Number of pages are estimated based on the number of characters in the content-documents. This algorithm is a bit slower but will provide a more correct result.
Note that this algorithm will fetch all content-documents in the publication which may cause extra chunks to be downloaded if using a remote RandomAccessDataSource, which may increase time until the PageProgressionTimeline is available.
Number of pages are estimated based on the file size of the content-documents. This is the fastest algorithm but the most inexact.
Available algorithms when estimating the number of pages in reflowable content-documents. Number of pages estimation is used by the PageProgressionTimeline when the ReaderView option pageProgressionTimelineOptions.forceCompleteRendition is set to false.