Free Windows GUI front-end for the PDFtk command-line tool, exposing its operations — split, merge, stamp, add page numbers, rotate, edit metadata, manage bookmarks and attachments — through point-and-click dialogs instead of the command line. Aimed at users who want PDFtk's capabilities without writing or remembering CLI invocations, or learning PDFtk's own multi-flag command syntax for routine batch operations.
A fork/continuation of Angus Johnson's original PDFTK Builder.