COMO CONVERTER IMAGEM

picture1.picture = LoadPicture("C:    este.[txt-color=#0000ff]BMP[/txt-color]")

SavePicture Picture1, "C:    estefinal.[txt-color=#ff0000]JPG[/txt-color]"

'GRAVAR IMAGEM COMO JPEG
Public Type GUID
   Data1 As Long
   Data2 As Integer
   Data3 As Integer
   Data4(0 To 7) As Byte
End Type

Public Type GdiplusStartupInput
   GdiplusVersion As Long
   DebugEventCallback As Long
   SuppressBackgroundThread As Long
   SuppressExternalCodecs As Long
End Type

Public Type EncoderParameter
   GUID As GUID
   NumberOfValues As Long
   type As Long
   Value As Long
End Type

Public Type EncoderParameters
   Count As Long
   Parameter As EncoderParameter
End Type

Public Declare Function GdiplusStartup Lib "GDIPlus" (token As Long, inputbuf As GdiplusStartupInput, Optional ByVal outputbuf As Long = 0) As Long
Public Declare Function GdiplusShutdown Lib "GDIPlus" (ByVal token As Long) As Long
Public Declare Function GdipCreateBitmapFromHBITMAP Lib "GDIPlus" (ByVal hbm As Long, ByVal hpal As Long, Bitmap As Long) As Long
Public Declare Function GdipDisposeImage Lib "GDIPlus" (ByVal Image As Long) As Long
Public Declare Function GdipSaveImageToFile Lib "GDIPlus" (ByVal Image As Long, ByVal filename As Long, clsidEncoder As GUID, encoderParams As Any) As Long
Public Declare Function CLSIDFromString Lib "ole32" (ByVal str As Long, id As GUID) As Long
Public Function SaveJPG(ByVal pict As StdPicture, ByVal filename As String, Optional ByVal quality As Byte = 80) As Long
Dim tSI As GdiplusStartupInput
Dim lRes As Long
Dim lGDIP As Long
Dim lBitmap As Long

   tSI.GdiplusVersion = 1
   lRes = GdiplusStartup(lGDIP, tSI)
  
   If lRes = 0 Then
      lRes = GdipCreateBitmapFromHBITMAP(pict.Handle, 0, lBitmap)
  
      If lRes = 0 Then
         Dim tJpgEncoder As GUID
         Dim tParams As EncoderParameters
         CLSIDFromString StrPtr("{557CF401-1A04-11D3-9A73-0000F81EF32E}"), tJpgEncoder
         tParams.Count = 1
        
         With tParams.Parameter
            CLSIDFromString StrPtr("{1D5BE4B5-FA4A-452D-9CDD-5DB35105E7EB}"), .GUID
            .NumberOfValues = 1
            .type = 4
            .Value = VarPtr(quality)
         End With
        
         lRes = GdipSaveImageToFile(lBitmap, StrPtr(filename), tJpgEncoder, tParams)
         GdipDisposeImage lBitmap
      End If
      GdiplusShutdown lGDIP
   End If
  
   SaveJPG = lRes
   If lRes Then Err.Raise 98775, "GDI+.SaveJPG", "Não foi possivel gravar imagem, erro nº " & lRes
End Function
 

Private Sub Command1_Click()
SaveJPG Picture1.Picture, "c:\Arquivo.jpg", 100
End Sub