The Editor
Generating Panels
Each panel cell on your page is an illustrated scene. You write a description, the AI validates it, then generates the image. The whole process is asynchronous — you can work on other panels while one is generating.
Opening a panel
Click any empty panel on the canvas. The Scene Description drawer opens on the right side. This is where you write what happens in the panel.
Clicking a panel that already has an image also opens the drawer, showing the existing scene description. You can edit and regenerate it.
Writing the scene description
Write a description of what you want the panel to show — setting, action, mood, camera angle, lighting. Be specific and visual. Think of it like a director's note to an illustrator.
Good scene descriptions
Elena crouches on the rain-slicked rooftop at night, looking down at the alley below. Neon signs reflect in the puddles. Low angle, fog in the background.Close-up of Captain Volt's face, jaw clenched, eyes wide. Dramatic side lighting from the left. His glowing eyes pierce the darkness.Wide establishing shot of the Iron Throne Room, empty and imposing. Shafts of light fall from high windows onto the stone floor. Grand and ominous atmosphere.Useful scene description elements
Include: who is in the scene (by character name), where (setting, time of day), what's happening (action or mood), and how it looks (camera angle, lighting, close-up vs wide). More detail = more accurate output.
Characters and props in scenes
Write character and prop names directly in your scene description. Type / in the description field to open the mention dropdown — it shows up to 6 characters and 4 props. Select one to insert the exact name.
When your scene is validated, the AI matches names against your defined characters and props, then injects their reference sheets into the image prompt automatically.
Uploading a sketch or draft
If you have a rough sketch of what you want the panel to look like — even a quick pencil drawing — you can upload it as a draft. The AI analyzes the composition and can extract a scene description from it, or use it to inform the layout.
- In the Scene Description drawer, click Upload Draft
- Select a PNG or JPG image
- The AI analyzes the composition and offers to fill in (or add to) your scene description
- Accept, merge, or dismiss — then generate as normal
Scene validation
When you click Generate, the scene text is first sent to an AI validator (Claude) before image generation begins. Validation checks:
- Scene clarity and coherence
- Character and prop name matching against your story's defined assets
- Whether the scene contains dialogue (see Dialogue)
- Content policy compliance
If validation passes, image generation starts immediately. If something is wrong, you'll see a message explaining what to fix.
Automatic quality check
Every panel image YarnSaga generates is reviewed by AI the instant it lands — checking that the right characters are present, that anatomy is intact, and that the result actually matches your scene. If something is off, the system quietly generates a fresh version for free before you ever see the broken one.
You don't have to click anything to trigger it. You don't pay for the retry. Most of the time you won't even know it happened — you just see the better result. On the rare occasion both attempts come back with issues, the panel is flagged so you can decide what to do.
It's a safety net, not a guarantee
Quality check catches the obvious failures — wrong characters, broken anatomy, content that has nothing to do with your scene. It won't catch subtle stylistic preferences (lighting choice, exact pose), since those are matters of taste. For those, just regenerate.
Panel states
Every panel is in one of these states:
- Empty — no scene yet. Shows a placeholder. Click to add a scene.
- Processing — scene validated, image is generating. Shows a spinner. You can't click it while processing — work on other panels instead.
- Completed — image is ready and displayed. Click to view or edit the scene.
- Error — generation failed. Shows a red indicator. Click to retry.
Regenerating a panel
Click any completed panel to open the Scene Description drawer. Edit the text (or leave it the same) and click Generate. A new image is generated — each generation is unique even with the same description.
You can regenerate as many times as you want. The previous image is replaced when the new one arrives.
Small tweaks for big differences
If the generated image is almost right, try adding or changing a specific detail in the description — camera angle, lighting, character pose, or setting detail. Small changes can significantly shift the output.
Retrying a stuck panel
Image generation normally completes within 30–90 seconds. If a panel has been in "processing" state for more than 5 minutes, a Retry button appears. Click it to re-submit the generation request.
Image quality setting
In Settings, you can set image quality to 1K (1024px, faster) or 2K (2048px, higher detail, slower generation). This applies to all new panel generations. Previously generated panels keep their original resolution.
Use 1K during drafting and layout work. Switch to 2K for final generation when you're happy with the compositions.