A user asked in my favorite German forum “Office Lösung” about MS Office, if it is possible to automatically update an image from a web server in Excel. The user also posted some sample links and wished that the update should occur every minute.
The images from the web server are sent to the browser as raw data and therefore no HTML code is used. By the way, this can be for example achieved in PHP by calling the functions “header()” and “readfile()” in a specific order and setting the arguments to appropriate values. Unfortunately, we cannot use an Excel web query for linking to the image as the query will return unusable data. So, another solution must be found in this case.