Ruby CombinePDF

CombinePDF is an open-source Ruby gem for basic PDF manipulation in Ruby applications and scripts. It is primarily used to merge PDF files, split or extract pages, reorder pages, and add simple overlays such as page numbers or stamps. Developers typically use it in server-side document workflows where a pure-Ruby dependency is preferable.

A distinguishing trait is that it works without requiring an external PDF engine for common operations, which can simplify deployment in Ruby environments. It is best suited to straightforward assembly and page-level editing tasks rather than full PDF rendering, OCR, or advanced form and standards-heavy processing.