Improve your book sales

on Amazon

The All-in-One Toolset to Increase Your Book Sales on Amazon.

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The Most Powerful Tools in the Space

Everything you need for success on Amazon KDP

Niche Research
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Discover dozens of high-performing niches in seconds. Filter through

  • millions of books on Amazon.
  • Real-time BSR analysis
  • Sales and royalty data
Book Tracking
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Track any book on Amazon. Monitor rankings, revenue, and reviews.

  • Competitor monitoring
  • Automatic alerts
Keyword Research
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Get detailed analysis of keyword demand and competition directly from Amazon.

  • Direct Amazon data
  • Listing optimization

Trusted by 30,000+ Authors
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Reviews from real paying users

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“Ninja Publisher provides unique data that other tools don’t have!

Marco R.
Self-Publishing Author

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“If you want to take your publishing business to the next level, I highly recommend trying Ninja Publisher.”

Laura G.
Bestselling Author

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“Ninja Publisher is a complete keyword research tool for KDP publishers. I use it every day!”

Giovanni A.
Professional Publisher

Accessible through all devices

Use NinjaPublisher on your computer, tablet or phone!

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Unlock Access to Best Sellers

Choose a paid plan to access the full list of best sellers and discover winning strategies

Top-Performing Books

Access the books with the best sales performance on Amazon KDP

In-Depth Analysis

Study BSR, reviews, pricing, and strategies of the most successful books

Find Profitable Niches

Identify patterns and niches that generate consistent sales

Winning Strategies

Learn from the strategies used by books that dominate the Amazon rankings

Start Today

Sign up for Ninja Publisher and access the most powerful toolset for self-publishing authors.
It’s risk-free with our 7-day money-back guarantee.