We have developed a free wordpress plugin that allows you to update text/images/html code on the frontend of the website without the visitors having to refresh the browser to see the new updated content. You can insert the shortcode onto the page or post and edit the content in the backend of your wordpress website. Once you click publish there is a 5 second delay and the content is updated in realtime without any need for the user to refresh the browser.
This is great if you want to publish a page with live updates and don’t want the user to keep clicking the refresh button.
It works like the screenshot below. The shortcode is [flasher]