Try this. You are almost there. No need for .Select
Sub Mapit()
Dim URL As String
URL = "https://www.google.com/images/srpr/logo9w.png"
ActiveSheet.Pictures.Insert (URL)
End Sub
Private Sub Mapit()
Dim URL As String
URL = Sheets("sheet1").Cells(1, 1)
ThisWorkbook.Activate
ThisWorkbook.Sheets("sheet1").Select
Sheets("sheet1").Pictures.Insert (URL)
End Sub
Updated after comments :
Insert Userform > Goto toolbox > Additional COntrols > Select Microsoft Web Browser > OK
Drag the control to userform
Now on userform paste below code
Private Sub UserForm_Initialize()
Me.WebBrowser1.Navigate ("www.google.com")
End Sub