Python script to resize an image while keeping the original aspect ratio.

resize-image-keep-aspect-ratio.py

#Resizes an image and keeps aspect ratio. Set mywidth to the desired with in pixels.

import PIL
from PIL import Image

mywidth = 300

img = Image.open('someimage.jpg')
wpercent = (mywidth/float(img.size[0]))
hsize = int((float(img.size[1])*float(wpercent)))
img = img.resize((mywidth,hsize), PIL.Image.ANTIALIAS)
img.save('resized.jpg')

Exactly what I was looking for. Thanks mate @tomvon

thank you!

Thanks!

helped a lot!

Hey does this conversion lead to lossy coversion? or loss less?

Hi @aruna09 ! Good question. I wrote that script many years ago and haven't actually used PIL (now Pillow) lately. I would recommend checking the latest docs https://pillow.readthedocs.io/en/stable/handbook/image-file-formats.html. I know for JPEG images you can set the compression level from 0 (fast, lossy) to 100 (slower, lossless?).

Thanks, code helped a lot !!

thank you

thanks

Thanks for the code but ANTIALIAS is deprecated for 3.11 version of python. I have used Image.LANCZOS instead but quality is compromised. Can you please help?

It is reducing the colors. Which I don't want, that'swhy trying to find something which reduces the size but will not change the quality.
Original Size 31MB
After Size 4.55MB
Sorry, I can't upload the images here also because Github also not allowing me to upload file size above 10MB.

Alternatively, I want a code that should reduce the size 'just below 10MB'.

Thanks for the code but ANTIALIAS is deprecated for 3.11 version of python. I have used Image.LANCZOS instead but quality is compromised. Can you please help?

Yes Bro, same problem. What to do? I too don't understand.