Q:

Converting all files (.jpg to .png) from a directory in Python

I'm trying to convert all files from a directory from .jpg to .png. The name should remain the same, just the format would change.
I've been doing some researches and came to this:
from PIL import Image
import os

directory = r'D:\PATH'

for filename in os.listdir(directory):
    if filename.endswith(".jpg"):
        im = Image.open(filename)
        im.save('img11.png')
        print(os.path.join(directory, filename))
        continue
    else:
        continue

I was expecting the loop to go through all my .jpg files and convert them to .png files. So far I was doing only with 1 name: 'img11.png', I haven't succed to build something able to write the adequate names.
The print(os.path.join(directory, filename)) works, it prints all my files but concerning the converting part, it only works for 1 file.
Do you guys have any idea for helping me going through the process?

A:

You can convert the opened image as RGB and then you can save it in any format. 
You can try the following code :
from PIL import Image
import os

directory = r'D:\PATH'
c=1
for filename in os.listdir(directory):
    if filename.endswith(".jpg"):
        im = Image.open(filename)
        name='img'+str(c)+'.png'
        rgb_im = im.convert('RGB')
        rgb_im.save(name)
        c+=1
        print(os.path.join(directory, filename))
        continue
    else:
        continue

