iobuffer is a lightweight JavaScript library that lets developers read and write binary data directly to ArrayBuffers with support for little‑ and big‑endian formats, pointers, and convenient helpers (e.g., marking, skipping, and rewinding). It’s aimed at Node.js (and browser) developers who need low‑level binary manipulation—for tasks such as building file parsers, network protocol handling, or image processing—without dealing with the raw DataView API.