To answer this thread: and this: I have a simple solution: To get the same behaviour and the same appearance like the Word checkboxes - use the Word checkboxes. Copy them from a Word document that you have opened with Libreoffice Writer - and paste them into a random Writer document, or make an Autotext entry from it. These checkboxes are clickable and follow the font size of the text around them. Works with Libreoffice Writer 7.2. I have not yet tried newer versions. For me it is a mys...
You can export first single pages (where the cursor is located) of a Writer file into divers formats, also image formats like png. When doing that you can upsize the resolution during export to - say - 300 dpi (in 2 steps).