Bound Book Format: A high-performance, DirectStorage-native container format for comics and manga - ef1500/libbbf

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BBF (Bound Book Format) is a high-performance binary container format optimized for digital comics and manga. It features DirectStorage/mmap compatibility with 4KB sector alignment, footer-indexed structure for rapid random access, parallel XXH3 integrity verification, native content deduplication, and mixed-codec support. The format includes hierarchical sections for chapters/volumes, arbitrary UTF-8 metadata, and per-asset integrity checks. The reference implementation (bbfmux) provides CLI tools for creating, verifying, and extracting BBF files with advanced features like custom page ordering and targeted extraction.

ef1500/libbbf: Bound Book Format: A high-performance, DirectStorage-native container format for comics and manga