Generate QR Codes With Excel VBA

Objective:

The goal is to generate QR codes dynamically within an Excel spreadsheet using VBA. For this task, we’ll use a free external API called QR Code API (or any other similar API). The idea is to send a URL or text to the API, and the API will return an image (QR code) that can be inserted into the Excel sheet.

Requirements:

1. Excel VBA Environment: You will be working within Excel and using its VBA editor (accessible through Alt + F11).
2. Internet Connection: The API requires an internet connection to fetch the QR code images.
3. Microsoft XML Library: We will need to reference the Microsoft XML, v6.0 (or an equivalent version) to send HTTP requests.

Steps to Set Up VBA for QR Code Generation:

1. Open VBA Editor:
   • Open your Excel workbook.
   • Press Alt + F11 to open the VBA editor.
2. Add References:
   • In the VBA editor, go to Tools > References.
   • Look for Microsoft XML, v6.0 or Microsoft XML, v3.0, and check the box next to it to add the reference.
3. Create the VBA Code: Now, we’ll write a macro to generate QR codes.

VBA Code:

Sub GenerateQRCode()
    Dim url As String
    Dim cell As Range
    Dim qrCodeURL As String
    Dim img As Object
    Dim XMLHTTP As Object
    Dim tempPath As String
    Dim imgFileName As String
    ' Define the range where the QR codes will be placed (adjust as needed)
    Set cell = Range("A1") ' Change to the desired cell or range 
    ' Text/URL to be encoded in the QR code (You can customize it)
    url = "https://www.example.com"  ' You can change this to any dynamic cell value or text
    ' QR Code API URL
    qrCodeURL = "https://api.qrserver.com/v1/create-qr-code/?data=" & url & "&size=150x150"
    ' Set a temporary path to save the QR code image
    tempPath = Environ("TEMP") & "\QRCode.png"   
    ' Create the XMLHTTP object to fetch the QR code
    Set XMLHTTP = CreateObject("MSXML2.XMLHTTP")
    XMLHTTP.Open "GET", qrCodeURL, False
    XMLHTTP.Send  
    ' Save the image to a file
    If XMLHTTP.Status = 200 Then
        ' Save the response as an image file to a temporary location
        Set img = CreateObject("ADODB.Stream")
        img.Type = 1 ' Binary data
        img.Open
        img.Write XMLHTTP.responseBody
        img.SaveToFile tempPath, 2 ' Overwrite if the file exists
        img.Close
    End If
    ' Insert the image into the Excel sheet
    If Dir(tempPath) <> "" Then
        ' Insert the QR Code image at the cell location
        ActiveSheet.Pictures.Insert tempPath
    Else
        MsgBox "Failed to generate QR code"
    End If  
    ' Clean up
    Set XMLHTTP = Nothing
    Set img = Nothing
    Set cell = Nothing
End Sub

Code Breakdown:

• url: This is the text or URL that you want to encode into a QR code. In the code, it is set to « https://www.example.com », but you can dynamically replace this with the content of a specific cell by using Range(« A1 »).Value or any other cell reference.
• qrCodeURL: The base URL for the QR code API, with the url query parameter dynamically appended. This API generates a QR code based on the URL or text provided.
• XMLHTTP: This object is used to send HTTP requests to the API. It retrieves the QR code image from the API and stores it in a temporary path on your computer.
• tempPath: The temporary directory where the QR code image is saved. This uses the Windows environment variable TEMP to dynamically fetch a valid temporary file path.
• ADODB.Stream: This object handles binary data. It writes the response from the API (QR code image) into a binary stream and then saves it as a .png image on the local disk.
• Inserting Image into Excel: The image is inserted into the active sheet using ActiveSheet.Pictures.Insert. The image will be placed where the cell is located (in this case, the image will appear in the worksheet, starting from cell A1).

Running the Code:

1. After inserting the code into a module in the VBA editor, close the editor.
2. In the Excel worksheet, you can run this macro by pressing Alt + F8, selecting GenerateQRCode, and clicking Run.

Modifications:

• Dynamic Text: If you want the QR code to be based on values in a cell, you can modify the url variable to be a reference to a specific cell, such as:
• url = Range(« B1 »).Value ‘ This will take the value in cell B1 and encode it as a QR code.
• Cell Location for QR Code: You can adjust the line Set cell = Range(« A1 ») to specify a different cell if you’d like the QR code to be placed somewhere else on the sheet.

Troubleshooting:

• API Rate Limiting: Some QR code APIs may have usage limitations, so be aware of how many QR codes you can generate in a short period.
• Internet Connection: The code requires an internet connection to communicate with the API. If you don’t have internet access, the QR code will not be generated.
• API Response Status: If the status code from the API isn’t 200 (OK), it may indicate an issue with the API or the request.

Conclusion:

This is a straightforward way to generate QR codes directly within Excel using VBA. By integrating an external API, you can easily encode URLs or text into QR codes without needing additional third-party tools or libraries. This approach also allows for dynamic QR code generation based on your Excel data