Ruby Requires Chilkat v11.7.0+

Generate a QR Code as SVG

See more QR Code Examples

Demonstrates SVG output. An SVG is a vector image, so it stays sharp at any size, which suits print and responsive web pages. Setting output.format to svg and output.return to text returns the SVG document as a string in outputs[0].text. The SVG can also be written straight to a file with output.path, the same as a PNG. Ruby

require 'chilkat'

success = false

#  This example requires the Chilkat API to have been previously unlocked.
#  See Global Unlock Sample for sample code.

json = Chilkat::CkJsonObject.new()
json.UpdateString("payload.text","https://www.chilkatsoft.com/")
json.UpdateString("output.format","svg")

#  An SVG is text, so it can be returned as text rather than as base64.
json.UpdateString("output.return","text")

fmt = Chilkat::CkFormats.new()
jsonOut = Chilkat::CkJsonObject.new()
success = fmt.QrCode("generate",json,jsonOut)
if (success == false)
    print fmt.lastErrorText() + "\n";
    exit
end

sbSvg = Chilkat::CkStringBuilder.new()
jsonOut.StringOfSb("outputs[0].text",sbSvg)

print "MIME type: " + jsonOut.stringOf("outputs[0].mimeType") + "\n";
print "size: " + jsonOut.IntOf("outputs[0].width").to_s() + " x " + jsonOut.IntOf("outputs[0].height").to_s() + " " + jsonOut.stringOf("outputs[0].units") + "\n";
print "SVG length: " + sbSvg.get_Length().to_s() + " characters" + "\n";

#  The SVG is a complete document that can be saved, or placed inline in an HTML page.
success = sbSvg.WriteFile("qa_output/qr_chilkat.svg","utf-8",false)
if (success == false)
    print sbSvg.lastErrorText() + "\n";
    exit
end

#  The SVG:

#  

#  Sample output:

#  MIME type: image/svg+xml
#  size: 148 x 148 px
#  SVG length: 12500 characters