Free Publishing Tools
Professional tools to help you create and publish better books
Book Image Size Calculator
Calculate the exact image dimensions, DPI, and file format requirements for your book. Get specifications for both print and eBook formats. Works for all major publishing platforms.
KDP Cover Template Generator
Generate KDP-ready cover templates with spine width calculations, bleed guides, and safe zones. Download PNG/JPG templates and create AI background images.
AI Prompt Helper
Transform vague illustration ideas into polished, detailed prompts optimized for AI image generation. Based on Gemini 3 Pro Image best practices.
Book Formatter
Format your print books for publishing. Add text, customize fonts and margins, and export print-ready PDFs with proper formatting. Works for all major publishing platforms.
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