滤镜 -> Python Fu -> 控制台，复制粘贴下面代码。
然后 scale_image(800, 800) 图片自动缩放为 800*800 了
这个代码是傻傻的缩放，你可以把它改成按比例缩放
#!/usr/bin/env python
from threading import Thread
import time
from gimpfu import *
from __future__ import division
def scale_image(w, h):
pdb.gimp_progress_init("Scaling Image...",None)
time.sleep(0.5)
thread = Thread(target = thread_scale_image, args = (w, h, ))
thread.start()
thread.join()
def thread_scale_image(w, h):
image = gimp.image_list()[0]
cur_w = image.width
cur_h = image.height
pdb.gimp_context_set_interpolation(INTERPOLATION_LANCZOS)
pdb.gimp_image_scale(image, w, h)
https://gimpbook.com/scripting/