25 Best Nano Banana Prompts for Realistic AI Images (2026)

Nano Banana refers to Google's Gemini image-generation capabilities, rather than a universal prompting technique. The examples below are creative starting points for describing subjects, settings, composition, and light. They can be adapted to other image tools, but the outputs and supported controls will differ. See Google's image-generation documentation for the current capabilities.

These prompts are illustrative briefs, not a benchmark or a guarantee of photographic accuracy. Generate a draft, inspect the details, and revise one instruction at a time. For a separate discussion of character consistency in another tool, see the Midjourney character guide.

Copy a prompt, replace the subject or location with your own idea, and generate an initial image. Then make one change at a time: adjust the lighting, camera angle, wardrobe, background, or aspect ratio. This makes it easier to understand which instruction improved the result.

For portraits and products, describe the important visual details before adding style words. For scenes and landscapes, establish the location, time of day, composition, and light first. If your tool supports image references, use one for composition or character consistency and explain what should be preserved.

A useful image brief identifies the subject, environment, lighting, composition, and intended style. For example, a close portrait needs different framing from a landscape. Decide what matters most before adding decorative detail.

Specific wording can guide a generation, but it does not eliminate uncertainty. Check hands, lettering, object geometry, and resemblance where relevant. Camera and resolution phrases in these templates describe the intended look; they do not guarantee a particular export size or real camera settings.

1. Change the subject: Swap 'Indian man' with any nationality, age, or gender. The lighting and camera settings stay valid for any subject.

2. Change the style anchor: Replace 'hyperrealistic' with 'oil painting', 'watercolor', 'anime', or 'pencil sketch' for completely different results using the same scene setup.

3. Use the controls supported by your chosen tool. If it provides a negative-prompt field, use that field according to its documentation. Do not paste parameters from a different generator and assume they are supported.

4. Adjust resolution and aspect ratio: For YouTube thumbnails use '16:9 aspect ratio'. For Instagram posts use '1:1'. For Pinterest use '2:3 portrait mode'.

5. Iterate fast: Generate 4 variations per prompt, pick the best, then refine. The first output is rarely the final — treat it as a draft.

For Nano Banana, use a Gemini image-generation workflow available to your account. Check the selected model and size or reference-image controls before generating. These prompts do not depend on a paid plan, export resolution, or a particular interface being available to every user.

If you adapt a brief to another generator, preserve the creative intent but translate its settings into that tool's interface. Compare outputs against your actual goal, such as a readable product silhouette or a consistent portrait crop, rather than treating the tool name as a quality guarantee.

Choose one scene, customize it for your subject, and review the result before trying a more complex composition. Keep the exact prompt with the accepted image so you can explain what you changed.

For a useful personal reference collection, save failures as well as successful drafts and note the correction that helped. The goal is a repeatable review process, not a claim that any wording will always produce realistic images.