How Multi-Image Input Transforms AI Image Generation
The Multi-Image Advantage
Most AI image generators work with text alone. Nano Banana 2 goes further — it accepts up to 14 reference images alongside your text prompt, fundamentally changing what's possible.
Instead of hoping the AI interprets your words correctly, you show it exactly what you mean.
Core Use Cases
1. Character Consistency Across a Project
One of the hardest challenges in AI image generation is maintaining a consistent character appearance across multiple images. With multi-image input, you can provide 3–5 reference shots of your character and the model will extrapolate their appearance into new scenes.
Workflow:
- Generate an initial character image you're happy with
- Save it as your character reference
- On subsequent generations, attach the reference image and describe the new scene
- The model preserves face, build, clothing style, and color palette
2. Style Transfer and Blending
Upload images representing the visual style you want — a painting, a film still, a photograph — and Nano Banana 2 will merge that aesthetic into your new generation.
Example: Combine a 1950s vintage travel poster with a modern cityscape reference to create retro-futuristic travel imagery.
3. Product Mockups and Compositing
Upload your product on a neutral background, then reference lifestyle photos showing the environment you want it placed in. The model composites them intelligently.
4. Brand Asset Creation
Provide your brand's color palette (as color swatch screenshots), typography samples, and existing marketing materials. Nano Banana 2 will generate new assets that align with your established visual identity.
Best Practices for Multi-Image Input
- Use high-quality references: Blurry or low-resolution inputs produce inconsistent outputs
- Mix angles: For character consistency, include front, side, and three-quarter views
- Limit conflicting signals: Too many visually diverse references can confuse the model — keep a coherent theme
- Combine with a clear prompt: Your text prompt steers intent; the images lock in visual style
- File formats: JPEG, PNG, and WEBP all work — keep each file under 30MB
How Many References Should You Use?
| Goal | Recommended Number of References |
|---|---|
| Style reference only | 1–3 |
| Character consistency | 3–5 |
| Complex compositing | 5–8 |
| Style + character + environment | 8–12 |
More isn't always better — 3 highly relevant images will outperform 14 loosely related ones.