How do you composite an image onto another image with PIL in Python?

This can be accomplished with an Image instance's paste method:

from PIL import Imageimg = Image.open('/path/to/file', 'r')img_w, img_h = img.sizebackground = Image.new('RGBA', (1440, 900), (255, 255, 255, 255))bg_w, bg_h = background.sizeoffset = ((bg_w - img_w) // 2, (bg_h - img_h) // 2)background.paste(img, offset)background.save('out.png')

This and many other PIL tricks can be picked up at Nadia Alramli's PIL Tutorial

Based on unutbus answer:

#!/usr/bin/env pythonfrom PIL import Imageimport mathdef resize_canvas(old_image_path="314.jpg", new_image_path="save.jpg",                  canvas_width=500, canvas_height=500):    """    Place one image on another image.    Resize the canvas of old_image_path and store the new image in    new_image_path. Center the image on the new canvas.    """    im = Image.open(old_image_path)    old_width, old_height = im.size    # Center the image    x1 = int(math.floor((canvas_width - old_width) / 2))    y1 = int(math.floor((canvas_height - old_height) / 2))    mode = im.mode    if len(mode) == 1:  # L, 1        new_background = (255)    if len(mode) == 3:  # RGB        new_background = (255, 255, 255)    if len(mode) == 4:  # RGBA, CMYK        new_background = (255, 255, 255, 255)    newImage = Image.new(mode, (canvas_width, canvas_height), new_background)    newImage.paste(im, (x1, y1, x1 + old_width, y1 + old_height))    newImage.save(new_image_path)resize_canvas()

Remember to use Pillow (Documentation, GitHub, PyPI) instead of python-imaging as Pillow works with Python 2.X and Python 3.X.

This is to do something similar

Where I started was by generating that 'white background' in photoshop and exporting it as a PNG file. Thats where I got im1 (Image 1). Then used the paste function cause it's way easier.

from PIL import Imageim1 = Image.open('image/path/1.png')im2 = Image.open('image/path/2.png')area = (40, 1345, 551, 1625)  im1.paste(im2, area)                   l>(511+40) l>(280+1345)         |    l> From 0 (move, 1345px down)           -> From 0 (top left, move 40 pixels right)

Okay so where did these #'s come from? (40, 1345, 551, 1625) im2.size (511, 280) Because I added 40 right and 1345 down (40, 1345, 511, 280) I must add them to the original image size which = (40, 1345, 551, 1625)

im1.show() 

to show your new image