Master Pillow: 6 Essential Modules for Powerful Image Manipulation in Python

Introduction

Pillow is a powerful Python imaging library that succeeded PIL and now dominates image handling tasks.

Six Core Modules

Image – loading, saving, inspecting image format, mode, size, and basic operations such as verify, show, and save.

ImageDraw – drawing points, lines, arcs, ellipses, chords, pieslices, polygons, rectangles, and adding text or watermarks.

ImageEnhance – adjusting color balance, contrast, brightness, and sharpness.

ImageFont – loading TrueType fonts and rendering text onto images.

ImageGrab – capturing screenshots or specific screen regions.

ImageFilter – applying filters such as Gaussian blur, blur, edge enhance, find edges, emboss, contour, sharpen, smooth, and detail.

Code Samples

from PIL import Image
from io import BytesIO
# read an image
im = Image.open('2.jpg')
b = BytesIO()
im.save(b, 'JPEG')
data = b.getvalue()
print(data)  # binary data
print('Format:', im.format)
print('Mode:', im.mode)
print('Size:', im.size)
print('Info:', im.info)
im.verify()
im.show()
im.save('4.jpg', 'JPEG')

# ImageDraw example
from PIL import Image, ImageDraw
im = Image.open('2.jpg')
draw = ImageDraw.Draw(im)
draw.point([100, 200], fill='blue')
draw.line([100, 100, 600, 100], fill='green')
# ... more drawing commands ...

# ImageEnhance example
from PIL import ImageEnhance
im1 = Image.open('4.jpg')
enhancer = ImageEnhance.Contrast(im1)
im2 = enhancer.enhance(3.4)
im2.show()

# ImageFont example
from PIL import ImageFont, ImageDraw
font = ImageFont.truetype(r'C:\Windows\Fonts\simsun.ttc', size=40)
ImageDraw.Draw(im).text((50, 60), 'Hello World', fill='red', font=font)

# ImageGrab example
from PIL import ImageGrab
im1 = ImageGrab.grab((0, 0, 800, 200))
im1.show()

# ImageFilter example
from PIL import ImageFilter
im = Image.open('4.jpg')
im_blur = im.filter(ImageFilter.GaussianBlur)
im_blur.show()
# ... other filters ...

These snippets demonstrate creating new images, blending, point operations, cropping, pasting, channel splitting/merging, resizing, flipping, pixel access, thumbnail generation, rotation, mode conversion, drawing shapes, adding text, screen capture, and applying various filters.

With Pillow you can easily perform screenshot capture, watermarking, and even generate ASCII‑style images.