Apply changes to all the images in given folder – Using Python PIL Last Updated : 21 Nov, 2019 Improve Improve Like Article Like Save Share Report Given a dataset of raw images, which usually need some pre-processing, which one person has to do physically. It is generally a task that requires some repetitive operation to perform for each image. Well, we can easily automate this process using some simple Python code and some libraries with it. So without further adieu, let’s see how to apply changes to all the images in given folder and save it to some destination folder using Python PIL. Let’s install all the required modules – pip3 install pillow pip3 install os-sys We will be parsing all the images in the folder to apply changes/operations to all of them simultaneously. # Code to apply operations on all the images # present in a folder one by one # operations such as rotating, cropping, from PIL import Image from PIL import ImageFilter import os def main(): # path of the folder containing the raw images inPath ="E:\\GeeksforGeeks\\images" # path of the folder that will contain the modified image outPath ="E:\\GeeksforGeeks\\images_rotated" for imagePath in os.listdir(inPath): # imagePath contains name of the image inputPath = os.path.join(inPath, imagePath) # inputPath contains the full directory name img = Image.open(inputPath) fullOutPath = os.path.join(outPath, 'invert_'+imagePath) # fullOutPath contains the path of the output # image that needs to be generated img.rotate(90).save(fullOutPath) print(fullOutPath) # Driver Function if __name__ == '__main__': main() Sample images from the folder – Input :image_sample1 Output :invert_image_sample1 Like Article Suggest improvement Previous Difference between Lossy Compression and Lossless Compression Next How to manipulate the pixel values of an image using Python ? Share your thoughts in the comments Add Your Comment Please Login to comment... Similar Reads Python | OCR on All the Images present in a Folder Simultaneously How to compress images using Python and PIL? Finding Difference between Images using PIL Loading Images in Tkinter using PIL Rename a folder of images using Tkinter How to iterate through images in a folder Python? How to Merge all excel files in a folder using Python? Arithmetic Operations on Images using OpenCV | Set-2 (Bitwise Operations on Binary Images) Python - Move all files from subfolders to main folder Remove all empty files within a folder and subfolders in Python Like A amankrsharma3 Follow Article Tags : Image-Processing Python-pil Machine Learning Operating Systems Programming Language Python Practice Tags : Machine Learningpython