uses jpeg;
procedure ZipJPEG;
var
  jpg: TJpegImage;
  bmp: TBitmap;
begin
  jpg := TJpegImage.Create;
  bmp := TBitmap.Create;
  try
    jpg.LoadFromFile('c:\A.jpg',',',');
    bmp.Width := jpg.Width;
    bmp.Height := jpg.Height;
    bmp.Canvas.StretchDraw(bmp.Canvas.ClipRect, jpg,',',');
    jpg.Assign(bmp,',',');
    jpg.CompressionQuality := 10;
    jpg.Compress;
    jpg.SaveToFile('C:\AA.jpg',',',');
  finally
    bmp.free;
    jpg.free;
  end;
end;
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