“although epub would be great for novellas and so on... I dont think Strategy guides or other not quite "booky" products would be great... as you'd usually want to keep color and everything displayed” Obsidian.net · 13 years ago

If you see "(Untitled)" in your Table of Contents, it is usually because the source file is missing a header for that section.

“The file is an EPUB document, and odds are you don't have a program on your computer that will install the file. Luckily, you can use Google Play Books to your advantage here.” Facebook · STRYD Community · 3 years ago

Pre-installed on Macs, iPhones, and iPads; it handles EPUB files natively.

If the book has many images or a specific magazine-style layout, EPUB may occasionally struggle to keep everything in its exact place compared to a PDF. Reader Perspectives

Since EPUBs aren't native to most computer operating systems, you'll need a dedicated reader.

A highly recommended free software for PC/Mac that lets you organize, convert, and read your library. Managing and Troubleshooting