BiblioFuse - EPUB Compress & Merge Tool – Offline EPUB compression and merging utility

Summary: BiblioFuse is a Windows-based tool that compresses image-heavy EPUB files by optimizing internal images and merges multiple EPUBs into a single file with regenerated navigation. It processes EPUBs offline, preserving privacy and handling complex XML structures automatically.

What it does

BiblioFuse reduces EPUB file size by resizing and converting internal images to formats like WebP without losing readability. The Pro version enables merging multiple EPUB files into one, updating the Table of Contents for seamless navigation.

Who it's for

It is designed for ebook collectors, students, and digital archivists managing large or fragmented EPUB libraries on Windows.

Why it matters

It solves storage issues caused by large, image-heavy EPUBs and clutter from multiple small files, while ensuring privacy by performing all operations offline.