Yes, it only concerns itself with PDF documents and conversions to and from PDF
I have never used paperless so I am not really the best person to answer this, but I believe paperless is a document management system, and is designed for document ingestion and organization?
Bento on the other hand, is a full PDF Toolkit, that allows you to edit, compress, annotate, sign, redact, convert pdf to other formats and convert to pdf from other formats, converting pdf for ai ingestion etc. Basically everything related to PDFs. Hope that helps.
Its exactly same as the live website: bentopdf.com