Remove the diamond watermark from your Gemini and Nano Banana AI-generated images in seconds. Free Nano Banana watermark remover — no upload, no signup, no cost.
Drop your Gemini image here
PNG, JPG, WebP · Up to 20MB
Your images never leave your device. All processing happens locally in your browser — we never see or store your files.
Our Reverse Alpha Blending algorithm mathematically reconstructs the original pixels. Zero quality loss, pixel-perfect results.
Watermark removal takes milliseconds, not minutes. No waiting for server processing — results appear immediately.
Optionally upscale your image to 2x print resolution using Clarity AI, a leading AI upscaler. Just $2.
Drag and drop your Gemini-generated image or click to select it.
Our algorithm detects and removes the diamond watermark in milliseconds.
Get your clean image free, or upgrade to HD print resolution for $2.
We run Obooko, an online book community, and use Gemini to generate book cover concepts. The watermark drove us mad — cropping, editing, trying to paste over it every single time. So we built this tool for ourselves and figured we'd share it with everyone else who has the same problem.
If you find it useful, the HD upscale option helps us keep the lights on. 🍌
We use a mathematically precise Reverse Alpha Blending algorithm to reconstruct the original pixel values under the watermark. This is not AI guessing — it's an exact reversal of how Gemini applied the watermark in the first place. The result is lossless and visually identical to the original image without the diamond logo.
No. All watermark removal processing happens 100% in your browser using JavaScript. Your images never leave your device. We don't see, store, or transmit your images at any point during the free watermark removal process.
This tool removes the visible diamond watermark only. Google also embeds an invisible SynthID watermark in the pixel data of Gemini images. Our tool does not attempt to remove SynthID — it targets only the visible logo that appears in the corner of your images.
Yes — this works with images generated by Gemini (including Nano Banana / Imagen) that have the standard diamond watermark. It automatically detects whether your image uses the 48x48 or 96x96 watermark variant and processes it accordingly.
Yes. Nano Banana is Google's latest AI image generation model (integrated into Gemini), and it applies the exact same diamond watermark as previous versions. Our tool is a Nano Banana watermark remover as well as a Gemini watermark remover — the algorithm is identical because the watermark is identical. Upload your Nano Banana image and it will be processed exactly like any other Gemini image.
After removing the watermark, you can optionally upgrade your image to 2x resolution using Clarity AI, a leading AI upscaler. This is ideal for printing, presentations, book covers, and any professional use where you need higher resolution. The cost is a one-time $2 per image.
This tool is designed for removing watermarks from your own AI-generated images — content you created by prompting Gemini yourself. Please do not use this tool to remove watermarks from copyrighted material belonging to others. See our Terms & Conditions for full details.
PNG, JPG/JPEG, and WebP formats are all supported. The output is always a high-quality PNG to preserve image fidelity.
Most general watermark removers use AI inpainting which guesses what should be under the watermark. Our tool uses the exact mathematical inverse of Gemini's watermark algorithm — meaning zero quality loss and pixel-perfect results. We're also the only tool offering an AI upscale to print resolution.