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Popular Free KDP Tools

• Paperback Royalty Calculator
• eBook Royalty Calculator
• Print Cost Calculator
• Spine Width Calculator
• KENP Calculator
• Amazon Sales Estimator
• ISBN Generator
• Copyright Page Generator
• Book Title Generator
• Pen Name Generator
• Character Name Generator
• Readability Calculator
• Keyword Density Analyzer
• Backend Keywords Extractor
• Sudoku Generator
• Word Search Generator
• Maze Generator
• PDF Compressor
• Background Remover
• Photo to Line Art

Premium AI Tools

• AI Book Writer
• AI Image Generator
• AI Coloring Book Generator
• AI Audiobook Generator
• AI Image Colorizer
• AI Sketch Enhancer
• KDP Book Tracker
• Review Intelligence

KDP Guides & Tutorials (49 articles)

AI Writing

• How to Write & Publish a Nonfiction Book With AI in a Weekend (2026)

Coloring Books

• Custom Prompt Coloring Books: Get Exactly the Pages You Want (2026)
• How to Make AI Coloring Books That Actually Stay On-Theme (2026 Guide)

Design

• 10 KDP Book Cover Design Tips That Actually Boost Sales (2026)

Guides

• Print vs eBook Royalties on KDP: Which Actually Pays More? (2026)
• The Complete KDP Book Launch Checklist (2026)
• Amazon BSR Explained for KDP Authors (2026)
• How to Make Sudoku Books for Amazon KDP (2026 Beginner Guide)
• How to Make Word Search Books for Amazon KDP (2026 Step-by-Step)
• KDP Trim Sizes Explained: How to Choose the Right Book Size (2026)
• How to Do Proper KDP Keyword Research in 2026 – Free Tools & Strategy
• How to Create and Sell Medium Content Books on Amazon KDP (2026 Guide)
• Amazon KDP vs IngramSpark: Which Is Better for Self-Publishers in 2026?
• How to Self-Publish a Book on Amazon KDP in 2026 — Complete Step-by-Step Guide
• How to Format a Book for Amazon KDP — Avoid These Rejection Mistakes (2026)
• Low-Content Book Ideas with AI — 20 Profitable Ideas You Can Create Today
• KDP Rejection Reasons & How to Fix Them — Complete 2026 Guide
• Free vs Paid KDP Tools Comparison — What Do You Actually Need? (2026)
• Best Free KDP Tools in 2026 — Complete Guide for Self-Publishers
• KDP Spine Width Formula — How to Calculate It for Any Paper Type (2026)
• Kindle Unlimited KENP Royalties — How Much You Actually Earn Per Page (2026)

Marketing

• Amazon A+ Content for Books That Actually Converts (2026 Guide)
• Amazon Ads for KDP Books: The Complete Beginner's Guide (2026)
• How to Get Your First 10 Amazon Book Reviews (Legitimate Methods Only — 2026)
• How to Write an Amazon Book Description That Actually Sells (With Examples)
• How to Rank Higher on Amazon Search — KDP SEO Guide (2026)

Niche Research

• August 2026 KDP Niche Report — Back-to-School & the Q4 Head Start
• 20 Trending Coloring Book Niches for 2026 (Real Search Data)
• Summer 2026 KDP Niche Report — What's Selling This July
• Summer 2026 KDP Niches That Actually Sell — Data-Backed Guide
• Best KDP Niches February 2026 — Profitable Low-Content Book Ideas

SEO

• KDP Metadata & Categories: How to Get Your Book Found in 2026

Strategy

• Reverse Coloring Books: The Fresh Niche Trending in 2026
• AI Coloring Books as Passive Income — A Realistic 2026 Playbook
• KDP Taxes for Self-Publishers in 2026 – What You Need to Know (US, EU, International)
• How to Scale Your KDP Business to 50+ Books in 2026 – Proven Strategy
• KDP Select vs Wide Publishing: Which Is Right for Your Book? (2026)
• KDP Book Pricing Strategy: How to Maximize Your Royalties in 2026

Tools

• Best AI Tools to Generate Book Interiors for KDP in 2026 (Free & Paid)

Tutorials

• Kids Coloring Books on Amazon KDP: The Complete 2026 Guide
• How to Make a Coloring Book With ChatGPT & AI (2026 Step-by-Step)
• Cozy Coloring Books: The Breakout 2026 Trend (And How to Make One)
• How to Write & Publish a Children's Book on Amazon KDP (2026 Complete Guide)
• How to Create & Sell Coloring Books on Amazon KDP (2026 Step-by-Step)
• How to Delete Pages from a Word Document — 5 Methods That Actually Work (2026)
• How to Make Puzzle Books for Amazon KDP with AI (2026 Guide)
• How to Convert DOCX to KPF, EPUB & MOBI for Amazon KDP (2026)

Writing

• How to Write AI Books Without Repetition or Filler (2026 Guide)

Writing & AI

• Turn Your Life Story Into a Book With AI — A Step-by-Step Guide

KDP Tools is a free, AI-powered platform helping self-publishers succeed on Amazon Kindle Direct Publishing. We offer 50+ tools including royalty calculators, keyword research, book cover design, AI book writers, niche research, and more — all built specifically for KDP authors.