It is a long process, but quite easy. You first download the photo to your PC. Then go to Postimage.org (https://postimages.org/).
Click on "choose images" , then you browse for your photo, and double click on your photo. It will then down load your photo. Then you click on the 4th row (Markdown), right hand side blue icon. It will then say copied, then you paste your photo on your post!! (I use StackEdit to write my posts, but it should work like this)