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QRENCODE

NAME

qrencode − Encode input data in a QR Code and save as a PNG or EPS image.

SYNOPSIS

qrencode [OPTION]... [STRING]

DESCRIPTION

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.

OPTIONS

−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.

SYMBOL VERSIONS

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.

EXAMPLES

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.

AUTHOR

Written by Kentaro Fukuchi.

RESOURCES

Main Web Site: http://fukuchi.org/works/qrencode/
Source code repository: https://github.com/fukuchi/libqrencode/

COPYRIGHT

Copyright (C) 2006-2012 Kentaro Fukuchi.

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