FastImage 
This is an implementation of the excellent Ruby library FastImage - but for Python.
FastImage finds the size or type of an image given its uri by fetching as little as needed.
Installation
pip install fastimage
Usage
Usage is pretty dang simple.
import asyncio
from fastimage.detect import get_size
loop = asyncio.get_event_loop()
url = "http://stephensykes.com/images/ss.com_x.gif"
width, height = loop.run_until_complete(get_size(url))
print("Size:", width, "x", height)
which will poop out:
Size: 266 x 56
You can also just get the image type:
import asyncio
from fastimage.detect import get_type
loop = asyncio.get_event_loop()
url = "http://stephensykes.com/images/ss.com_x.gif"
result = loop.run_until_complete(get_type(url))
print("Type:", result)
which will poop out:
Type: gif
Right now, sizes can be deduced from webp / gif / jpg / png. Additionally, it can detect the type (but not size) of bmp / tiff.
137 Dec 14, 2022
2 Feb 17, 2022
2 Jan 22, 2022
1 Jan 16, 2022
3 Apr 13, 2022
199 Dec 8, 2022
44 Nov 17, 2022
3 Dec 3, 2021
1.4k Jan 1, 2023
3 Dec 22, 2021
2 Jun 20, 2022
11 Jul 19, 2022
28 Dec 15, 2022
2 Nov 19, 2021
2 Dec 30, 2021
48 Jan 5, 2023
1 Mar 2, 2022
8 Dec 30, 2022
2 Apr 18, 2022