Free · Chrome Extension & Web App · v1.1.0

Build perfect
Nano Banana
prompts in seconds

A step-by-step guided prompt builder for Google's Nano Banana image generator.
Click options, build your prompt — no prompting expertise required.

🧩 Chrome Extension

🧩

Chrome Extension

Lives in your browser toolbar. One click away whenever you need it.

Works on any page, always accessible
Chrome & Edge compatible
No account or login needed
Fully offline capable

↓ Download for Chrome

📱 Web App · PWA

📱

Web App

Save to your home screen on iPhone, Android or desktop. Works like a native app.

Works on iPhone & Android
Install from browser — no App Store
Offline support after first visit
Full-screen native app experience

↗ Open Web App

✓ Free forever ✓ No account needed ✓ Works offline ✓ Based on Google's official guide

labs.google/fx/tools/image-fx

🍌 Nano Banana

PROMPT BUILDER

Mode Subject Action Context Style Lighting ···

What visual style?

🎬 Cinematic

📷 Photorealistic

🎨 Illustration

🌀 Surrealist

Why use it

Everything you need to prompt like a pro

Built on Google's official Nano Banana prompting guide — distilled into a simple click-through experience.

⚡

Guided step-by-step

11 carefully crafted steps take you from a blank canvas to a professional-grade prompt. No prompting knowledge required — just click what you want.

🎯

4 generation modes

Generate from scratch, edit an existing image, add text overlays, or use real-time web data — all covered.

✍️

Live prompt preview

Watch your prompt build in real time as you select options. Copy it with one click.

📖

Based on Google's guide

Every option is sourced from the official Nano Banana prompting guide published by Google Cloud.

📱

Use on any device

Available as a Chrome extension for desktop or as an installable web app on iPhone, Android, and any browser.

🎨

Deep creative control

From lighting and camera lens to color grading, film stock, and finishing extras like lens flare and fog — every parameter that makes a great image is covered.

How it works

From idea to image in 4 steps

Choose your platform

Install the Chrome extension or open the web app on your phone — same experience, any device.

→

Click through the options

Choose your mode, subject, style, lighting and more — all from pre-built cards and chips.

→

Review your prompt

See the assembled prompt in real time. Edit any step or add your own custom text.

→

Generate your image

Copy the prompt and open Nano Banana in one click. Your image is ready.

What's inside

11 steps. Infinite possibilities.

Every step unlocks a new dimension of your image. Skip what you don't need — use what you do.

Mode

Generate, Edit, Text in Image, or Real-Time Data

Subject

Person, product, landscape, animal, character and more

Action

Pose, movement, dynamic energy or close-up

Context

Studio, urban, nature, fantasy, space, underwater

Composition

Rule of thirds, aerial, low angle, POV, symmetry

Style

Cinematic, editorial, 3D render, anime, oil painting

Lighting

Golden hour, neon, chiaroscuro, volumetric, backlit

Camera

DSLR, medium format, macro, tilt-shift, bokeh f/1.4

Color & Film

Teal & orange, Kodak Portra, Fujifilm Velvia, film noir

Text

Headlines, logos, prices, multilingual overlays

Extras

Film grain, vignette, lens flare, fog, rain, particles

Get started

Two ways to use it

Pick the option that works best for you — both are free and work offline.

Download the ZIP file below
Unzip it into any folder
Open Chrome → chrome://extensions/
Enable Developer mode (top right)
Click "Load unpacked" → select the folder
The 🍌 icon appears in your toolbar — you're done!

Download nano-banana-extension.zip

Free · No account · Works on Chrome & Edge

ANDROID / CHROME

Add to Home Screen

Open the web app → tap the ⋮ menu → Add to Home Screen → Install

IPHONE / SAFARI

Add to Home Screen

Open in Safari → tap the Share button → Add to Home Screen → Add

DESKTOP / CHROME

Install as App

Open the web app → click the ⊕ install icon in the address bar → Install

DESKTOP / EDGE