Please refer to the Wiki Documentation for the PDF Bookmarking reference.

SimpleIndex can create PDF files with bookmarks based on the index data captured in your batch.

Going the other way–splitting an existing PDF file based on the bookmark value–is not a built-in feature of SimpleIndex. However there are inexpensive command line utilities that you can integrate with SimpleIndex in order to accomplish this.

For example, the CoolUtils PDFSplitter and A-PDF Split both offer this function starting around $35.

The command line to split the PDF can be integrated into the Pre-Process setting in SimpleIndex, found under the Advanced Settings section of the Configuration Wizard. An example pre-process using PDFSplitter to split based on the second level bookmark values would be:

PDFSplitter.exe “c:\Images\BookmarkFile.pdf” “%CONFIGFILEFOLDER%\Input” -em bookmarks -b 2