A user is interested in viewing the percentage of content on a page (image or article). Does anyone have a trick for this? For example a half page image showing at 50% or a 1/3 column showing at the 33%.
There might be a script for that if you can be more specific about what information you're aiming for and why. It's not a built-on feature.
Interesting question nevertheless. The concept of filling the page is far beyond placing an item onto the page. What if a text frame occupies most of the frame but only contains a small set of characters ? What about special effects such as drop shadows whicha are not actual objects but may cover the page anyway.