Scanned the fronts, then the backs? Put the pages back in order: front 1, back 1, front 2, back 2.
Blank backs in your scan? Take them out with remove blank pages. Making the file smaller? Use compress PDF.
When your scanner only scans one side: you scan the stack once for the fronts, turn it over and scan again for the backs. This puts the pages back in the right order: front 1, back 1, front 2, back 2 and so on.
Turning the stack over usually scans the backs last page first, so “Backs are in reverse order” is ticked. If yours came out first page first, untick it and check the order shown before saving.
Choose “One PDF: fronts, then backs”. The first half of the pages are taken as the fronts and the second half as the backs.
No. The pages are put in order in your browser and copied without any loss of quality.
