JSON Prompt Template for Defining Canvas Size
A JSON template and an example prompt demonstrating how to specify resolution and aspect ratio (canvas size) for image generation in Nano Banana Pro to ensure consistent output dimensions.
- Prompt included
- Model and format preset
- Free template
The prompt behind this image
Copy the exact prompt behind JSON Prompt Template for Defining Canvas Size, or open it in the studio and make it yours.
- Scene
- futuristic AI workspace with holographic screens showing code
- Resolution
- 4K
- Aspect Ratio
- 16:9
- Style
- cinematic lighting, cyberpunk aesthetic, ultra-detailed
Raw JSON
{
"scene": "futuristic AI workspace with holographic screens showing code",
"resolution": "4K",
"aspect_ratio": "16:9",
"style": "cinematic lighting, cyberpunk aesthetic, ultra-detailed"
}How to use JSON Prompt Template for Defining Canvas Size in 3 steps
- 1
Open
The prompt is already in the box next to the preview, with the template's model and format selected.
- 2…a portrait of your subject in softgolden-hour light, 85mm…
Personalize
Edit the subject and creative details for your destination.
- 3Generate
Generate
Press Generate — your image is created in PicX Studio, so you can compare it with the original and refine one variable at a time.
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Make it yours
JSON Prompt Template for Defining Canvas Size works as-is. These are the safest ways to change it without losing the look.
Change one field
Copy a single group, rewrite it, and generate again so you can see what that field is doing.
Keep the frame, change the subject
Hold the composition and light of JSON Prompt Template for Defining Canvas Size, then swap wardrobe, props or the person for a new take.
| If the result… | Why | Fix |
|---|---|---|
| The result drifts from the preview | Too many fields changed at once. | Reuse JSON Prompt Template for Defining Canvas Size as-is first, then change one group — subject, light, or setting. |
| Nano Banana 2 ignores part of the JSON | Some models flatten or skip nested keys. | Keep the same values and paste them as a short paragraph instead. |
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JSON Prompt Template for Defining Canvas Size questions
How do I use the JSON Prompt Template for Defining Canvas Size template?
Add your photo if the template asks for one, edit the prompt if you like — the template's model and format are already selected — and press Generate. Your version opens in PicX Studio.
Can I customize the JSON Prompt Template for Defining Canvas Size template?
Yes. You can change the subject, setting, lighting, mood, format, and available model controls before creating your image.
Is the JSON Prompt Template for Defining Canvas Size template free?
Opening and editing this template is free. Generating uses credits, shown on the Generate button when you are signed in.
Which AI model should I use?
Start with Nano Banana 2, which is the model associated with this template. You can compare another compatible model for a different finish.
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