Learn Gemini image generation
Images made and edited in a Gemini chat: Imagen for generation, a native Gemini image model for edits that keep your subject. How to prompt and iterate.
What Gemini is good at
- Quick illustrations and photo-style images from a chat prompt
- Conversational edits that keep the same person or product
- Combining several uploaded images into one scene
- Images carry a SynthID watermark for provenance
Quickstart
- Ask in plain languageDescribe subject, setting, style and framing in a sentence or two; Gemini expands it.
- Upload to editAttach a photo and say what to change. The native image model keeps what you did not mention.
- Iterate in one threadEach follow-up builds on the last image, so stay in the conversation for a set.
- Save the prompt with the fileDownloads lose the chat. Keep the final wording and the thread link with every image you use.
Settings cheat-sheet
| Setting | What it does | Start with |
|---|---|---|
| Shape | Square, portrait or landscape | Match the placement |
| Reference images | Upload one or more to edit or combine | One clean reference |
| Follow-up edits | Describe only the change | One change per message |
| Style words | Photo, illustration, 3D, flat | Name the medium first |
| Watermark | SynthID, always on | Nothing to set |
Gemini guides
Guides for Gemini are on their way. The quickstart and cheat-sheet above are kept current in the meantime.
The five most-asked questions
Which image model does Gemini use?
Gemini generates with Google's Imagen models and edits with a native Gemini image model (nicknamed Nano Banana in 2025) that keeps subjects consistent across edits. The model names in the interface change with releases.
Can Gemini edit my own photos?
Yes. Upload a photo and describe the change, such as a new background or outfit, and it regenerates the image while keeping the subject. Check faces and text after each edit.
Are Gemini images watermarked?
Yes, generated and edited images carry an invisible SynthID watermark that Google's tools can detect. It does not change how the image looks.
Which sizes and ratios are available?
You can ask for square, portrait or landscape; exact pixel sizes depend on the model and plan. Check Google's help pages for the current limits.
Can I use Gemini images commercially?
Google's terms for your plan govern that; many business uses are allowed, but read the current generative AI terms and keep a record of the prompt and date for each image you deliver.