Magento – Can Magento 1.9 be configured to load product images directly from an external URL:

There is no such process to upload images in magento. You can import all the images at a time. This can be done through CSV import. But we cant import through a CDN url. For importing images through CSV, Follow the steps.

1. First you have to upload alll the images you want to import in the media/import/yourimagesfolder/

2. The in the CSV columns for image, thumbnail and small_image your image path should look like this

/yourimagefolder/imagename.jpg

3. At last you have to import the CSV.

Using Magento's default Import or Dataflow Import doesn't allow you to download and assign an image via a CSV import. You'll either have to download the image and upload it to the server with the correct path in your CSV or you can look at a 3rd party tool like Magmi for importation.

Magmi's documentation is fairly solid and will allow you to download and assign a product an image via a CSV import.

Magmi's Documentation can be found here - http://wiki.magmi.org/index.php?title=Main_Page

I would also ensure that the link you're providing the image field is valid and displays the image when you access it in a browser, the one you have provided displays a page error/404.