Free tool, no sign-up
Free Nano Banana Prompt Generator
Pick a subject, style, light and camera, or describe a photo edit, and get a prompt written the way Nano Banana follows best.
This Nano Banana prompt generator turns a few choices into a complete prompt for Google’s Nano Banana image models. It follows the structure that works best: the subject first, then the setting, light and camera for new images, and “change this, keep that” for edits of your own photos.
Describe a subject above (or press Surprise me) and your prompt appears here.
How to use the prompt generator
- 1
Choose new image or edit
Pick New image to describe a picture from scratch, or Edit my photo to write an edit instruction.
- 2
Fill in the parts
Add a subject and setting, then pick a style, lighting and camera. For edits, describe the change and what to keep.
- 3
Copy or generate
Copy the prompt into Gemini or any Nano Banana app, or press Generate to open it in the studio.
Why the prompts are built this way
Nano Banana reads a prompt like an instruction from a person, so full sentences beat lists of keywords. The generator always names the subject first, adds the setting, then the light and the camera or style, which are the details that change a result the most.
For edits, it writes the change first and then the list of things to keep, because naming what must stay the same is what stops faces and backgrounds from drifting. Text you add is put in quotes and marked “spelled exactly”, which helps the model render it cleanly. The full reasoning is in the Nano Banana prompt guide.
Prompt generator FAQ
Is the Nano Banana prompt generator free?
Yes. It runs in your browser with no sign-up and no limit. You only need an account to generate the image itself.
Does the prompt generator use AI?
No. It assembles your prompt instantly from your choices, using the structure Nano Banana follows best: subject, setting, light, then camera or style, and change-then-keep for edits. Signed-in users can also use Enhance with AI inside the studio.
Do the prompts work in the Gemini app?
Yes. They are plain-language prompts that work anywhere Nano Banana runs, including the Gemini app and Google AI Studio.
Which model should I use the prompt with?
The generator suggests one: Nano Banana 2 for most images, and Nano Banana Pro when the image contains a lot of text.