AI made for picture books
Lumi keeps your story, visual references, storyboards, image candidates, and exports inside one local project. AI helps you move forward; you still decide how the story is told and which version stays.
Available for Apple Silicon Macs and Windows x64 · AI features require a model provider
From spark to storybook
Work manually at every step or ask AI for a first pass. Generated content never becomes the final choice for you.
Begin with one sentence, then define the hero, wish, obstacle, and change.
Write, import, or generate chapters while keeping earlier versions available.
Organize characters, places, props, and the overall art direction for reuse.
Turn prose into editable visual beats and tune framing, action, and rhythm.
Bring premise references into generation and choose from saved candidates.
Read the chapter as a sequence, then export one chapter or the whole project as an original-image ZIP or A4 PDF.
Five picture-book formats
Choose the narrative form that fits your project. Lumi then applies the matching page structure, canvas rules, and generation prompts.
Pair one dominant illustration with a small amount of story text so words and images carry the narrative together.
Let actions, expressions, and scene changes carry the whole story, with every page speaking through images.
Place one concise, age-appropriate question or instruction on each page so children can join the story.
Use multiple panels, speech bubbles, and continuous action to move the plot forward at a tighter pace.
Use a fixed 1:3 canvas so shots and story beats unfold in one continuous top-to-bottom flow.
One connected workspace
One story, not scattered context
Write by hand, import an existing draft, continue with AI, or plan several chapters without repeatedly moving context between chat and documents.
A consistent visual world
Keep the visual foundation of the book in the Premise workspace. Upload existing art or generate references, then reuse them in later scenes.
Every frame remains editable
Each visual beat has its own storyboard and image candidates. Fix the storytelling first, generate the frame, and choose another version without rebuilding the chapter.
Experiments do not erase the past
Lumi keeps history for prose, storyboards, images, and prompts. Background work and the current project state return after a refresh or reopen.
Two ways to begin
Both paths end in the same editable workspace. There is no locked, one-click final book.
Enter a minimal story idea and let Lumi prepare the story, profile, references, storyboard, and first image before you refine them.
Best for families and creators who want to see the shape of a story quicklyStart with an empty project or an existing draft and decide exactly when to write, import, generate, and accept a result.
Best for creators with a clear idea or a step-by-step processLocal first
Each picture book lives in a folder you choose. Move it, copy it, or back it up as a unit. Lumi remembers recent locations but does not upload the complete project to a Lumi cloud.
FAQ
Yes. Start by describing the protagonist, goal, and change. Lumi can draft the story, premise, and storyboard, while you choose, edit, and regenerate the result.
Current desktop builds support Apple Silicon Macs and Windows x64. The installation guide covers downloads, checksums, and the system prompts you may see on first launch.
Lumi currently connects to Alibaba Cloud Model Studio or Cloudflare AI Gateway. Provider usage may be billed by that provider; Lumi does not resell model usage.
The project stays in a local folder you choose, including STORY.md, the project database, images, and required internal files. Back up or move the folder as one unit.
Edit the story or storyboard, generate another image, switch candidates, and preview or restore history where the workspace supports it. A new attempt does not need to erase the last one.
Lumi
Download Lumi and begin with one idea—or take ten minutes to follow the first-picture-book guide.