What Is the "Nano Banana" Watermark?
The community nickname behind the small watermark on Gemini-generated images, explained.
Published 2026-08-24
If you've generated an image with Google's Gemini and noticed a small icon watermark in one corner, you may have also seen it called a "Nano Banana" watermark online. Here's what that actually means.
Where the name comes from
"Nano Banana" is the nickname the community gave to the image-generation model that powers Gemini's image features, back when it was being tested anonymously on public model-comparison leaderboards. The name stuck even after Google confirmed the model was theirs and folded it into Gemini — so you'll see both "Gemini watermark" and "Nano Banana watermark" used for the exact same mark.
Why the watermark exists
The visible icon is a quick, human-readable signal that an image was AI-generated — separate from SynthID, Google's invisible, cryptographic provenance signal embedded in the image data itself. The visible icon can be removed with an image editor; SynthID can't, since it isn't a visual element.
Removing it
If you need a clean copy of an image you generated — for a portfolio, a client deck, a product mockup — you can run it through our Nano Banana Watermark Remover. It's free, works online, and doesn't require an account.