Features
Everything you need to go from a book idea to a validated export — and nothing that hides what the AI is actually doing.
Projects built for books
Title, theme, audience, complexity, page count target, US Letter or A4, portrait or landscape, and intended use — set once per project.
Monochrome style presets
Silhouette, outline, ornamental and pattern presets, each with its own prompt template, validation thresholds and preview.
Bring your own AI key
Your OpenRouter key is encrypted at rest, never shown again, never logged, and never replaced by a hidden fallback key.
Queued generation
Jobs are queued with concurrency limits, timeouts and automatic retries with backoff. See status, errors and provider-reported cost when available.
Automated quality checks
Dimensions, file integrity, white background, gray and color contamination, black coverage, tiny specks, contrast, blank regions, cut-off and margins.
Real image editing
Crop, rotate, fit to page, brightness/contrast, grayscale and threshold are applied server-side to new versions. Originals are preserved.
Book builder
Reorder pages, add title, copyright and blank pages, set margins and page numbering, preview the whole document.
Exports with preflight
PDFs at exact US Letter or A4 page size with consistent margins and verified effective DPI, plus PNG, ZIP and a JSON manifest.
Your data stays yours
Download images, PDFs and a JSON export of your account data at any time, including after a refund.
Style presets
Solid black silhouette shapes containing white fillable detail areas. Different from outline pages: large areas are filled black.
Uniform black outlines on a white background. Classic coloring-page style with open white regions to color.
Detailed black-and-white ornamental artwork with fine decorative linework for experienced colorists.
Bold geometric or repeating decorative patterns with strong black/white contrast.
Upgrades
Optional upgrades add capabilities for later stages of your workflow.
Monochrome Quality Studio
Clean up inconsistent pages in batches instead of one by one
Coloring Book Publisher
Assemble and validate complete books for each publishing destination
Etsy Listing Launch Kit
Turn a finished printable into a listing-ready product package
Creator Workflow Automation
Stop repeating the same setup for every new collection
Commercial Production Workspace
Run large, repeatable collections with consistent quality