text: from django.db import models
  from django.dispatch import receiver
  from django.contrib.auth.models import User
  from django.db.models.signals import post_save
  from PIL import Image
  
  
  class Profile(models.Model):
      user = models.OneToOneField(User, on_delete=models.CASCADE)
      image = models.ImageField(default='default.jpg', upload_to='profile_pics')
  
      @receiver(post_save, sender=User)
      def create_user_profile(sender, instance, created, **kwargs):
          if created:
              Profile.objects.create(user=instance)
  
      @receiver(post_save, sender=User)
      def save_user_profile(sender, instance, **kwargs):
          instance.profile.save()
  
      def __str__(self):
          return f'{self.user.username} Profile'
  
      def save(self, *args, **kwargs):
          super(Profile, self).save(*args, **kwargs)
  
          img = Image.open(self.image.path)
  
          if img.height > 300 or img.width > 300:
              output_size = (300, 300)
              img.thumbnail(output_size)
              img.save(self.image.path)
  