I need to find a way to re-size an input raster image (such as jpg) to a specified width/height resolution (given in pixels). It would be great if PyQt while resizing a new image would keep an original image's aspect ratio (so there is no stretching but scaling only). src = '/Users/usrName/Images/originalImage.jpg' (2048x1024) (rectangular image 2:1 ratio) dest= '/Users/usrName/Images/originalImage_thumb.jpg' (64x64) (output image is square 1:1 ratio). POSTED RESULTED FUNC: ...could be used to resize and to convert an image to any format QT supports so far... such as: 'bmp', 'gif', 'jpg', 'jpeg', 'png', 'pbm', 'tiff', 'svg', 'xbm' def resizeImageWithQT(src, dest): pixmap = QtGui.QPixmap(src) pixmap_resized = pixmap.scaled(720, 405, QtCore.Qt.KeepAspectRatio) if not os.path.exists(os.path.dirname(dest)): os.makedirs(os.path.dirname(dest)) pixmap_resized.save(dest) Continue reading...