcodes, although they do not use bars as such.

User reviews
This is an excellent extension. Worked right out of the box. I added its button to the toolbar menu so now it opens with a click in its own browser window. I just drag and drop a png file i created with a QR code, it reads it and displays it or executes the code in it. Easy as pie! No crazy adds or malicious things. My hat is off to the creator and I would recommend it to anyone!
by Andy, 2024-02-20
View all user reviews
Risk impact

QR Code Reader is safe to use. It does not request any sensitive permissions.

Risk likelihood

QR Code Reader is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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