Create, merge, and clean up chapter-based M4B audiobooks on Windows. ChapterForge is a native audiobook workshop for turning loose audio files into clean, chapter-based M4B audiobooks.

Import a folder of MP3 files, review your chapters, edit metadata, and export a polished M4B with embedded artwork and audiobook-friendly metadata. ChapterForge keeps everything local on your machine — no uploads, no accounts, no cloud processing.

ChapterForge also includes a lossless M4B merge workflow on both Mac and Windows. Combine two or more existing M4B audiobooks into one continuous file without re-encoding the source audio, preserve chapters from every source, and export a single finished book.