PowerShell Requires Chilkat v11.7.0+

Generate a QR Code PNG in Memory

See more QR Code Examples

Demonstrates getting a QR code image without writing a file. With no output options the result is a PNG returned as base64 in outputs[0].base64 of the response. The example decodes it into a BinData, which holds the bytes of the PNG to send in an HTTP response, store in a database, attach to an email, or save. PowerShell

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

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

$json = New-Object Chilkat.JsonObject
$json.UpdateString("payload.text","https://www.chilkatsoft.com/")
$json.UpdateInt("render.moduleSize",6)

$fmt = New-Object Chilkat.Formats
$jsonOut = New-Object Chilkat.JsonObject
$success = $fmt.QrCode("generate",$json,$jsonOut)
if ($success -eq $false) {
    $($fmt.LastErrorText)
    exit
}

$("format: " + $jsonOut.StringOf("outputs[0].format"))
$("MIME type: " + $jsonOut.StringOf("outputs[0].mimeType"))
$("image: " + $jsonOut.IntOf("outputs[0].width") + " x " + $jsonOut.IntOf("outputs[0].height") + " pixels")

#  outputs[0].base64 is the PNG file, base64 encoded.
$bdPng = New-Object Chilkat.BinData
$success = $bdPng.AppendEncoded($jsonOut.StringOf("outputs[0].base64"),"base64")
if ($success -eq $false) {
    $($bdPng.LastErrorText)
    exit
}

$("PNG bytes: " + $bdPng.NumBytes)

#  The BinData holds the image.  Here it is simply saved.
$success = $bdPng.WriteFile("qa_output/qr_in_memory.png")
if ($success -eq $false) {
    $($bdPng.LastErrorText)
    exit
}

#  The PNG held in bdPng:

#  

#  Sample output:

#  format: png
#  MIME type: image/png
#  image: 222 x 222 pixels
#  PNG bytes: 877