Categories & Keywords

This is general orientation on how the system works, not a live search tool. For actual keyword search volume and category-saturation numbers, a paid tool like Publisher Rocket does that job properly, this is meant to get the basics right first.

What categories actually do

KDP lets you pick 2 browse categories from the dropdown when you publish, but you can request up to 10 total by contacting KDP support after publishing, most authors never do this and leave real, free visibility on the table. Categories are also how a book earns an orange "Best Seller" badge, ranking #1 in a big, broad category is essentially impossible, ranking #1 in a small, specific, well-matched one is realistic and the badge itself drives clicks regardless of which category earned it.

Choosing categories well

• Specific beats broad. "Fantasy > Coming of Age" tells Amazon (and a browsing reader) far more than "Fiction > Fantasy," and it's a realistic category to actually rank in.
• Browse the category on Amazon itself before picking it. If every book on the first page has thousands of reviews, that's the actual competition you'd be ranking against, not a number a picker tool shows you.
• Request the extra backend categories KDP doesn't expose in the dropdown by contacting KDP support directly after publishing and naming the exact category paths you want, both fiction and nonfiction have categories only reachable this way.
• Revisit categories after launch. They're not locked in, if one isn't working, ask support to change it.

Your 7 keyword slots

KDP gives you 7 keyword fields, each can hold a short phrase, not just a single word. The most common mistakes: repeating words already in your title or subtitle (those are already indexed, a keyword slot doing the same job is wasted), using a single broad word like "fantasy" instead of a specific phrase a reader would actually type, and using another author's name or a trademarked term, which violates KDP's content guidelines and risks the listing itself, not just that keyword.

A good keyword phrase describes what a reader is looking for, not what your book is about in the abstract. "enemies to lovers fantasy romance" will do more work than "epic adventure."