PDF Merger
The PDF Merger module combines multiple separate PDF files into a single PDF - useful for preparing files before uploading them to a Batch Job, or simply as a standalone utility.
PDF Cleanup
The PDF Cleanup module lets you tidy up a single PDF - rotating pages that were scanned sideways and removing pages you don't want - before it goes anywhere near a batch job. Like PDF Merger, this runs entirely in your browser and doesn't require a Document Type or batch job.