Keywords are the words that readers type into a store search box, and the keywords that you give a platform help it match your book to those searches. On KDP, at the time of writing, you can enter seven keyword fields for each book, and each field has a character limit, so the phrases that you choose have to be both relevant and short. Authors often fill them with single words that mean little or repeat the title, and miss the phrases that readers really use.
Free tool · Book Keyword Generator
Book Keyword Generator that finds the phrases that your readers actually type
The book keyword generator builds keyword phrases for KDP and other stores from your main topic, your genre, your readers and your tropes or sub-topics, in the patterns that real readers type, and shows the length of each phrase against the 50-character limit, with a copy button for each. It runs in your browser, is free and is meant to help you brainstorm and then test the phrases in the store.
Use the free tool
The book keyword generator is free to use, with no account and nothing uploaded.
- Phrases from your topic
- Tropes and readers
- Length check
Key facts
- FreeNo cost, no account and no usage limit on the book keyword generator
- In your browserNothing that you type or paste into the book keyword generator is uploaded
- SecondsTypical time from opening the book keyword generator to a result
Free tool
Book keyword generator
Build keyword phrases for KDP and other stores from your topic, genre, readers and tropes, and check each one against the character limit.
The book keyword generator needs JavaScript, and it works in your browser without sending anything that you enter to a server.
Overview
What the book keyword generator does and why it helps
The generator starts from what you know about your book. You enter the main topic or story idea, the genre, the readers you write for and a few tropes or sub-topics, and the tool combines them into phrases in the shapes that shoppers use. For fiction it produces phrases such as a genre with a trope, a trope for a type of reader, books like a given idea and a series phrase. For nonfiction it produces phrases such as a topic guide, a topic for beginners, how to, step by step and tips. Each phrase is shown with its length, marked as fitting or too long.
Treat the list as a starting point. Test the best phrases in the store's search box to see what it suggests, since the suggestions show what shoppers actually type. Avoid repeating words that are already in your title and categories, since the store already counts them, and never use the name of another author or brand. Keep the rules current, because stores change their keyword limits and policies, and check the instructions of each platform before you publish.
The book keyword generator suggests keyword phrases that readers might type into a store search box, which you can test and use in your KDP keyword slots. This is a free book keyword generator, built for authors who want a clear answer without buying software. It runs as a book keyword generator online, so a laptop, tablet or phone is all you need. The wording and defaults suit a book keyword generator for authors, not general business users. If you publish independently, treat it as a book keyword generator for self-published books of any length. Amazon authors can use it as a book keyword generator for KDP with no changes. There is no account to create, so this book keyword generator no sign up page is ready the moment it loads. If you are hunting for the best book keyword generator, judge it by whether it explains its numbers, as this one does.
How to use it
How to use the book keyword generator, step by step
Enter your main topic
Type the central subject of your book, such as cozy mystery, weight loss or time management. The tool builds phrases around it in the patterns readers type into a search bar.
Choose fiction or nonfiction
The patterns differ. Fiction phrases use tropes, settings and sub-genres, and nonfiction phrases use problems, results and readers. Take your time with this step, because every later result in the book keyword generator depends on it.
Add your readers
Describe who the book is for, such as busy parents or new managers. Readers often type phrases that include themselves, so this makes the results more realistic.
Add tropes or sub-topics
List the tropes, themes or sub-topics that fit the book. These make the phrases more specific and less competitive than broad terms.
Read each phrase with its length
Each result is shown against the 50-character limit that stores such as KDP set. Shorten any phrase that runs over before you paste it.
Copy the ones you want and test them
Use the copy buttons, then type each phrase into the store's search bar to see whether the store suggests it. A suggested phrase is one that people search for.
How the book keyword generator works
Real search patterns, built from your own details
You enter your main topic and your genre, the readers you write for and a list of tropes or sub-topics. The tool combines them in patterns that readers use, such as genre plus trope, trope plus the word books, best genre books for adults, books like a title and topic plus beginners for nonfiction.
Each phrase is shown with its length, and a note says whether it fits within 50 characters, since KDP gives seven keyword fields with a limit for each. You can copy a phrase with one click, and a few of the patterns suggest phrases that you might not have tried.
Check each phrase in the store search box to see whether it suggests the phrase, since that shows real searches. Do not use another author's name, a brand or a claim that you cannot support, and avoid repeating words that are already in your title or categories.
