KDP 7-Keyword Builder
Optimize your Amazon metadata with validated, high-intent keyword phrases. Our builder runs real-time rule checks to ensure your backend keywords follow KDP's strict quality guidelines.
1. Metadata Context
2. The Seven Keyword Boxes
KDP Rule Checklist
- Max Chars / Box50
- No Competitor NamesPolicy
- No "Best" or "Free"Policy
- No Repeats from TitleLogic
- Natural Phrases OnlySearch
Pro Tip: Don't repeat words. If "Fantasy" is in your title, you don't need it in your keywords. Use that space for "Dragon Rider" or "Quest."
How to Build Better Keywords
- Input your Core Metadata: Start by entering your title and genre. Our tool uses this to filter out redundant words.
- Identify Tropes & Setting: Amazon readers search for "Vampire Romance" or "Victorian London" more often than generic terms.
- Use the Suggestions: Click the generated pills to fill your 7 boxes with 50-character optimized strings.
- Check for "Rule Breaks": Red flags will appear if you use forbidden words (like "Free" or competitor names) or if you repeat words from your title.
The Science of the 7 Boxes
Amazon's A9 algorithm treats the 7 backend keyword boxes as supplemental metadata. They are designed to catch search queries that your title and description didn't cover.
Each box allows 50 characters. By using full phrases (e.g., "fast-paced psychological thriller") instead of single words, you increase the number of combinations your book can rank for.
Frequently Asked Questions
Should I use commas between keywords?
No. Amazon recommends using spaces only. Commas take up valuable character space and don't improve search indexing.
Can I use other authors' names?
Using competitor names or brand names in backend keywords is a violation of KDP policy and can lead to account suspension.