Python to Convert JPG to PNG and PNG TO JPG with Source Code For Beginners

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These scripts can change the format of images from PNG to JPG and JPG to PNG

Requirements:

Required Modules

pip install pillow //PIL==1.1.6
Code language: JavaScript (javascript)

Run the Script:

  • Dynamic Change Copy the script convertDynamic.py into the directory where images are (PNG and/or JPG). And run:
$ python convertDynamic.py
  • This will convert all JPG images to PNG and PNG images to JPG in the present directory tree recursively (i.e. will change format in images inside sub-directories too.)
  • JPG to PNG (single image)
    1. Copy the JPG image to the directory where JPGtoPNG.py exists
    2. Replace file name naruto_first.jpg inside JPGtoPNG.py (line 3) to input file name (JPG).
    3. Replace file name naruto.png inside JPGtoPNG.py(line 4) to output file name (PNG).
    4. Run following command: $ python JPGtoPNG.py
  • PNG to JPG (single image)
    1. Copy the PNG image in directory where PNGtoJPG.py exists
    2. Replace file name naruto_first.png inside PNGtoJPG.py (line 3) to input file name (PNG).
    3. Replace file name naruto.jpg inside PNGtoJPG.py (line 4) to output file name (JPG).
    4. Run following command: $ python PNGtoJPG.py

Source Code:

convertDynamic.py

from PIL import Image
import sys
import os

try:
  im = None
  for root, dirs, files in os.walk("."):
    for filename in files:
        if filename.endswith('.jpg'):
          im = Image.open(filename).convert("RGB")
          im.save(filename.replace('jpg', 'png'), "png")
        elif filename.endswith('.png'):
          im = Image.open(filename).convert("RGB")
          im.save(filename.replace('png', 'jpg'), "jpeg")
        else:
          print('dont have image to convert')
except IOError:
  print('directory empty!')
  sys.exit()
Code language: PHP (php)

PNGtoJPG.py

from PIL import Image

im = Image.open("naruto_first.png").convert("RGB")
im.save("naruto.jpg", "jpeg")
Code language: JavaScript (javascript)

JPGtoPNG.py

from PIL import Image

im = Image.open("naruto_first.jpg").convert("RGB")
im.save("naruto.png", "png")
Code language: JavaScript (javascript)

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