http://ubuntuhandbook.org/index.php/201 ... ntu-16-04/
gscan2pdf is a GUI to ease the process of producing PDFs or DjVus from scanned documents. You scan one or several pages in with File/Scan, and create a PDF of selected pages with File/Save PDF. At maturity, the GUI will have similar features to that of the Windows Imaging program, but with the express objective of writing a PDF, including metadata. Scanning is handled with SANE via scanimage. PDF conversion is done by libtiff. Perl is used for portability and ease of programming, with gtk2-perl for the GUI. This should therefore work more or less out of the box on any system with gtk2-perl, scanimage, and libtiff.
It is available in standard repositories. If having an up-to-date app is important to you, and you are an Ubuntu-based Dog user, a PPA is available
Debian Buster has version 1.8.7.
