How to get image size (bytes) using PIL

Question

I found out how to use PIL to get the image dimensions, but not the file size in bytes. I need to know the file size to decide if the file is too big to be uploaded to the database.

Answer 1

Try:

import os print os.stat('somefile.ext').st_size 

Answer 2

If you already have the image on the filesystem:

import os os.path.getsize('path_to_file.jpg')` 

If, however, you want to get the saved size of an image that is in memory and has not been saved to the filesystem:

from io import BytesIO img_file = BytesIO() image.save(img_file, 'png') image_file_size = img_file.tell() 

This method will avoid multiple reads of the image data as with StringIO. Note, however, that it will use more RAM. Everything is a tradeoff. :-)

Edit: I just saw this comment from the OP:

finally, the problem is from the beginnig, if someone will upload a picture that have 1 giga (forged one) he'll kill the server before PIL will do its stuff, so i must block the request before it finishs!

This is a very different question, and is probably best accomplished at the web server. For nginx, you can add this to your configuration:

http {     #...         client_max_body_size 100m; # or whatever size you want as your limit     #... }