Keyword research for low-content KDP books

Keyword research for a low-content book is mostly about one question: what would a real buyer type into the Amazon search bar to find this exact book? If you can answer that with a handful of specific phrases, you know what to put in your title, subtitle and the seven keyword boxes KDP gives you.

You don’t need paid tools to start. Amazon’s own search bar, the product pages of competing books and a simple notes file will get you most of the way. The work is in being specific and honest about what your book is.

This guide walks through a repeatable process you can run for any journal, logbook, planner, puzzle book or coloring book.

Start from the buyer, not the format

Most beginners start with the format: “notebook”, “journal”, “planner”. Those words matter, but on their own they describe millions of books. Buyers who are ready to purchase usually add who it’s for, what it tracks, or the occasion.

Write down three angles for your idea:

• Who: nurses, beekeepers, new dads, seniors, kids aged 6-8

• What it does: tracks blood pressure, logs hikes, records recipes, plans meals

• When or why: retirement gift, first year of marriage, Christmas stocking stuffer

Combine them into phrases a person might type. “Hiking log book for dog owners” or “large print word search for seniors” are far more useful than “hiking journal” alone, because they match a specific need.

Mine Amazon’s search suggestions

Amazon’s autocomplete is one of the best free signals you have, because it reflects what shoppers type. To use it well:

1. Open Amazon in a private or logged-out browser window so your own history doesn’t skew results.

2. Select the Books department, then type your seed phrase slowly.

3. Write down every suggestion that fits your book.

4. Add a letter after your phrase (“dog hiking log a”, “dog hiking log b” and so on) to surface longer variations.

5. Try the phrase with words in front, such as “funny”, “gift”, “large print” or “for women”.

Keep only the phrases that describe your actual book. A suggestion showing up tells you people search for it, but it doesn’t tell you how many, so treat this as a list of real phrases rather than a ranking.

Read the competition for vocabulary

Open the top books for your best phrases and look at how they describe themselves. You’re not copying them. You’re collecting the vocabulary buyers respond to.

Look at:

• Titles and subtitles: which words keep repeating across the first page?

• Book descriptions: what features do sellers highlight (page count, size, prompts, sections)?

• Reviews: what words do buyers use? Reviews often reveal phrases like “easy to carry in a backpack” or “big enough print for my mom”, which hint at both keywords and product improvements.

If the same three or four words appear in nearly every top title, they’re probably core terms you need too. If buyers repeatedly mention a feature nobody puts in their title, that can be an angle.

Put keywords in the right places

KDP gives you a few places where words matter for search:

• Title: the strongest signal. Keep it readable. Something like “Dog Hiking Log Book” works better than a string of every term you found.

• Subtitle: room to add the buyer and the use, for example “Trail Journal for Hikers and Their Dogs to Record Routes, Weather and Notes”.

• Seven keyword boxes: for phrases that don’t fit naturally in your title or subtitle. Use full phrases rather than single words, and avoid repeating words you already used in the title.

• Categories: choose ones that match the book, since browsing shoppers find books this way too.

KDP has guidelines on what you may put in keyword boxes and titles. As a rule, don’t use other authors’ names, brand names you don’t own, misleading claims, or terms that have nothing to do with your book. KDP’s help pages list the current rules, so check them before you publish.

Avoid the common keyword traps

A few habits hurt more than they help:

• Keyword stuffing the title. A title crammed with every variation looks spammy, can conflict with KDP’s metadata guidelines, and makes the cover and listing harder to read.

• Chasing huge generic terms. “Journal” or “notebook” is technically popular, but a new book has almost no chance of being seen there.

• Using trademarked names. Brand names, characters, sports teams and some popular phrases can be trademarked. Using them can get a book blocked or removed.

• Describing a different book. If your keyword says “with prompts” and the interior is blank lines, the reviews will tell everyone.

Check whether a phrase is worth targeting

A phrase being searched doesn’t mean it’s a good target. Before committing, look at the books ranking for it. As a rough guide:

• If top books sit somewhere around 100,000-300,000 BSR, there are usually steady but modest sales.

• If nearly everything is below roughly 50,000 BSR with big publisher names and lots of ads, it’s often crowded.

• If the top books are mostly above about 1,000,000 BSR, there may be very few buyers.

• If top books have under about 50 reviews, there may be room. If every top book has 500 or more, many publishers would move on.

To speed up the first pass, you can type a broad interest into NicheFlow and look at which suggested sub-niches have better Competition and Profit scores, then run your keyword research on the most promising ones. Its BSR and review figures are AI estimates, so confirm them on Amazon before you design anything.

Quick checklist

• Write down who the book is for, what it does and when people buy it

• Collect autocomplete suggestions in a logged-out window under Books

• Note repeated words in top titles, subtitles and reviews

• Put the strongest phrase in your title and supporting phrases in the subtitle

• Fill the seven keyword boxes with phrases, not repeats of your title

• Skip brand names, author names and anything that doesn’t describe your book

• Check BSR and review counts on the top results before committing

FAQ

Do I need a paid keyword tool for low-content books?

No. Paid tools can save time, but Amazon’s autocomplete, competitor listings and reviews give you real buyer language for free. Start there and only add tools if the manual process becomes the bottleneck.

Should I repeat the same keyword in my title and keyword boxes?

Generally there’s no benefit. Use the keyword boxes for different phrases and synonyms that don’t fit in the title or subtitle, so you cover more searches.

How many niches should I target with one book?

One. A book that tries to be a hiking log, a gratitude journal and a meal planner fits none of those searches well. If several angles look good, make separate books for each.