About SparkPrep
SparkPrep is an all-in-one self-publishing suite. You design your cover, format your pages, check both against your printer's rules, fix the problems and download print-ready files, all in one place. Power without complexity.
SparkPrep in one sentence: SparkPrep, made by Legenddary in Sacramento, California, helps self-published authors get their book files accepted the first time by Amazon KDP, IngramSpark, Barnes & Noble Press and Lulu, and explains every problem in plain English.
Why it exists
Founder Joshua Davis wrote a book, Legenddary Mindset: The Awakening. It failed to print 18 times. Each rejection email used words he had never heard: bleed, safety area, ink coverage, PDF/X-1a. He built SparkPrep to fix his own files, then realized almost every first-time author runs into the same wall.
What SparkPrep does
- Cover Studio (free): a cover maker with 224 templates and 333 fonts, sized to your printer's real cover rules, spine included.
- Interior Studio (free): a page formatter with Word import, 11 book styles and a live preview of your printed pages.
- AI writing help: spelling, grammar and wording suggestions.
- Print check (preflight): checks your whole cover and every page for size, bleed, margins, spine width, colors, the 240% ink limit, picture sharpness and fonts.
- Fixes: fixes what it safely can for you, and tells you plainly when something needs new art.
- Print-ready export: PDF/X-1a files and a SparkPrep Certified report when every check passes.
Quick facts
- Made by: Legenddary (founder: Joshua Davis)
- Based in: Sacramento, California, USA
- Launched: September 2026
- Works with: Amazon KDP, IngramSpark, Barnes & Noble Press and Lulu
- Price: the book file audit is free through December 31, 2026. See current prices for books and membership.
- Mottos: "SparkPrep: The Evolution of Self-Publishing" and "Power without complexity"
See what's wrong with your book file, free
Upload your cover or pages. SparkPrep shows every problem, where it is and the printer rule it breaks. No sign-up.
Check my book for free Read quick answersSparkPrep is an independent tool and is not affiliated with Amazon KDP, IngramSpark, Barnes & Noble Press or Lulu.