Kdp Keywords
KDP keywords are search terms you enter in Amazon's backend to help your book appear for relevant searches on the site.
Key facts
- KDP keywords are entered in seven separate fields, each with a 50-character limit.
- They are part of the book's backend metadata, not the visible title or description.
- You can update keywords without uploading a new manuscript.
- Many practitioners recommend using all seven slots.
- Amazon does not publicly disclose how it ranks or weights keyword fields.
Also called
Amazon KDP keywords, KDP backend keywords, Amazon book keywords
Use it for
Improving a book's discoverability in Amazon search results.
Applies to
Amazon
How KDP Keywords Work in Amazon Search
When you publish a book on Amazon KDP, you can enter keywords in the backend. These are not visible to shoppers. They help Amazon match your book to search queries.
Amazon's search algorithm uses these keywords alongside the title, subtitle, and categories. The exact weight of each factor is not public. Most practitioners treat keyword fields as a significant signal, but no one outside Amazon knows for sure.
You have seven keyword slots per book format. Each slot can hold up to 50 characters, including spaces. You can enter a single phrase or multiple phrases separated by commas. Amazon recommends using commas to separate distinct terms.
- Enter keywords for each format separately (ebook, paperback, hardcover).
- Use terms that describe the book's topic, audience, genre, or niche.
- Longer, more specific phrases can match narrower searches.
Common Mistakes with KDP Keywords
Many authors waste keyword space. Here are three frequent errors and their consequences.
- Stuffing fields with repeated words or irrelevant phrases: wastes limited space and can reduce relevance.
- Leaving keyword slots empty: reduces the number of search terms Amazon may associate with the book.
- Using terms that do not match the book's actual content: leads to poor visibility or weak conversion when the wrong readers click through.
How to Research KDP Keywords
You can research keywords by typing terms into the Amazon search bar and noting the autocomplete suggestions. These reflect real shopper queries.
Look at competing books in your niche. Check their titles, subtitles, and descriptions for relevant phrases. You can also use third-party tools, but Amazon does not endorse any of them.
For more on general keyword research, see Keyword Research. For understanding how keywords work across search engines, see how keyword works.
- Check Amazon search suggestions for your topic.
- Review competing books for common phrases.
- Use a spreadsheet to track candidate keywords.
KDP Keywords vs. Other Ecommerce SEO
KDP keywords are specific to Amazon's platform. They differ from Ecommerce SEO for other sites, where you optimise product pages for Google or Bing.
Amazon's search algorithm is proprietary. Unlike Google, Amazon does not publish guidelines for keyword use. This makes KDP keyword strategy more experimental.
For other industry-specific SEO approaches, see cre search engine optimization. For real estate SEO, see how real estate seo works. For senior living SEO, see Senior Living Search Engine Optimization.
Long-Tail Keywords and KDP
Long-tail keywords are longer, more specific phrases. They often have lower search volume but higher conversion rates. For KDP, they can help your book appear for niche searches.
For example, instead of "cooking", use "vegan gluten-free dessert recipes for beginners". This matches a specific shopper intent.
For more on this concept, see long-tail keywords. For understanding search volume metrics, see keyword msv.
Common mistakes
- Stuffing fields with repeated words or irrelevant phrases Wastes limited space and can reduce relevance.
- Leaving keyword slots empty Reduces the number of search terms Amazon may associate with the book.
- Using terms that do not match the book's actual content Leads to poor visibility or weak conversion when the wrong readers click through.
Questions
What is the best KDP keyword research tool?
There is no single best tool. Many authors use Amazon's own search suggestions. Third-party tools like KDP Rocket or Publisher Rocket are popular, but Amazon does not endorse them. The most reliable method is to test keywords yourself and monitor your book's performance.
How many characters are allowed per KDP keyword field?
Each of the seven fields allows up to 50 characters, including spaces. You can separate multiple terms with commas.
Can I update my KDP keywords after publishing?
Yes, you can change your KDP keywords at any time without uploading a new manuscript. Go to your KDP Bookshelf, click 'Edit Details' for the book, and update the keywords in the 'Keywords' section.
See also
- SEO Keyword ToolAn SEO keyword tool is software that helps you find and evaluate search terms people use, so yo…
- Keywords EverywhereKeywords Everywhere is a browser extension that shows keyword metrics like search volume direct…
- Keyword DifficultyKeyword difficulty is a metric that estimates how hard it is to rank for a search query, typica…
- Primary KeywordsA primary keyword is the main search term a webpage is built to rank for, matching the page's c…
- Keyword StuffingKeyword stuffing is the unnatural overuse of keywords in page content or elements to try to man…
- Google Keyword PlannerGoogle Keyword Planner is a free tool inside Google Ads that shows search volume estimates and …
Sources
- Google Search Central developers.google.com
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