QRENCODE
Section: User Commands (1)
Updated: Sep. 21, 2017
Page Index
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)
- -r FILENAME, --read-from=FILENAME
-
read input data from FILENAME.
- -s NUMBER, --size=NUMBER
-
specify the size of dot (pixel). (default=3)
- -l {LMQH}, --level={LMQH}
-
specify error correction level from L (lowest) to H (highest). (default=L)
- -v NUMBER, --symversion=NUMBER
-
specify the minimum 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,PNG32,EPS,SVG,XPM,ANSI,ANSI256,ASCII,ASCIIi,UTF8,ANSIUTF8}
-
-
--type={PNG,PNG32,EPS,SVG,XPM,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, EPS 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.
- qrencode -S -v 40 -l L -r bigfile.txt -o output.png
-
read input data from bigfile.txt and encode into a symbol version 40, level L.
AUTHOR
Written by Kentaro Fukuchi.
RESOURCES
- Main Web Site: https://fukuchi.org/works/qrencode/
-
- Source code repository: https://github.com/fukuchi/libqrencode/
-
COPYRIGHT
Copyright (C) 2006-2017 Kentaro Fukuchi.