- Patterns for fiction and nonfiction
- A 50 character check for each phrase
- Copy buttons for quick use
Method
How the book keyword generator works out its answer
Fiction patterns
The tool joins your genre, topic and tropes in shapes such as genre plus topic, trope plus genre for readers, best genre books, topic series and books like your topic.
Nonfiction patterns
It builds phrases such as topic guide, topic for beginners, how to topic, topic step by step, topic tips, best topic book, topic workbook and topic strategies.
Length check
Each phrase is counted in characters and marked as fitting if it is 50 characters or fewer, the limit of a KDP keyword field at the time of writing.
Variety and randomness
The tool varies the order and wording of the phrases, so pressing the button again gives a fresh set to choose from.
Tips
Getting the most from the book keyword generator
Check the store's own suggestions
Type your phrase into the search bar and see what the store offers. The suggestions show what readers search for. The book keyword generator is free and instant, so it is worth running again whenever your book changes.
Mix long and short phrases
Short phrases catch broad searches, and long ones catch specific ones. A mix reaches both. Make the book keyword generator a routine step on every project, so that results stay consistent from book to book.
Review each season
Trends and competition change, so look again at your keywords every few months. A few minutes with the book keyword generator now saves time across the whole manuscript.
Need it done for you?
When the book keyword generator is not enough
The generator gives you phrases to try. These services enter them correctly, tune the rest of the metadata and prepare the book around them.
Book Metadata Setup
Metadata setup chooses the keywords, categories and description for each platform, and checks the character limits and the rules.
See the service →Amazon KDP Book Formatting
KDP formatting prepares your files and your book listing so that the keywords you chose are attached to a clean, accepted book.
See the service →Book Landing Page Design
A landing page can use the same phrases in its headings and text, which helps readers and search engines find the book.
See the service →Before and after
Before and after using the book keyword generator
The same book, first with keywords copied from the title and then with phrases that readers really type.
123Before
- 1Seven keywords that repeat the title
- 2Single vague words that bring no readers
- 3Phrases too long for the field
123After
- 1Seven phrases that match real searches
- 2Specific genre and trope phrases
- 3Every phrase within the limit
- 3problems found in the first review
- 3fixes checked in the final review
- 1named specialist owning every fix
- Fixedprice confirmed in the calculator before you order
More relevant searches
Phrases that match what readers type put the book in front of people who want it.
Slots used well
Each keyword field carries a different idea, so none is wasted on words the store already knows.
Clean fields
Every phrase fits the limit, so nothing is cut or rejected.
Client reviews
What authors say about our keyword research service
Verified reviews from authors who asked a specialist to handle the keyword research after using the book keyword generator.
Good publishing support overall. The KDP metadata setup was thorough. One category selection needed updating after initial launch but it was corrected promptly. The book is performing well in its target categories.
My cookbook needed to be set up across multiple platforms simultaneously. The publishing support team handled every submission — KDP, IngramSpark, and Apple Books — with different requirements for each. Flawlessly executed.
The formatting error fix service saved my launch. My original formatter had made margin errors causing repeated rejection. Book Formatting Experts identified and fixed every issue within 48 hours. My launch was back on schedule.
My KDP file was rejected with a technical error message I could not understand. Book Formatting Experts diagnosed the problem immediately — a bleed issue on three pages — and corrected it the same day. Approved first time.
As a first-time author, the technical side of self-publishing was genuinely daunting. The consultation covered every decision — platform choice, pricing strategy, metadata, and distribution. I launched with genuine confidence.
My YA novel needed to reach both English-language and Japanese readers. The multi-region distribution setup was handled correctly across all required platforms. International sales have exceeded my expectations.
Getting historical fiction placed in the right categories on Amazon and IngramSpark required strategic metadata. The team understood the genre classification and the book reached the right readers from the first week.
Navigating IngramSpark's requirements for the first time felt overwhelming. The upload assistance handled everything — metadata, pricing setup, distribution channels. My children's book reached bookstores within two weeks.
Good support throughout the KDP upload process. The metadata setup and category selection were explained clearly. One pricing setting needed adjustment after initial setup but it was corrected quickly.
The publishing readiness review identified four issues in my manuscript that would have caused rejection. Each was clearly explained and quickly resolved. My book launched without any technical complications.
My cover finally looks like it belongs on a bookstore shelf alongside traditionally published titles. The design captures the tone of my book perfectly and my click-through rate on Amazon has increased significantly.
Picture book layout is genuinely a specialist skill. The text placement, illustration bleed areas, and page proportions were all handled perfectly. My printer accepted the files on the first submission.
