What Common Mistakes Should Be Avoided In Epub Editing?

Let's talk about the stuff nobody mentions until you're staring at a broken table of contents at 3 AM. The biggest one I see? Over-relying on automated tools without checking the output. You run a Word doc through Calibre, get a nice-looking EPUB, and think you're done. Then you open it on a Kobo and half the paragraph spacing is doubled, or the chapter headers look wrong on a phone. The automated conversion is a starting point, not the finish line. You absolutely have to open that file on at least three different devices—a Kindle, a phone app like Moon+ Reader, and maybe an iPad. What looks fine on one can be a mess on another.

Another classic mistake is using the wrong kind of formatting for things like italics or drop caps. People will sometimes insert images for special text effects instead of using proper CSS, and then those images don't scale with the text size. If a reader bumps up the font size, your fancy stylized letter becomes a tiny postage stamp floating in a sea of text. Just learn the basic CSS. It's not that scary, and it makes your ebook actually responsive.

And metadata! So many indie authors just fill in the title and author and call it a day. You need those keywords, a good description, and to set the correct language. If you don't set the language, some e-readers can't use their dictionary or text-to-speech functions properly. It feels like a small thing, but it's the difference between a professional product and an amateur one. I've bought books where the 'chapter' links in the NCX just went to page one of each chapter, not the actual chapter title. That's a navigation nightmare.

Honestly, the mistake I made for years was ignoring the semantic code. I'd just make chapter titles big and bold using the paragraph style, not the header tag. Screen readers and some e-reader navigation menus rely on those tags to understand the book's structure. If you don't tag your chapters as proper headings, you're making the book less accessible. It takes two seconds to apply the right style, and it makes a world of difference for people who use assistive tech. It's not just a technical checkbox; it's about letting everyone actually read your work properly.

Everyone warns about the technical stuff, but honestly? I think the most common error is forgetting who you're formatting for: the reader. It's tempting to get creative with custom fonts, background images, and intricate layouts to make your ebook 'special.' But most people just want to read. They change the font to their preferred one, tweak the margins, and adjust the brightness. If your design is too rigid, it fights the reader's own settings and creates a frustrating experience.

I edited a friend's memoir where they used a specific serif font for the whole manuscript to convey a 'classic' feel. It looked beautiful in the PDF. In the EPUB, on devices that didn't have that font, it defaulted to something completely different and the line breaks went all over the place. The fancy vision wasn't worth the broken functionality. Simplicity is key. Use a clean, logical structure with standard heading tags (h1, h2) and let the reader's device handle the visual presentation. Your job is to ensure the structure is sound, not to control every pixel.