An EPUB isn’t a “format” the way a PDF is — it’s XHTML, CSS, and a manifest zipped together. Here’s what’s actually inside, and why some conversions hold up and others don’t.

AI-generated book art rarely arrives print-ready. Here’s what actually goes wrong between an AI image generator and a printed page, and what it takes to fix it.

Owning your book’s copyright and owning its production files aren’t the same thing. Here’s how hybrid publishing file ownership actually breaks down, and what to ask before you sign.

Nonfiction manuscripts read differently once they’re designed because order, callouts, typography, and page count can’t be fully judged until the book is real.

More than a quarter of KDP book categories are ghosts — selectable but invisible to shoppers. Here’s how to spot one and verify a category is live before you publish.

An ebook that looks fine on one Kindle device and broken on another is almost always a fixed-value formatting issue, not a file error KDP would catch.

Your KDP book has been “In Review” for days and you don’t know if that’s normal. Here’s what the status actually means, how long review should take, and when to contact KDP support.

IngramSpark print cost comes in higher than expected for a reason: it’s a page-count-and-trim-size formula, not a flat rate. Here’s how to calculate the real number first.

Text disappearing near the spine of your paperback? Gutter margin loss is almost always a margin math problem tied to page count, not a printing defect.

Blurry images in your KDP or IngramSpark proof? It’s almost always a resolution problem, not a printing error. Here’s how to catch it first.