Frequently Asked Questions
Everything you need to know about Gemini Watermark Remover and Gemini Watermark Cleaner
What is the Gemini watermark?
Google Gemini adds a subtle watermark to AI-generated images to indicate they were created by AI. It is applied using alpha compositing and appears as a semi-transparent overlay. CleanMark reverses this process mathematically to restore the original image.
What is the Nano Banana watermark?
The Nano Banana watermark is a variant used by Google AI Studio (aistudio.google.com). CleanMark detects and removes both the standard Gemini watermark and the Nano Banana watermark pattern automatically.
How does the watermark removal work?
CleanMark uses a reverse alpha blending algorithm. Since the Gemini watermark is applied with a known mathematical formula, we can reverse it exactly — recovering original pixel values in milliseconds without any AI inference.
Is CleanMark really free?
Yes, completely free. No account, no subscription, no usage limits. The Chrome extension and online tool are both free forever.
Is my image data safe?
All processing happens locally in your browser using JavaScript and WebAssembly. Your images are never uploaded to any server. Zero bytes of image data leave your device.
What browsers are supported?
The Chrome extension supports Google Chrome version 113 and above. The online tool works in any modern browser without installation.
Does it work on Google AI Studio?
Yes. CleanMark works automatically on both gemini.google.com and aistudio.google.com.
The watermark still appears after processing. Why?
Some images may have multiple watermark layers. CleanMark removes the overlay watermark applied during download. If a watermark is embedded directly into the image pixels, it requires the online tool with manual processing.
How often is CleanMark updated?
We release updates regularly to maintain compatibility with Gemini and AI Studio changes, improve detection accuracy, and add new features. Updates are applied automatically via the Chrome Web Store.
I still have questions. How can I get help?
Visit our Contact page or open an issue on GitHub. We typically respond within 24 hours.
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