ChapterForge: The Professional MP3 to M4B Converter Built for Windows.\n\nStop wrestling with scattered MP3 files, messy metadata, or disorganized podcast downloads. Your audio collection deserves structure and quality. ChapterForge takes any folder of MP3s, be it an audiobook, a lecture series, or a podcast and transforms it into a perfectly polished M4B audiobook file. These files are complete with crisp chapter markers, rich embedded metadata, and stunning cover art.\n\nThe essential USP: Quickly convert downloaded MP3 podcast or lecture series files into a single, organized M4B audiobook for seamless listening in standard players.\n\nThe entire conversion process runs 100% locally on your machine. No uploads. No subscriptions. No data leaving your PC. You maintain complete, permanent ownership and control over your files, always.\n\nPower and Speed, Built for Windows\nChapterForge is engineered for serious collectors and creators. It uses professional-grade FFmpeg for broadcast-quality audio output. Thanks to an optimized, single-pass conversion architecture, ChapterForge delivers faster processing times and reduced disk I/O, providing a ~30% speed improvement over traditional methods. Line up multiple projects effortlessly with the batch queue and walk away, confident that the conversion will be handled efficiently. The robust architecture also offers ~90% improved error recovery for reliable results.\n\nThe application is built to provide a modern, responsive user experience that integrates seamlessly with Windows 10 and Windows 11. Its professional dark theme, intuitive layout, and high-quality asset integration offer a smooth experience that matches the quality and appearance of premium audio software.\n\nEffortless Organization. Precise Editing.\nAudiobook management shouldn't feel like work. Click "Import MP3 Folder," and ChapterForge does the heavy lifting: it automatically scans your files, intelligently maps and extracts correct metadata (like mapping Album to Title and Artist to Author), finds embedded or folder-based cover art, and organizes everything into a structured, chapter-ready project instantly.\n\nFor power users, the app offers two powerful editing views:\n\nPrecision Chapter Editor: Easily drag chapters to reorder them and adjust metadata for individual chapters.\n\nPowerful Bulk Editor: Save hours by performing operations across multiple chapters at once, including Auto-numbering and Regex Find & Replace capabilities.\n\nIf you are an audiobook collector, content creator, or anyone converting long recordings, ChapterForge is the essential tool for building and organizing your personal library on Windows.\n\nKey Features at a Glance\nUniversal M4B Conversion: Instantly convert MP3 collections, including podcasts and lecture series, into the structured, chapter-enabled M4B format, ready for all standard audiobook players.\n\nPerformance Optimized: Enjoy fast, single-pass conversion that provides a ~30% speed boost and a robust architecture with ~90% improved error recovery.\n\nAdvanced Bulk Editing: Save time with the comprehensive Bulk Editor:\n\nAuto-number chapter titles (Chapter 1...N).\n\nPrefix/Suffix and advanced Find & Replace with support for Literal, Wildcards, and Regex modes.\n\nSmart Metadata Tools: Edit rich metadata (Title, Author, Narrator, Genre, Year, etc.) and use the Propagate from Project feature to copy common fields to selected chapters instantly, with a single-step Undo feature.\n\nQueue Management: Use the powerful batch queue to line up multiple conversions with configurable concurrency limits.\n\nPrivacy First: All processing is done locally on your device. No cloud services, no uploads, and no subscriptions required.\n\nSeamless Windows Integration: Automatic updates and a native feel optimized for Windows 11.\n\nWho Needs ChapterForge?\nThe Audiobook Collector: Building a massive, curated, and organized M4B library on Windows.\n\nThe Knowledge Seeker: Converting downloaded lecture series, courses, or training recordings into single, organized audiobooks.\n\nThe Podcast Listener: Combining hours of MP3 podcast episodes into a structured, chapter-marked M4B file.\n\nThe Content Creator: Producing final, professional audiobook formats from source recordings.\n\nThe Migrator: Users leaving cloud-based services who want complete, local ownership and permanent file control.