Python – Read blob object in python using wand library

BLOB stands for Binary Large OBject. A blob is a data type that can store binary data. This is different than most other data types used in databases, such as integers, floating point numbers, characters, and strings, which store letters and numbers. BLOB is a large complex collection of binary data which is stored in Database. Basically BLOB is used to store media files like images, video and audio files. Due to its ability to store multimedia files it takes a huge disk space. Also length of BLOB may go upto 2, 147, 483, 647 characters. BLOB provides fast multimedia transfer.

To get blob file from image :

     with open('image_path') as f:
    image_blob =

To read image from blob in Wand :

with Image(blob=image_binary) as img:
    \\other code

Input Image :

Code :





# import required libraries
from __future__ import print_function
# import Image from wand.image module
from wand.image import Image
# open image using file handeling
with open('koala.jpeg') as f:
    # get blob from image file
    image_blob =
# read image using wand from blob file
with Image(blob = image_binary) as img:
    # get height of image
    print('height =', img.height)
    # get width of image
    print('width =', img.width)


Output :

height = 300
width = 400

Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course.

My Personal Notes arrow_drop_up

Hi there I am a student of CGC COE, Landran in CSE department and have a great interest in programming

If you like GeeksforGeeks and would like to contribute, you can also write an article using or mail your article to See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.

Article Tags :

Be the First to upvote.

Please write to us at to report any issue with the above content.