Have a video with a watermark? Try the video watermark remover
Only edit images you created or have permission to change. The visible mark is removed; SynthID is not.
Nano Banana on your phone
Most Nano Banana images are made in the Gemini app, so here is the quickest phone workflow.
Best results
- In the Gemini app, open the image and use the download or save option to keep the original file.
- Open this page, tap "Choose images" and pick the saved image.
- Tap "Save image" to open your share menu and save the clean copy to your gallery.
Screenshots
- A screenshot shrinks the image and moves the mark away from the corner.
- Imaginoa still searches the whole picture, but if the mark is missed, tap "Select the mark" and tap the sparkle.
- For the cleanest result, use the original download whenever you can.
Three steps, zero waiting
No queues, no servers, no account. Your browser does the work in about a second per image.
Honest about what it does
Imaginoa is built for cleaning up your own AI images for thumbnails, slides and posts.
It does
- Remove the visible sparkle from Gemini and Nano Banana images, both the older and the newer mark.
- Keep your resolution and format. PNG stays PNG, JPG stays JPG.
- Let you paint over leftovers with Brush fix.
- Keep working offline once the page has loaded.
It doesn't
- Touch SynthID, Google's invisible watermark. The image can still be identified as AI-made.
- Upload, store or look at your files.
- Remove watermarks from stock photos or other people's work. Please don't use it for that.
Questions people ask
Still stuck? Try Zoom to corner and the strength slider first. It fixes most leftovers.
Is Nano Banana the same as Gemini?
Nano Banana is the name commonly used for Gemini's image model, so its images carry the same visible sparkle mark. This tool removes both the older and the newer version of that mark.
Can I clean many images at once?
Yes. Add as many as you like and download them together as a ZIP.
Does it work on iPhone and Android?
Yes, in any modern browser. "Save image" opens your share menu so you can save to your gallery.
Does it remove SynthID?
No. Only the visible mark is removed. SynthID, Google's invisible watermark, stays in the image.
Are my images uploaded?
No. They are processed on your own device and never sent anywhere.