Amazon Publishing

Kindle Publishing — Publish on Amazon KDP

Amazon Kindle Direct Publishing (KDP) is the world's largest ebook publishing platform, giving indie authors direct access to millions of readers. Publishing on KDP is free, fast, and surprisingly straightforward — once you know the rules. This guide walks you through every step: formatting your manuscript, designing a cover that converts, choosing the right pricing and royalty options, optimizing categories and keywords, launching with impact, and using KDP's analytics to grow your sales. If you have a finished manuscript, this guide will get it on Amazon.

Amazon KDP publishing dashboard showing ebook and paperback publishing tools

Platform Overview

KDP Overview

Kindle Direct Publishing is Amazon's free self-publishing platform. You upload your manuscript and cover, set your price, and within 24-72 hours your book is live on Amazon stores worldwide. No fees, no inventory, no minimum orders. KDP handles printing (for paperbacks) and delivery (for ebooks), and you earn royalties on every sale.

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Why KDP Dominates

KDP accounts for approximately 70% of the US ebook market and over 80% of indie author ebook sales. The platform's dominance comes from Amazon's massive customer base, the Kindle ecosystem (Kindle devices, Kindle app for iOS/Android, Kindle Cloud Reader), and Kindle Unlimited — Amazon's subscription service that pays authors per page read. In 2025, Kindle Unlimited paid out over $500 million to authors and publishers, with indie authors claiming the largest share. For most fiction genres, KDP is not just an option — it is the primary sales channel that makes indie publishing financially viable.

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Global Reach & Localization

KDP distributes to Amazon marketplaces worldwide: US, UK, Germany, France, Italy, Spain, Netherlands, Japan, Brazil, Canada, Mexico, Australia, and India. Your book is automatically available in all territories unless you opt out. Each marketplace has its own currency, pricing, and tax requirements. KDP handles currency conversion and remits royalties in your chosen currency. For non-English books, consider translating your book description and keywords for each marketplace — localized listings consistently outperform auto-translated ones.

Technical Requirements

Formatting Your Manuscript

Proper formatting is essential for a professional-looking ebook. A poorly formatted book — broken paragraphs, missing chapter breaks, weird font rendering — generates negative reviews and returns. Here is what KDP requires and how FictionForge makes it easy.

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KDP Formatting Requirements

KDP accepts several file formats: DOCX, EPUB, HTML, MOBI (legacy), and PDF (for paperbacks only). For ebooks, EPUB is the industry standard and recommended format. Your manuscript needs a clickable table of contents, proper heading styles for chapters, embedded fonts (optional but nice), and clean HTML that renders well on all Kindle devices and the Kindle app. Avoid complex tables, excessive indentation, and manual page breaks. Test your formatted manuscript using Kindle Previewer — Amazon's free tool that shows how your book will look on every Kindle device and app version. Fix any rendering issues before uploading.

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FictionForge Export to MOBI/EPUB

FictionForge's export system generates KDP-ready files with one click. Export EPUB files that pass Amazon's validation checks on the first try. Our formatting engine automatically creates a proper table of contents from your chapter headings, styles chapter titles consistently, embeds your front matter and back matter, and strips out problematic formatting that could cause rendering errors. For paperbacks, export print-ready PDF with your chosen trim size, margins, and page numbering. FictionForge also exports MOBI format for legacy Kindle devices and DOCX for authors who want to do final formatting in Word.

FictionForge KDP export tool showing ebook formatting and publishing workflow

Visual Appeal

Cover Design

Your book cover is the single most important marketing element. Readers judge books by covers — it is how online shopping works. A professional cover can triple your click-through rate compared to an amateur one.

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Amazon Cover Specs

KDP requires a minimum 2560 pixels on the longest side for ebooks, with a recommended 1.6:1 aspect ratio (width:height). For paperbacks, dimensions vary by trim size — KDP's cover calculator generates the exact dimensions. Files must be JPEG or TIFF, minimum 300 DPI. The cover image must include the front cover only (for ebooks) or full wrap including spine and back cover (for paperbacks).

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DIY vs Professional Design

Professional cover designers charge $200-$1,000 per cover and deliver genre-appropriate designs that sell. DIY platforms like Canva and BookBrush offer templates starting at $10-50 but require design skill to make look professional. AI cover generation tools are improving but cannot yet match a human designer's genre knowledge and typography skills. For your first book, invest in a professional cover if your budget allows — it is the highest-ROI marketing dollar you can spend.

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AI-Assisted Cover Creation

FictionForge's AI cover creator generates genre-appropriate cover concepts based on your book's title, genre, and mood. Choose from templates, customize typography, and export directly in KDP-compliant dimensions. While AI covers work well for some genres, readers are increasingly able to spot AI-generated art — consider using AI as a starting point and hiring a designer to refine the final result.

