To preserve formatting when copy-pasting, I'd go with Wordpress, you'll save time and all your images can be also be imported in one or two clicks. Honestly I

To preserve formatting when copy-pasting, I'd go with Wordpress, you'll save time and all your images can be also be imported in one or two clicks. Honestly I don't know if other platforms such as Blogger/Blogspot preserves formatting, but I hope so. For the maps and images, which I assume only cover part of the slideshow, for each slide do screencaptures of only the images (that is, they will be already cropped and separated from the text, hope I explained myself). After you finish exporting all your images as individual pieces, it will be very easy to import them into place in your Wordpress.