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go-qrcode
Tom Harwood cf115fc637 Add Travis CI config file. 11 anni fa
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qrcode.go 3484a698f5 Switch to github import paths. 11 anni fa
qrcode_decode_test.go 4d19c4c411 Fix symbols consisting of a single block not having their remainder bits applied. 12 anni fa
qrcode_test.go f7be08535c Test data type optimisation close to the maximum encodable limit of 2953 bytes. 12 anni fa
regular_symbol.go 3484a698f5 Switch to github import paths. 11 anni fa
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symbol_test.go 4802c0ec0c golint fixes 12 anni fa
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README.md

go-qrcode

Package qrcode implements a QR Code encoder.

A QR Code is a matrix (two-dimensional) barcode. Arbitrary content may be encoded, with URLs being a popular choice :)

Each QR Code contains error recovery information to aid reading damaged or obscured codes. There are four levels of error recovery: Low, medium, high and highest. QR Codes with a higher recovery level are more robust to damage, at the cost of being physically larger.

Usage

import qrcode "skip.org/go/qrcode"

  • Create a PNG image:
    var png []byte
png, err := qrcode.Encode("https://example.org", qrcode.Medium, 256)
  • Create a PNG image and write to a file: 
    err := qrcode.WriteFile("https://example.org", qrcode.Medium, 256, "qr.png")

Both examples use the qrcode.Medium error Recovery Level and create a 256x256 pixel, black on white QR Code.

The maximum capacity of a QR Code varies according to the content encoded and
the error recovery level. The maximum capacity is 2,953 bytes, 4,296
alphanumeric characters, 7,089 numeric digits, or a combination of these.

Documentation

Demoapp

http://go-qrcode.appspot.com

Links