KDP Keyword Research Guide

KDP gives you seven keyword fields, each up to 50 characters. A field can hold a full phrase, not just one word — so you actually get seven phrases. Amazon recombines them with your title, subtitle, and description to decide which searches your book appears in. Wasting a field is giving up ~14% of your discoverability.

Amazon is a buyer's search engine, not a research engine — every searcher is at least considering a purchase. Ranking is relevance × performance: relevance comes from your metadata, performance comes from clicks and sales when shown. Recent sales velocity weighs heavily, which is why a small early burst can lift a brand-new book past older quiet competitors.

Amazon's search bar autocomplete is a free list of phrases real shoppers type, ranked by popularity. Start typing your seed (e.g. 'gratitude journal') and record every suggestion. Then add modifiers — audience (for women, for kids), benefit (with prompts, large print), style (minimalist, Christian), occasion (gift, mothers day). Each combination is a candidate.

A keyword like 'journal' has massive volume and zero specific intent — and you'll never out-rank established brands. 'Prayer journal for women with scripture' has lower volume but the searcher knows exactly what they want. Long-tail keywords with clear intent convert 3–10x better and are realistic for a new book to rank for.

Score each candidate 1–3 on demand (autocomplete prominence, search results count), beatability (top 10 cover quality, review counts, age), and intent. Add the scores. Keep your seven highest. This prevents falling in love with a phrase that sounds good but can't sell.

Leaving fields blank. Repeating words already in your title (Amazon recombines — no need). Using quotation marks or commas. Targeting misspellings (Amazon handles them automatically). Setting and forgetting — markets shift, so revisit after 60–90 days based on real performance.