Gemini Watermark Remover
Remove the Gemini sparkle mark and restore the original pixels. No AI repainting.
- Free
- No sign-up
- Files deleted after 2 hours
Updated
Pixel-accurate restoration
No AI guesswork — stronger watermark detection and reverse alpha blending restore the original pixels under the watermark. No repaint, no blur.
Try it freeImportant
- This tool removes only the visible Gemini sparkle overlay. Google's invisible SynthID watermark stays embedded in the image and is not affected — processed images are still detectable as AI-generated.
- It is tuned exclusively for the Gemini / Nano Banana watermark. It is not a general-purpose watermark remover and will not work on other marks.
- Use it only on images you created and own. You are responsible for complying with Google's terms and any applicable law.
- Algorithm and calibrated alpha maps are based on gemini-watermark-remover & GeminiWatermarkTool — MIT License, © 2025 Jad, © 2024 AllenK.
What is it?
The Gemini watermark is the small four-pointed sparkle that Google Gemini, Nano Banana and Google AI Studio place in the bottom-right corner of generated images. This tool removes it by reversing the alpha blending used to apply it, so the original pixels are recovered rather than repainted. Images are processed on our server and deleted after 2 hours.
How to use
- Drop images on the upload area, press it to browse, or paste with ⌘/Ctrl+V. The counter shows how many of the 20 per session you have used
- The upload area turns into a results view on the same page; each thumbnail shows whether it is processing, done, has no watermark, or failed
- Select a thumbnail and use the Before / After toggle, with the close-up of the watermark corner, to check the result
- Press Download PNG or Copy image, or Download all as ZIP when you have more than one. Press Clear to start a new batch
Frequently asked questions
Is the Gemini Watermark Remover free?
Yes. It is free with no account, no credits and no watermark on the output. You can add up to 20 images per session; press Clear to start another batch.
Why can't I upload more images?
Two limits apply. The page holds 20 images per session, shown by the N / 20 counter, so press Clear to add more. The server also allows 30 images per 10 minutes from one IP address; if you hit that, wait a few minutes and try again.
Are my images uploaded or kept on the server?
Images are uploaded because the removal runs on the server, not in your browser. They sit in a private temporary directory that can't be browsed, are only reachable through a random link that stops working after 2 hours, and are deleted as soon as you press Clear (or automatically after 2 hours). Nothing is added to a database or linked to an account.
Does it remove the SynthID watermark too?
No. It removes only the visible sparkle overlay in the bottom-right corner. Google's invisible SynthID watermark stays in the image, so processed images can still be identified as AI-generated.
How is this different from AI watermark removers?
AI inpainting guesses what belongs under the watermark and repaints it, which can smudge edges or invent detail. This tool reverses the alpha blending equation Google used, so the original pixels are reconstructed rather than estimated.
Will it work on a screenshot of a Gemini image?
Usually not. Screenshots, re-compressed copies and cropped or resized images break the pixel values the calculation relies on, so detection may fail or leave faint edges. Use the file downloaded directly from Gemini.
What image formats are supported?
PNG, JPEG and WebP up to 25MB each. PNG input gives the cleanest result, and output is always a lossless PNG.
Does it work on watermarks from other AI image generators?
No. It is calibrated only for the Gemini and Nano Banana sparkle mark and is not a general-purpose watermark remover.
Can I use it on any image?
Use it only on images you created and own. You are responsible for following Google's terms and any applicable law.