resizing all images in a folder using PIL

Question

i'm able to resize each image one at a time,but how can I resize all images in one folder in a similar way? Please help me.

from PIL import Image
from resizeimage import resizeimage
    with open('test-image.jpeg', 'r+b') as f:
        with Image.open(f) as image:
            cover = resizeimage.resize_cover(image, [200, 100])
            cover.save('test-image-cover.jpeg', image.format)

Welcome to StackOverflow. Looks like you've got some code that should do something - can you share an example of the output/error message that you are getting? That would help people to understand your problem. Also, it looks like you are using the `resizeimage` package - can you tell us what that is? There is a function within `PIL` to resize images - have you tried using that? — 4Oh4, Mar 08 '19 at 22:52
Have a look at this question: https://stackoverflow.com/questions/273946/how-do-i-resize-an-image-using-pil-and-maintain-its-aspect-ratio — 4Oh4, Mar 08 '19 at 22:52

Pablo Martinez · Answer 1 · 2019-03-08T23:07:33.160

0

Just iterate over the files in the current directory

import os
from PIL import Image
from resizeimage import resizeimage

base = '/the/path'
for path in os.listdir(base):
    with Image.open(os.path.join(base, path)) as image:
        cover = resizeimage.resize_cover(image, [200, 100])
        cover.save(path, image.format)

edited Mar 08 '19 at 23:07

answered Mar 08 '19 at 22:11

Pablo Martinez

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2
6

But i'm getting this error IOError Traceback (most recent call last) in () ----> 6 with open(path, 'r+b') as f: IOError: [Errno 2] No such file or directory: '14325.jpg' – xxxx Mar 08 '19 at 22:36
PIL Image expects a string instead of a file, I just did a typo there. Edited! – Pablo Martinez Mar 08 '19 at 22:46
i also made that change before, I think there is some other issue Are you able to execute it in a folder of some images?@Pablo martinez? – xxxx Mar 08 '19 at 22:54
Ops, you need to add the path to the open – Pablo Martinez Mar 08 '19 at 23:01
now this error is shown ----> 7 with Image.open(os.join(base, path)) as image: AttributeError: 'module' object has no attribute 'join' – xxxx Mar 08 '19 at 23:07
Ye, its os.path.join, I typed it quick – Pablo Martinez Mar 08 '19 at 23:07

martineau · Answer 2 · 2019-03-09T00:16:10.170

0

Updated: Now uses os.listdir() instead of glob.glob() because of the need generate new file names from the original. Code now saves the resized images in same folder with its original file plus an added suffix.

Note that Image.open() wants a file path passed to it, not an opened file.

import os
from PIL import Image
from resizeimage import resizeimage

img_folder = '/path/to/img_folder'
fileext = '.jpg'
suffix = '_RESIZED'

for img_filename in os.listdir(img_folder):
    filename, ext = os.path.splitext(img_filename)

    if ext == fileext:
        print(filename, ext)
        src_img_filepath = os.path.join(img_folder, img_filename)
        dst_img_filepath = os.path.join(img_folder, filename+suffix, ext)

        with Image.open(src_img_filepath) as image:
            cover = resizeimage.resize_cover(image, [200, 100])
            cover.save(dst_img_filepath, image.format)

edited Mar 09 '19 at 00:16

answered Mar 08 '19 at 22:49

martineau

119,623
25
170
301

i don't know why, but it is giving out only one image as output,not all the images present in my folder – xxxx Mar 08 '19 at 23:03
That could happen if there's only one image file with the `.png` extension in the folder. You could try `*.*` to get all the files in the folder. – martineau Mar 08 '19 at 23:08
I have 30 images and all of them have .jpg extension, even then,I'm getting only one image as output – xxxx Mar 08 '19 at 23:17
The code, which I simply copied from yours, saves all of the resized images to the same output file named `'test-image-cover.jpeg'`. You need to change that—which could be done by adding a prefix or suffix to each one, **or** using the same file name, but save it in a different folder. – martineau Mar 08 '19 at 23:25

resizing all images in a folder using PIL

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