Nano Banana upscaler
Nothing is uploaded
Level 1
Your picture, up to 4x bigger and sharper
Real result from this tool. Sample made with Nano Banana, reduced to 672 x 384, then enhanced 4x.
Your level and badges
Level 1, with 0.0 MP gained. 5 MP reaches the next level. It's all kept in this browser.
- First clearFinish your first pictureNot earned yet
- Tile tapperTap 5 tiles in one runNot earned yet
- 4K clubMake a picture 3840 pixels wide or moreNot earned yet
- Rank SSharpen a soft picture by 60% or moreNot earned yet
- Second windSend a finished picture through againNot earned yet
- Both modesFinish one Photo and one Art pictureNot earned yet
- CollectorFinish pictures from 4 different AI toolsNot earned yet
- 100 MPGain 100 megapixels in totalNot earned yet
Take a Nano Banana or Gemini image past 4K. The AI runs on your own device, so nothing is uploaded, and there are no credits to buy.
What size are Nano Banana images?
It depends on the model and the setting. According to Google's documentation, Nano Banana 2.1, Nano Banana 2 and Nano Banana Pro offer 1K, 2K and 4K tiers, Nano Banana 2 also has a 512 px tier, and Nano Banana 2 Lite only offers 1K.
The original Nano Banana is smaller. We asked it for a 16:9 image and got 1344 x 768 pixels, which is about 1 megapixel. That image is the sample on this page, reduced to 672 x 384 so you can see a clear change.
| Starting size | At 2x | At 4x |
|---|---|---|
| 1024 x 1024 | 2048 x 2048 | 4096 x 4096 |
| 1344 x 768 | 2688 x 1536 | 5376 x 3072 |
| 512 x 512 | 1024 x 1024 | 2048 x 2048 |
When to upscale a Nano Banana image
You already have the picture you want. Generating it again at 4K gives you a new image, which may differ, and it costs a higher-tier request. An upscaler keeps your picture as it is.
You made it at 1K. Images from the original model, or from the Gemini app at a low setting, are around 1 megapixel.
You only have a shared copy. Pictures saved from chats and social apps are often reduced and compressed. Upscaling can't bring back what's gone, but it removes much of the blockiness.
Getting the best result
Use the original download where you can. Choose Photo for realistic images, and Art for cartoons, stickers and flat illustrations. For a very soft image, try 2x first, then send the result through again if your device has room.
Frequently asked questions
Does Google have a Nano Banana upscaler?
Google offers larger tiers when you generate a new image. This tool is different: it enlarges an image you already have, and it isn't made by or connected with Google.
Does this remove the Gemini watermark?
No. A visible mark stays in the picture and gets enlarged with everything else. To remove the sparkle first, use the Gemini watermark remover. Google also says all generated images carry an invisible SynthID watermark, which stays either way.
Is Nano Banana the same as Gemini?
Nano Banana is the popular name for Google's Gemini image models, so an image made with Gemini's image tools is usually a Nano Banana image. The upscaler treats any image the same way.
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