Money Matters

Pricing & Royalties

KDP offers two royalty options. Choosing the right one for your book and pricing strategy directly affects your earnings. Here is how they work and how to decide.

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35% vs 70% Royalty

The 70% royalty option is available for ebooks priced between $2.99 and $9.99. Below $2.99 or above $9.99, you default to 35%. The 70% option deducts delivery costs ($0.15 per MB downloaded) so large files reduce your earnings. For most fiction novels (60,000-100,000 words), delivery costs are $0.05-$0.15 per sale, meaning you net approximately $2.00-$3.00 on a $4.99 book. The 35% option has no delivery cost but pays much less. Strategy: price fiction at $3.99-$5.99 for the 70% royalty tier. Use $0.99 for promotional pricing (35% royalty, but great for ranking).

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KDP Select & Kindle Unlimited

KDP Select is a 90-day exclusivity program. In exchange for making your ebook available only on Amazon, your book is enrolled in Kindle Unlimited (KU) — Amazon's subscription service where readers borrow your book and you earn per page read. KENP (Kindle Edition Normalized Pages) rates vary monthly, typically $0.004-$0.005 per page. A 300-page novel read cover-to-cover earns approximately $1.35 in KU royalties, comparable to a sale. KU page reads now account for the majority of fiction earnings on KDP for enrolled authors. Most genre fiction authors choose KDP Select for the first 90 days, then evaluate going wide.

Discovery

Categories & Keywords

Categories and keywords determine where your book appears in Amazon search results and browse pages. Getting these right is the cheapest and most effective way to increase visibility.

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Choosing Categories

You can select up to two categories when setting up your book in KDP, but you can request additional categories through KDP support (many authors get 5-10 categories added). Choose specific sub-categories where your book can rank — ranking in the top 100 of a niche sub-category drives more sales than ranking #10,000 in a broad category. For example, "Fiction > Fantasy > Romantic Fantasy" is more targeted than "Fiction > Fantasy." Use tools like KDP Rocket or Publisher Rocket to research category competition levels.

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Keyword Optimization & BISAC Codes

You have seven keyword slots of up to 50 characters each in KDP. Use every character. Keywords help Amazon understand what your book is about and match it to customer searches. Include genre terms ("cozy fantasy mystery"), trope terms ("found family," "enemies to lovers"), comp author names ("for fans of Sarah J Maas"), and setting terms ("magical bakery," "fae court"). BISAC codes are standard industry category codes used by distributors — choose the most specific codes for your book. DetailedBooks.com provides a searchable BISAC code database.

Go Live

Launching on Amazon

A successful Amazon launch combines timing, promotions, and advertising. Here are the most effective launch tactics available to KDP authors.

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Pre-Orders

Set up a pre-order up to 90 days before your launch date. Pre-orders accumulate sales that count toward your launch-day ranking, giving you a massive algorithm boost. Amazon requires a completed manuscript before setting up a pre-order, though you can upload the final file up to 5 days before publication.

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Countdown Deals & Free Promotions

KDP Select authors can run Kindle Countdown Deals (discounts that count down over days) and Free Book Promotions (5 free days per 90-day enrollment period). These promotions boost ranking, generate reviews, and introduce new readers to your series. Schedule promotions around new releases for maximum cross-promotion effect.

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Amazon Ads

Amazon Advertising lets you target competitor books, related categories, and specific keywords. Start with automatic targeting to discover which keywords convert, then build manual campaigns around your best performers. A typical fiction campaign targets 20-50 keywords with bids of $0.10-$0.50. Monitor ACOS (Advertising Cost of Sale) and aim for under 50% for profitable campaigns.

Data

KDP Analytics

KDP provides detailed reports on your sales, royalties, KU page reads, and advertising performance. Understanding these metrics is essential for growing your author business.

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Sales Reports

Track daily, weekly, and monthly sales by marketplace. The sales dashboard shows units sold, royalty earnings, and estimated ranking. Use the "Sales by Marketplace" report to identify which territories are performing best. Download historical data for tax preparation and trend analysis.

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KENP Reads

For KDP Select authors, the KENP report shows pages read in Kindle Unlimited. Track reads per day per title, identify which books in your series are getting the most KU attention, and calculate your effective KU royalty rate. A high KENP-to-sale ratio suggests your book works well for the KU audience.

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Author Dashboard

Your KDP author dashboard provides a centralized view of your entire catalog. Access your Author Central page (author bio, photo, blog), manage your Amazon Advertising campaigns, and review your payment history. Check the dashboard weekly to spot trends and adjust your strategy.

Publish on KDP

Publish Your Book on Amazon

You have the manuscript. You have the knowledge. Now you just need the tools to format, export, and launch. FictionForge's KDP-ready export system handles the technical details so you can focus on what matters — writing books that readers love and building a sustainable author career on Amazon.

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Publishing strategy guide · Making money writing fiction · Audience building guide