My question is on calculating page coverage in a Word or PDF document.
When my screen size (zoom) is set to 50% (so I can see the entire document) and I use the Coverage Area (screen) method and fit to page; the coverage is 6.35%. Now when I change the screen size to 25%, page coverage is 10.92%.
The same is true in PDF files.
Any help would be appreciated.
varying page density
The difference is in how Word and other editors show letters on preview. You can use ZOOM menu item in APFill to increse a part of the document and you see that letters on screen have smoothed edges. So the smaller size - the more error in the coverage estimation. To get accurate results you should fit page to whole screen (in screen measuring mode) or just use PS file to estimate coverage.