PDFTK Builder Portable 3.9.2 has been released. PDFTK Builder Portable is the lightweight PDFTK Builder packaged as a portable app, so you can modify, split and watermark your pdfs wherever you go. It's packaged in PortableApps.com Format so it can easily integrate with the PortableApps.com Platform. And it's open source and completely free.

FEATURES
Collate - allows you to rearrange (reorder, delete, & duplicate) pages in a single document and/or merge pages from multiple PDF documents. Multiple documents will be merged in the order they are listed in the 'Source Documents' window. If page ranges are not specified, PDFTK Builder will assume all pages for that document are to be included. Page ranges can be indicated by using a single page number, or a hyphen between start and end pages, and reversed page orders are also allowed. Multiple ranges are indicated by using commas or semi-colons between ranges. Collate can be used to remove pages from a single document simply by specifying the page ranges you wish to retain for that document. Collate can also be used to insert pages from one pdf document into another.
Example:- if you wished to insert pages from one document into the middle of another, then the primary document would need to be listed twice: once before the insertion document, listing pages to appear before; and once after, listing pages to appear after the the insertion document.

Split - allows you to separate each page of a PDF document into its own file.

Background or Stamp - 'Background' enables you to add a background to each page in a document or just the first page. The 'background' (eg a company logo, or a 'draft' watermark) must be another PDF document (the first page of that document if it has more than one page). 'Stamp' is very similar to 'background' except that the 'stamp' is placed on top of the source document.

Page numbering - allows you to add page numbers to your documents. By default page numbers will be added to the bottom right corner of each page. The numbering location and page size can be changed in PdftkBuilder.ini. The initial settings assume an A4 document with portrait orientation. Page dimensions are defined in 1/72 inches.

Rotate - 'Rotate' enables you to rotate a range of pages in a document.

Password Protection: The new document can be password protected (encrypted) by providing 'owner' and 'user' passwords. The 'owner' password does not stop users from reading the document, but it does restrict the actions that users can perform on that document - printing, copying, decrypting etc. Specifying a 'user' password will stop anyone without either 'user' or 'owner' passwords from opening and reading the document.

PortableApps.com Installer / PortableApps.com Format
PDFTK Builder Portable is packaged in a PortableApps.com Installer so it will automatically detect an existing PortableApps.com installation when your drive is plugged in. It supports upgrades by installing right over an existing copy, preserving all settings. And it's in PortableApps.com Format, so it automatically works with the PortableApps.com Platform including the Menu and Backup Utility.