小编nlh*_*hma的帖子

我想使用魔杖调整大小并优化png和jpg图像大小.

使用PIL,如果指定优化选项,我可以以大约3倍的大小保存相同的图像.

with open(filename, 'rb') as f:
    pimage = PImage.open(f)
    resized_pimage = pimage.resize((scaled_width, scaled_height), PImage.ANTIALIAS)            bytes_buffer = io.BytesIO()
    resized_pimage.save(bytes_buffer, format="PNG", optimize=True)

但是,我不确定Wand的等效选项是什么:

with default_storage.open(filename, 'rb') as f:
    img = WImage(file=f)
    img.resize(width=scaled_width, height=scaled_height, filter='gaussian')
    with WImage(width=scaled_width, height=scaled_height) as png:
        png.composite(img, top=0, left=0)
        png.format = 'png'
        bytes_buffer = io.BytesIO()
        png.save(file=bytes_buffer)

我读了关于ImageMagic图像优化几篇文章(例如http://www.smashingmagazine.com/2015/06/efficient-image-resizing-with-imagemagick/),但我怎么能在棒做这些(不是很明显我是Wand或PIL的完全新手.

任何帮助/指针将不胜感激.