Make sure Amazon shelves your book where your readers are looking

Get your category right and the readers who want exactly your kind of story find you. Get it wrong and your book is invisible — sitting on a shelf your readers never browse. Shelfsmith checks your book against thousands of real titles and tells you where it lands — so you can fix it while you still can.

The thing most authors don’t realise

When you publish on Amazon you choose up to three categories. But Amazon doesn’t simply take your word for it — its system reads your title, subtitle, blurb and keywords and decides whether your book really belongs there.

If those signals say “generic contemporary romance” but you chose “Clean & Wholesome,” Amazon can quietly file you in the broad category instead — the one with a hundred thousand books and none of your specific readers. And once the book is live, that placement is painful to undo.

So what exactly is a “BISAC” code?

BISAC (Book Industry Standards and Communications) is the publishing industry’s official list of subject codes — a standard way of saying precisely what a book is. Every romance sub-type has one:

Think of a BISAC code as your book’s shelf label — written in a language every bookstore, library and retailer understands.

Here’s the part that trips authors up: on Amazon you no longer pick a BISAC code yourself. Since 2023 you choose an Amazon category, and Amazon works out the matching BISAC automatically, behind the scenes. So the category you pick is your BISAC — you just never see the code. It still matters directly if you go “wide” (selling through IngramSpark, libraries and other retailers), where the BISAC is exactly how your book gets shelved.

Two ways to use it

What the free check gives you Free

Whichever way you use it, the free check is your diagnosis:

• Where your book lands — the category it reads as (pre-publish), or the real shelves Amazon has put it on (published), versus the one you want.
• Whether it’s even eligible — you can’t sit on the Clean & Wholesome shelf with an explicit book; Amazon won’t allow it, and we’ll tell you before you try.
• The top categories your book reads like right now — and, if you’re off, a plain-English reason why.

The exact fix Upgrade

The free check tells you what’s wrong. For the price of a coffee, we tell you exactly how to fix it — everything ready to copy straight into KDP, and sent to your inbox too:

• The exact Amazon category to select — and its BISAC code — so you land where you want.
• A tightened, rewritten blurb that reads as your target category, not a vague one.
• Your 7 keywords, drawn from what readers are actually searching for right now.
• A subtitle that reinforces it all.

$5 per book  — one book, five dollars, no guesswork.

How authors use it

1. Choose whether you’re checking a book before you publish, or auditing one that’s already live.
2. Tell us the category you want, then paste your blurb — or drop in your published book’s Amazon link.
3. Get your free diagnosis: where you land, whether you’re eligible, and why.
4. Upgrade for $5 to get the exact category, BISAC, blurb, keywords and subtitle — copy them into KDP with confidence.