qrencode − Encode input data in a QR Code and save as a PNG or EPS image.
qrencode [OPTION]... [STRING]
Libqrencode is a library for encoding data in a QR Code symbol, a kind of 2D symbology that can be scanned by handy terminals such as a mobile phone with CCD. The capacity of QR Code is up to 7000 digits or 4000 characters, and has high robustness.
Qrencode is a utility software using libqrencode to encode string data in a QR Code and save as a PNG or EPS image.
−h, −−help
display help message.
−o FILENAME, −−output=FILENAME
write image to FILENAME. If ’−’ is specified, the result will be output to standard output. If −S is given, structured symbols are written to FILENAME-01.png, FILENAME-02.png, ... (suffix is removed from FILENAME, if specified)
−s NUMBER, −−size=NUMBER
specify the size of dot (pixel). (default=3)
−l {LMQH}, −−level={LMQH}
specify error collectin level from L (lowest) to H (highest). (default=L)
−v NUMBER, −−symversion=NUMBER
specify the version of the symbol. See SYMBOL VERSIONS for more information. (default=auto)
−m NUMBER, −−margin=NUMBER
specify the width of margin. (default=4)
−d NUMBER, −−dpi=NUMBER
specify the DPI of the generated PNG. (default=72)
−t {PNG,EPS,SVG,ANSI,ANSI256,ASCII,ASCIIi,UTF8,ANSIUTF8}
−−type={PNG,EPS,SVG,ANSI,ANSI256,ASCII,ASCIIi,UTF8,ANSIUTF8}
specify the type of the generated image. (default=PNG)
−S, −−structured
make structured symbols. Version must be specified.
−k, −−kanji
assume that the input text contains kanji (shift-jis).
−c, −−casesensitive
encode lower-case alphabet characters in 8-bit mode. (default)
−i, −−ignorecase
ignore case distinctions and use only upper-case characters.
−8, −−8bit
encode entire data in 8-bit mode. −k, −c and −i will be ignored.
−M, −−micro
encode in a Micro QR Code. (experimental)
−−foreground=RRGGBB[AA]
−−background=RRGGBB[AA]
specify foreground/background color in hexadecimal notation. 6-digit (RGB) or 8-digit (RGBA) form are supported. Color output support available only in PNG and SVG.
−V, −−version
display the version number and copyrights of the qrencode.
−−verbose
display verbose information to stderr.
[STRING]
input data. If it is not specified, data will be taken from standard input.
The symbol versions of QR Code range from Version 1 to Version 40. Each version has a different module configuration or number of modules, ranging from Version 1 (21 x 21 modules) up to Version 40 (177 x 177 modules). Each higher version number comprises 4 additional modules per side by default. See http://www.qrcode.com/en/about/version.html for a detailed version list.
qrencode −l L −v 1 −o output.png ’Hello, world!’
encode into a symbol version 1, level L.
qrencode −iSv 1 −−output=output.png
read standard input and encode it into a structured-appended symbols in case-insensitive mode.
cat bigfile.txt | qrencode −S −v 40 −l L −o output.png
encode into a symbol version 40, level L.
Written by Kentaro Fukuchi.
Main Web Site: http://fukuchi.org/works/qrencode/
Source code repository: https://github.com/fukuchi/libqrencode/
Copyright (C) 2006-2012 Kentaro Fukuchi.