Go 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. Go

    success := false

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

    json := chilkat.NewJsonObject()
    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.NewFormats()
    jsonOut := chilkat.NewJsonObject()
    success = fmt.QrCode("generate",json,jsonOut)
    if success == false {
        fmt.Println(fmt.LastErrorText())
        json.DisposeJsonObject()
        fmt.DisposeFormats()
        jsonOut.DisposeJsonObject()
        return
    }

    sbSvg := chilkat.NewStringBuilder()
    jsonOut.StringOfSb("outputs[0].text",sbSvg)

    fmt.Println("MIME type: ", *jsonOut.StringOf("outputs[0].mimeType"))
    fmt.Println("size: ", jsonOut.IntOf("outputs[0].width"), " x ", jsonOut.IntOf("outputs[0].height"), " ", *jsonOut.StringOf("outputs[0].units"))
    fmt.Println("SVG length: ", sbSvg.Length(), " characters")

    //  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 {
        fmt.Println(sbSvg.LastErrorText())
        json.DisposeJsonObject()
        fmt.DisposeFormats()
        jsonOut.DisposeJsonObject()
        sbSvg.DisposeStringBuilder()
        return
    }

    //  The SVG:

    //  

    //  Sample output:

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

    json.DisposeJsonObject()
    fmt.DisposeFormats()
    jsonOut.DisposeJsonObject()
    sbSvg.DisposeStringBuilder()