Originally Posted by Starson17
Not with Calibre. A new pdf engine is in progress that will handle multiple columns.
I found a work around for books that have been scanned as 2 x book pages per single pdf "page"
1. open PDF in adobe viewer, use EDIT + send file to clipboard option.
2. now that the text is on the clipboard you can paste either directly into a new sigil document , or paste into a new word document + save as filtered HTML. ( NB an entire book will take a while to appear in sigil, just be patient )
3. save work from step 2, import add saved book file to calibre, convert to format of your choice. use calibre heuristic etc convert tools to tidy up presentation.
the key step is 1. which takes the 2 column narrative & reflows it as a single column. tried it on a couple of novels & it has worked fine. ( I also cropped off page headers with another pdf tool before step 1 )