Removing a different watermark
The tool above knows the Gemini watermark by heart. It can also learn a watermark it has never seen — any see-through logo that sits in the same spot on every picture, from any tool.
Add 3 or more pictures that share the same watermark (more is better — around 20 gives the sharpest result). Because the logo stays put while the pictures underneath differ, it can be told apart from your content and then removed the same exact way, restoring what was underneath rather than blurring it. As always, nothing is uploaded.
Why Nano Banana images carry the Gemini mark
Nano Banana is the nickname that stuck to Google's Gemini image model, and the name spread far faster than the official one. What matters here is that its output is Gemini output: the same four-point sparkle in the bottom-right corner, at the same fixed position and size.
So there is no separate Nano Banana watermark to deal with. The measurements this tool uses were taken from real Gemini image files, and they apply directly. Drop a Nano Banana picture in and the corner is restored the same way it would be for anything else from Gemini, Imagen or AI Studio.
What you get
- The detail underneath comes back rather than being blurred or invented — which matters most when the sparkle lands on a face, a product or lettering.
- Nothing is uploaded, so unpublished work stays private.
- Free with no limits, and no watermark of ours in exchange.
- Clean files are left alone. If the sparkle is not there, your image comes back byte for byte as you gave it.
Before you start
Use the original download rather than a screenshot, and remove the watermark before cropping or exporting to JPEG. If you are working with video from Veo or Flow instead, use the video watermark remover. And keep in mind what stays: the invisible SynthID mark is still in the file, so this cleans up appearance, not provenance — see the watermark guide.
Editing and re-generating with Nano Banana
Nano Banana is used as much for editing as for generating from scratch — feeding a picture back in to change a background, swap an object or extend a scene. Each of those passes produces a fresh file with a fresh corner sparkle, so a picture that has been through several rounds still arrives watermarked. Clean it at the end of the chain rather than after every step: each intermediate save is another re-compression, and the removal is most exact on a file that has not been through extra encoding.
If a Nano Banana image comes back with "no watermark found", it has almost always been cropped or resized somewhere along the way, which moves the mark out of the position the tool checks. Going back to the untouched download resolves it.
How the removal works
Most watermark removers guess. They erase the area and ask an AI model to paint something plausible into the hole, which is why results so often look smeared, or invent detail that was never there. This tool does something different: it undoes the watermark instead of covering it up.
The sparkle is a semi-transparent layer blended over your picture, so every watermarked pixel is a fixed mix of two things — the logo, and whatever was underneath. Because the logo is identical in every Gemini file, that mix can be measured once and then reversed, pixel by pixel, to recover the original colour. The result is the detail that was actually behind the logo, not a plausible imitation of it.
Why that matters for quality
- Nothing outside the corner is touched. The rest of your image is passed through unchanged, so there is no global quality loss.
- No blur, no smearing. Textures, edges and text under the logo come back as they were.
- It refuses to guess. If the Gemini sparkle is not actually present, the file is returned exactly as you gave it, rather than having an odd bright patch stamped into the corner.
Files that were re-saved or re-compressed after watermarking — a JPEG export, a screenshot, or any video frame — no longer hold the exact original values, so a light extra pass tidies the logo's soft edge in those cases.
Nano Banana questions
Is the Nano Banana watermark the same as Gemini's?
Yes — Nano Banana is Google's Gemini image model, so its pictures carry the same four-point corner sparkle and are handled the same way.
Does it work on edited Nano Banana images?
It works best before you edit. Cropping or resizing moves and softens the mark, so remove it first and edit afterwards.
Does the invisible watermark go too?
No. SynthID stays in Nano Banana output just as it does in any other Gemini file, so the image remains identifiable as AI-generated.