Once you open a document and choose a conversion type you can apply one of these two ways to select the entire document:
If you need the entire content on one specific page only, there are two ways to do that:
There are two ways to select a page range you want to convert:
After you enter the page range, click Enter on your keyboard and the Convert button will be activated. If you want to select different page ranges at the same time, just separate these ranges with commas, like in this example: 1,3-5,13-17.
To convert only a specific area you can activate the Select Area option and highlight the part of content you wish to convert.