PDFArranger is an editor program to merge, split, rotate, crop, rearrange, duplicate and interleave pages. The program supports drag-and-drop insert of other PDF files, auto-crop whitespace, rotation of individual or any combination of pages, scale size (e.g. tabloid to letter size), and more.
The program can export components of the PDF to separate files or import standard images into a PDF document.
Cross-platform with clients available for Linux.