I use the built in preview feature of WordPress constantly while writings posts to keep tabs on how the finished product is coming along. As far as I know, there is not a way to preview the home page before publishing a WordPress post. I’d love to see a plugin that would allow an author to preview posts not just in the singular post view, but also as it would look on the home page.
Why would I want this? Well, many sites format posts to render differently on the front page than the singular post view. For example, a site may utilize thumbnails on home page excerpts that would be nice to check in the preview. Also, sometimes it is nice to see how the excerpt wraps around thumbnails that don’t have set height dimensions. Or perhaps the title is a different size on the home page than the singular post view, which could cause a widow (title that has one word wrap to the next line) on the home page that doesn’t exist on the singular view.
The WP-Typography plugin has a widow prevention feature for titles, but it doesn’t prevent everything I’d like to check in a home page preview.
I really haven’t looked into it at all as to how this would work, but it seems simple enough. If anyone knows of a plugin like this that already exists, I’d love to know about it.