Image URLs in feeds

I’ve been working on a JSON feed client and I am confused about the image URLs. If I view my feed using a web browser at, then click on an image and select “Open image in new window”, the URL of the image looks like this:

I’m also seeing the double-https URL for image tags when my test client downloads the feed.

Does anybody know why the feed is adding the “” prefix to the image URL?


That’s using the api to set the photo width to 1000 px. The original is at