Python Imaging Library-(PIL) Examples

The PIL(Python Imaging Library) is the python library which primarily uses for
for the image manipulation like create, resize, merge etc.

This blog post contains the code snippets related to PIL.

How to resize an image

import os
from PIL import Image
img = Image.open("original.png")
#Open the original Image
size = img.size
img = img.resize(size,Image.ANTIALIAS)
#Resize the original Image
img.save("result.jpg",optimize=True,quality=95)
#Save  the result image

==>How to add transparent image watermarkup on an image:

import os
from PIL import Image
img = Image.open("original.jpg") #Open the original Image
width, height = img.size #Get the image width, height 
image_mode = img.mode #Get the image mode 


watermark = Image.open('watermark_image.jpg').convert("RGBA")
# watermark = watermark.resize((width, height), Image.ANTIALIAS)
position_left,position_top = 10 ,10 #Watermark position
position=(position_left,position_top)
orientation = 'horizontal' #Watermark orientation
if orientation=='vertical':  # In case vertical, rotate the image by 45 degree
    angle = 45
    watermark = watermark.rotate( angle, expand=1 )
    img.paste(watermark ,position,watermark)
else:
    img.paste(im = watermark,box= position,mask=0)
    
    
transparent = Image.new(mode = 'RGBA', size = (width, height), color = (0,0,0,0))
# Create a new transparent image
transparent.paste(img, (0,0))
# paste the original image

transparent.paste(watermark, position, mask=watermark)
# paste the watermark image

if image_mode=='RGB':
    transparent = transparent.convert(image_mode)
else:
    transparent = transparent.convert('P')
transparent.save("result.jpg",optimize=True,quality=95)
#Save  the result image

==>How to add text watermarkup on an image:

from PIL import Image
from PIL import Image
from PIL import ImageEnhance
from PIL import ImageDraw, ImageFont
img = Image.open("original.jpg")
margin_left,margin_top = img.size
width, height = img.size
image_mode = img.mode

position_left,position_top = 10 ,10
position=(position_left,position_top)
fill = (0,0,0)
#Watermark text color
watermark = Image.new("RGBA", img.size, color = (0, 0, 0, 0))
#Create a Watermark image

waterdraw = ImageDraw.ImageDraw(watermark, "RGBA")
#Create  a waterdraw for text

font_path = 'Lato-HaiIta-webfont.ttf'
#Image font path url

txt = 'example.com'
#Watermark text
size = max(1, 100)

#####################################
# this part will reduce the watermark text size
fontsize = 1
img_fraction = .40
font_obj = ImageFont.truetype(font_path, 1)
while font_obj.getsize(txt)[0] < img_fraction*margin_left:
    fontsize += 1
    font_obj = ImageFont.truetype(font_path, fontsize)
fontsize -= 1
#####################################
font_obj = ImageFont.truetype(font_path, fontsize)
#Create the font obj with  fonth type and size

waterdraw.text(position, text = txt, fill=fill,font=font_obj )
positioning = 'horizontal'
if positioning=='vertical':
    angle = 45
    watermark = watermark.rotate( angle, expand=1 )

transparent_mode = 'RGBA' if image_mode=='P' else 'RGB'

transparent = Image.new(mode = transparent_mode, size =img.size, color = (0,0,0,0))
#Create the  new image(result image)
transparent.paste(img, (0,0))
#Paste the original image
transparent.paste(watermark, None, watermark)
#Paste the watermark image
transparent.save("final.jpg",optimize=True,quality=95)
#Save  the result image

That’s all for today. I hope this blog will help you. I’d be very grateful if you’d write your opinions, comments, and suggestions to keep the page updated and interesting.

You may also like our post on Using StringIO and BytesIO for managing data as the file object.