The atmospheric chapter openings matched the tone of my books without being overdone. The specialist clearly understood what dark fantasy readers expect from a professionally formatted interior.
The cover honours the cultural themes of my book while appealing to an international readership. The imagery, colour palette, and typography choices were all discussed through a genuinely collaborative process.
YA formatting needs to feel energetic but readable. Every chapter felt like an invitation to keep going. The page numbers, headers, and spacing all contributed to a fast, engaging reading experience.
Business books need to feel authoritative while remaining readable. The interior design achieved both. The chapter structure is clear and every table reads cleanly. My corporate clients have all commented favourably.
My author website for children's books needed to be welcoming for both parents and young readers. The colourful, engaging design works perfectly for both audiences. My school visits enquiries have also increased.
Good eBook formatting work. The tables converted cleanly and the navigation works well. One heading level needed a style adjustment but it was corrected quickly. The file performs well on all platforms.
More free tools
More free tools to use with the book keyword generator
Each of these tools is free, runs in your browser and works well alongside the book keyword generator.
BISAC Code Finder
For a keyword research, free bisac code finder that works in your browser, plus a done-for-you BISAC code selection service.
Open the tool →Hashtag Generator
Free hashtag generator that works in your browser, plus a done-for-you social media launch service in this keyword research order.
Open the tool →Book Description Generator
For a keyword research, free book description generator that works in your browser, plus a done-for-you book description rewrite service.
Open the tool →Book Title Generator
Free book title generator that works in your browser, plus a done-for-you title consultation service for the keyword research.
Open the tool →Author Bio Generator
Free author bio generator that works in your browser, plus a done-for-you author bio edit service in this keyword research order.
Open the tool →Book Dedication Generator
Free book dedication generator that works in your browser, plus a done-for-you dedication page service in this keyword research order.
Open the tool →FAQ
Book Keyword Generator: questions answered
These are the questions authors ask most about the book keyword generator, including accuracy, privacy and what to do next. If your question about the keyword research is missing, request a quote and a specialist will reply.
What is a book keyword generator?
It is a tool that builds keyword phrases for your book from your topic, genre, readers and tropes, and checks each against a character limit.
How many keywords can I use on KDP?
At the time of writing, KDP offers seven keyword fields for each book, each with a character limit. Check the current instructions.
What is the character limit for a KDP keyword?
The tool uses 50 characters per phrase, the limit at the time of writing, and marks phrases that are too long.
Should I repeat words from my title?
No. The store already counts words in the title, so repeating them wastes a keyword slot.
Can I use another author's name as a keyword?
No. Platforms forbid using another author's name or a brand name as a keyword.
What makes a good book keyword?
A phrase that a real reader would type, that describes your book accurately and that is not too broad or too long.
What are long-tail keywords?
They are specific, multi-word phrases such as slow burn fantasy romance, which attract fewer searches than a single word but from readers who know what they want.
How do I test a keyword?
Type the phrase into the store's search box and see the suggestions and the books that appear, which shows whether readers search for it and what competes.
Should I use different keywords for ebook and print?
Each format has its own listing on many platforms, and the same phrases often work, so check each listing.
How often should I change my keywords?
Review them every few months, and replace any that do not seem to help.
Does the book keyword generator keep anything that I enter?
No. The book keyword generator works in your browser, so what you enter stays on your device and is never saved.
Is the book keyword generator free?
Yes, the keyword generator costs nothing, needs no account and puts no limit on the phrases you create.
How does a book keyword generator work?
It combines your topic with common reader phrases and shows search-style suggestions.
How to use a book keyword generator?
Enter your topic and genre, press generate and choose the suggestions that fit.
Is there a book keyword generator with examples?
Yes. The page includes a worked example so you can compare it with your own numbers or text. Try a niche topic to see how phrases are built.
Will the book keyword generator give me ideas?
Yes. Run it several times, keep the book keyword generator ideas you like and edit them until they sound like you.
Is this a book keyword generator that uses AI?
Searches for an book keyword generator ai often assume a chat model is involved. This page is a simple generator driven by word lists and rules, so results appear instantly and the same input gives you something you can reproduce.
Work with a specialist
Turn what you learn from the book keyword generator into a finished book
The book keyword generator costs nothing, and so does asking what a specialist would do with your book. When the book keyword generator has done its part and you want finished files, a fixed price and one named person who owns the job, we are ready to start.