How to scale pictures in bulk with python3

First, we have to make sure we have the Pillow library installed. Open the command terminal, and type python, when we have the interpreter running, we type:-

from PIL import Image

If all goes well, we will get the out put of >>>, otherwise, we have to install pillow by type:

Pip install Pillow

Once we have Pillow readay, we could use the image.resize method to scale images.

from PIL import Image

import os.path

import glob

def convertjpg(jpgfile,outdir):

    img=Image.open(jpgfile)

    w,h = img.size

    if w>h: #decide the size by which is the smaller one, width or hight

        height=2013

        width = int(height/h*w)#calculation

    else:

        width =2013

        height = int(width/w*h)

    try:

        new_img=img.resize((width,height),Image.BILINEAR)   

        new_img.save(os.path.join(outdir,os.path.basename(jpgfile)))

    except Exception as e:

        print(e)

for jpgfile in glob.glob("F:\\Original\\*.jpg"):

    convertjpg(jpgfile,"F:\\Scaling\\ResizeOne")

    

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