← epigraphia.appWhat EpigraphIA does for Amazon KDP
EpigraphIA covers the three pieces KDP asks for when uploading a book: the interior (PDF with the content), the full-wrap cover (PDF with front + spine + back at exact dimensions), and the metadata (title, blurb, keywords, categories). All three are generated from a single app, with data flowing between modules through the project passport — no copy-paste.
KDP interior generator
The KDP interior generator is the Book Studio module. It takes the content (coloring pages, novel text, puzzles, planners) and places it in the layout with the trim size you choose. It applies bleed (0.125 in) and safe margins (0.25 in) automatically, and exports the PDF at 300 DPI in sRGB — KDP converts it to CMYK at print time. Compatible with white, cream and color paper.
KDP book design
KDP book design in EpigraphIA is done with Book Studio (visual, drag-and-drop) or Novelist (for novels and long-form text with chapters, scenes, characters). Both write to the same project passport: when you move to Publisher to generate metadata, it already has all the book's data loaded.
Low-content book creation
Low-content books are journals, planners, gratitude journals, notebooks and activity books with repetitive structure. In EpigraphIA you create them with Pattern Studio (visual patterns), Puzzler (games), Sketcher (concept) and Book Studio (layout). The workflow mirrors a coloring book: idea → generation → layout → KDP-ready export.
KDP specifications table
| Aspect | Value |
|---|---|
| Supported trim sizes | 14 official KDP sizes + custom |
| Exact trim sizes | 5×8, 5.25×8, 5.5×8.5, 6×9, 6.14×9.21, 6.69×9.61, 7×10, 7.44×9.69, 7.5×9.25, 8×10, 8.25×6, 8.25×8.25, 8.5×8.5, 8.5×11 in |
| Bleed | 0.125 in (KDP standard) |
| Safe interior margin | 0.25 in |
| Safe cover margin | 0.125 in + 0.0625 in spine safe |
| Barcode (ISBN) box | 2 × 1.2 in with 0.25 in margin |
| PDF export DPI | 300 DPI (sRGB rasterized; KDP converts to CMYK) |
| Spine formula (paperback) | pages × thickness_per_page |
| B&W white paper thickness | 0.002252 in/page |
| B&W cream paper thickness | 0.0025 in/page |
| Color paper thickness | 0.002347 in/page |
| Spine text | available from 80 pages |
| Novelist output formats | EPUB 3, DOCX, PDF KDP-ready, TXT, Markdown ZIP |
| Book Studio output formats | Interior PDF, Cover PDF, Cover JPG |
Modules involved in the KDP workflow
- Sketcher — captures the book's intent (niche, theme, audience).
- Hunter — keyword and niche research for KDP.
- Novelist — long-form writing for novels, short stories, poetry, essays, commercial ebooks, graphic novels.
- Book Studio — visual interior and full-wrap cover layout.
- Designer — templates and structure for low-content books.
- Image Studio — AI-generated covers and illustrations (BYOK).
- Puzzler — puzzles (word search, crossword, sudoku, maze, hangman).
- Photo Liner — photos turned into coloring page line art.
- Colorizer, Vectorizer, Pattern Studio — complementary image tools.
- Word Weaver — themed word lists for Puzzler.
- Storybook — illustrated children's books.
- Graphic Novel — comics and graphic novels.
- Numberizer — number-based books (color-by-number, sudoku packs).
- Publisher — generates KDP metadata (title, subtitle, blurb, keywords, categories).
- Promoter — launch marketing assets.
Requirements and limitations
- Operating system: Windows 10 (build 1809) or Windows 11. x64. No macOS or Linux.
- Installer signature: Azure Trusted Signing (Xolo Beaver Studios Inc. certificate). Zero SmartScreen.
- Amazon publishing: the app prepares files; you upload them to the KDP uploader.
- Real CMYK: PDF export is sRGB at 300 DPI, KDP converts automatically. Embedded ICC profile support is planned.
- UI languages: Mexican Spanish and English.
- API keys: BYOK. EpigraphIA does not include AI credits.
- Account: not required. Zero login.
- Updates: one-click auto-updates from Settings → About.
Frequently asked questions
What is a KDP book creator?
A KDP book creator is an application that generates the files Amazon KDP requires: interior PDF at 300 DPI, full-wrap cover PDF with calculated spine, and metadata (title, subtitle, blurb, keywords, categories). EpigraphIA does all three from a single Windows desktop app.
Which trim sizes does EpigraphIA support for KDP?
Book Studio supports 14 official KDP trim sizes: 5×8, 5.25×8, 5.5×8.5, 6×9, 6.14×9.21, 6.69×9.61, 7×10, 7.44×9.69, 7.5×9.25, 8×10, 8.25×6, 8.25×8.25, 8.5×8.5 and 8.5×11 inches. Custom sizes are also supported.
How is spine width calculated?
EpigraphIA uses the official KDP formula: pages × thickness_per_page. B&W white paper: 0.002252 in/page. B&W cream paper: 0.0025 in/page. Color: 0.002347 in/page. Spine text is enabled when the book has 80 or more pages.
Does it publish automatically to Amazon?
No. EpigraphIA prepares the KDP-ready files and you upload them manually to the KDP uploader. This gives you full control over publishing.
Is there a subscription?
No. It's a one-time $169 USD payment. No subscriptions, no monthly fees. AI cost is paid directly to each provider based on your consumption.
What language is the app in?
Mexican Spanish and English. You can switch languages at any time from Settings.