Nano Banana Pro Prompt Builder — Gemini 3 Pro Image

Nano Banana Pro is the first image model where "put the words on the poster" reliably produces readable words. Long passages, 24 languages, right-to-left layouts. It also grounds images in real-world data, preserves identity across five subjects, and edits one region without touching the rest. Almost nobody prompts for any of it.

This builder does. It is a Google Sheets template — open it, click Make a copy, and it is yours forever. No subscription, no software to install.

How it works

1. Open your copy of the builder
2. Fill Column D using the dropdown menus — 32 fields across 6 sections
3. Type your subject and the exact wording you want rendered
4. Five complete prompts appear instantly on the right
5. Paste into the Gemini app, Google AI Studio or the Gemini API

The 5 prompts you get every time

• Main Nano Banana Pro Prompt — full structured prompt using all 32 fields
• Text and Multilingual Brief — exact wording, 24 languages, right-to-left layout handling, long passage structure and legibility rules
• Camera and Lighting Control — angle, focal length, depth of field, lighting setup, colour grade and surface material
• Identity and Multi Subject — up to 5 subjects with identity locked, upload order and blending control
• Localized Edit Prompt — change one region only, adjust light or focus, fix lettering without regenerating the artwork

What Pro does that other image models cannot

• Search grounding — name a real landmark, product or process and get factual geometry rather than an impression. There is also a creative-freedom setting, because grounding constrains stylised work.
• Text that survives — long multi-block passages and multilingual layouts, not just a two-word slogan.
• Five subjects, one identity each — the practical limit, and the builder says so rather than letting you find out.
• Surgical editing — change a region, adjust lighting or focus, or correct text without a full regeneration.
• 2K and 4K output with flexible aspect ratios and print-ready resolutions.

Right-to-left layouts, handled properly

Arabic and Hebrew do not just need translated text — the entire layout has to mirror. Get that wrong and the design reads backwards to a native speaker. The text brief states it explicitly, every time. Twenty-four languages are covered, including four bilingual pairings.

Built to keep you honest about accuracy

Google itself warns that the model can misinterpret data in infographics and still miss on spelling and small faces. So this builder includes a Verification Note field and an Accuracy Priority field. Every relevant output ends with a check step. A tool that helps you publish confidently wrong numbers is not a good tool.

Also included

• Design Presets tab — 10 ready-made setups: Explainer Infographic, Product Mockup, Multilingual Poster, Recipe Card, Comparison Chart, Science Diagram and more
• Nano Pro Library tab — model guide, text rendering rules, grounding notes, identity and editing tips
• Image Log tab — track every generation by model, output type, language, takes and verification status
• Formula Lock — only the input column is editable, so the tool cannot break by accident

Which builder do you need?

If you mostly generate social graphics, mockups and everyday visuals at speed, our Nano Banana 2 Prompt Builder is the better fit at a lower price. Choose this Pro edition when you need long or multilingual text, factual grounding, multi-subject identity, or surgical edits.

For designs where the words are the entire product — slogan tees, quote prints, book covers — see our GPT Image 2 Prompt Builder.

Browse the full AI Image Prompt Builders collection.

What you receive

Instant download. A one-page PDF with your access link — click it and your own copy saves to Google Drive. Licensed for personal and commercial use, so the images you create are yours to sell.

Works with: Nano Banana Pro · Gemini 3 Pro Image · Gemini 3.1 Flash Image · Nano Banana 2 — via the Gemini app, Google AI Studio, Vertex AI or the Gemini API.

Requires a free Google account. Gemini access is not included. Digital product — no physical item is shipped.