requirements.txt

Django==4.0.5
djangorestframework==3.13.1
Pillow==9.1.1

urls.py

from django.http import HttpResponse
from django.urls import path
from rest_framework.decorators import api_view
from PIL import Image
import io


@api_view(['GET'])
def serve_image(request):
    params = request.query_params

    # http://127.0.0.1:8000/images/?width=200
    width = params.get('width')
    # read image file content
    im = Image.open(r"./original.jpeg")
    # get image format
    image_format = im.format
    # get image content type to response to the client
    mimetype = im.get_format_mimetype()

    # resize if a width parameter is specified
    if width:
        original_width, original_height = im.size
        # to keep the image ratio
        im = im.resize((int(width), int((int(width) * original_height) / original_width)))

    # initialize empty bytes array
    img_byte_arr = io.BytesIO()
    im.save(img_byte_arr, format=image_format)

    return HttpResponse(img_byte_arr.getvalue(), content_type=mimetype)


urlpatterns = [
    path('image/', serve_image),
]