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Describe your book and get the 7 Amazon backend keywords and the best browse categories to help the right readers find it — the part of self-publishing most authors get wrong.
Amazon doesn’t just sell books — it’s a search engine for them. When a reader types “cozy small-town mystery” or “enemies to lovers fae romance”, Amazon matches that against your title, subtitle, description, categories, and your seven backend keyword phrases. Those seven slots are the lever most authors leave unpulled.
The trick is to think like a buyer, not a writer. You know your book’s themes; readers know the phrases they search. Fill the gap with reader-language phrases you haven’t already used in your title, and pick the most specific categories you honestly qualify for — that’s where new books earn their first bestseller badge.
KDP gives you 7 keyword slots when you publish. Each slot can hold a short phrase (up to 50 characters), so you are really getting seven chances to match how readers search. This tool returns exactly seven distinct phrases you can paste straight into those slots.
Good keywords are phrases real buyers type into the Amazon search box — not single generic words. Avoid repeating words already in your title or subtitle (they are indexed anyway), skip subjective terms like "best", other authors’ names, and the word "free", all of which violate KDP rules. Specific, reader-language phrases win.
Pick the most specific categories that genuinely fit your book — a smaller, accurate category is far easier to rank (and hit a bestseller badge) in than a giant broad one. This tool suggests two to three specific browse paths; you can request up to three categories from KDP.
Yes. No account, no card. There is an hourly fair-use limit to keep it fast for everyone. When you are ready to actually write or finish the book, free Bookwiz accounts include monthly AI requests.
Still shaping the book? Start with a title and an outline, or write the whole thing in Bookwiz.