QRLogo is a small library and command line to generate QR images with small logo placed in the center.
Thanks to redundancy in the QE codes nature, code remains readable even if part of its covered by image, i.e. logo. It allows to create nice branded-like QR codes.
To install command line tool:
go get github.com/akihito-okada/qrlogo/cmd/qrlogo
Or only lib (basically, the same, but without installing binary):
go get github.com/akihito-okada/qrlogo
For command line tool, it's enough to specify input image (i.e. logo) and text or URL to be encoded:
qrlogo -i logo.png http://githib.com/akihito-okada/qrlogo
Output will be written to qr.png file in PNG format.
You can also specify output filename and image size (512px by default). See -help output for details.
Note, that resizing logo image is up to you, it will be placed on top of resulting QR code without resizing or guessing proportions.
For the library, usually it's enough to call only qrlogo.Encode() function, but if you need more precise controls, create new qrlogo.Encoder and set the values you need. See Documentation for more details.
MIT