There's a version of this question that sounds simple. What makes a good book design? Just make it look nice, right?
Not quite.
Good book design is actually about making things invisible. When a book is designed well, you don't notice the fonts, the spacing, or the margins. You just... read. You're pulled into the story or the ideas, and the design quietly does its job in the background. The moment design calls attention to itself — something feels off about the spacing, the font looks wrong, the cover doesn't match the genre — the spell breaks.
So what actually goes into getting it right? Here's what matters most.
Typography Sets the Entire Tone
Most people don't think about fonts when they read a book, but they feel them. The typeface you choose for your body text affects how long someone can read comfortably, how serious or playful your book feels, and whether the whole thing looks like a professional publication or a Word document someone printed at home.
For most books, a classic serif font is the right call. Garamond, Caslon, Minion Pro — these have been used in print for centuries because they work. They guide the eye across a line of text in a way that's effortless for the reader. The size, the line spacing, the spacing between letters — all of it gets calibrated for the specific trim size and genre of your book. A novel formatted at 5×8 needs different settings than a business book formatted at 6×9.
Get typography wrong and everything else suffers. Get it right and no one will ever comment on it — which is exactly the goal.
Margins and Spacing Are More Important Than They Look
One of the most common signs of amateur book formatting is margins that are too narrow. The author or designer squeezed the text to save pages, and the result is a book that feels suffocating to read.
Margins serve a real purpose. The inner margin — the one closest to the spine — needs to be wide enough that text doesn't disappear into the binding. The outer margin gives readers a place to hold the book without their thumbs covering words. The top and bottom margins frame the text block on the page so it feels balanced and intentional.
White space in general isn't wasted space. It's breathing room. It's what makes a page feel readable rather than crammed. Professional book designers think carefully about where that space goes and why — and the difference shows every time you open the book.
The Cover Needs to Do a Specific Job
A lot of authors think a "good" cover just means something that looks attractive. But attractive isn't the same as effective. A cover that works is one that does a very specific job: it signals the genre, sets the mood, and makes someone want to know more — all within about two seconds.
Every genre has its own visual language. Thrillers use dark tones, sharp typography, and a sense of tension. Romance covers are warm, often feature people, and use softer color palettes. Business books tend to go clean and bold. If your cover doesn't speak that language, readers in your genre will scroll right past it.
And it all needs to hold up as a thumbnail. On Amazon, your cover is tiny. If the title isn't legible at that size, or the image turns into an indistinct blur, you've already lost the click. Good cover design accounts for every size and context it'll appear in.
Consistency Across Every Page
This one sounds obvious but gets missed constantly. Good book design is consistent from the first page to the last. Chapter openers all look the same. Heading styles don't drift. Section breaks use the same ornament or spacing throughout. Page numbers sit in the same spot on every page.
Inconsistency is the design equivalent of typos. Readers don't always catch it consciously, but it accumulates as a feeling that something is slightly off. That feeling chips away at trust in the book — and by extension, the author.
A professionally designed book holds its visual logic from cover to cover. Every decision that was made on page one is honored on page two hundred.
The Technical Stuff That Has to Be Right
Even a beautifully designed book fails if the files aren't set up correctly for printing. This is the part nobody talks about until something goes wrong.
Print-ready files need to be exported as PDF/X with fonts embedded, images at 300 DPI, and correct bleed settings for the cover. The trim size needs to match exactly what your printer or distributor requires. KDP and IngramSpark both have specific technical requirements — and if your files don't meet them, your book either gets rejected or comes back with quality issues.
This is one of the biggest reasons authors hire professionals. Not because they can't learn it, but because the stakes are real and the margin for error is small.
What We Do at Literary Lab
At Literary Lab, we've built our entire process around getting all of this right — not just the parts that are visible, but the technical foundation underneath.
We work with authors on interior formatting and cover design, and we treat every project as its own thing. Your book isn't going through a template machine. It's getting a layout built for its specific genre, length, and publishing goals.
If you want to see what a properly designed book looks and feels like — or you're ready to get yours done — reach out to us here.
Good book design doesn't shout. It just works. And when it works well, the only thing readers notice is how much they're enjoying your book.
Literary Lab is a book design and formatting studio for independent authors.