The PDF Batch Stamp Tool is a command line tool that can stamp and watermark PDF documents with text and image stamps.
The PDF Batch Stamp Tool uses a control file with stamp directives that set properties and can indicate the location of input files. The tool can also be used to concatenate PDF files with individual stamp texts and retain, create or omit bookmarks.
The following functionality is available in the PDF Batch Stamp Tool:
Apply several separate textual stamps with different properties
Set properties such as the text font, size and rendering mode, font color, text position and text angle
Apply image stamps
Set the alpha channel to create invisible and transparent stamps
Set the page range to be stamped
Center the text or put it transverse (from lower left to upper right)
Place the text relative to any corner of the page and in any angle
Concatenate (merge) PDF documents with individual stamp texts
Stamp page numbers and add a page number offset
Stamp rotated pages of different sizes
Retain or omit bookmarks as defined
Set document attributes
Add a removable stamp
Remove the stamps you have added
Place the stamp in the background
Scale each page by a factor (e.g. 0.5)
Decrypt the input files
Encrypt the output files with user and owner passwords and access permissions
OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.