Gemini Watermark Remover

Remove the Gemini ★ watermark from your AI images — free, online, and processed locally in your browser. No upload, no sign-up. Works on Gemini, Nano Banana and Google AI Studio images.

Your image never leaves this tab. There is no upload, no server, and no account — open your network tab and watch.

How to remove a Gemini watermark

1. Add your image

   Drop in a PNG, JPG or WebP straight from Gemini. Batch and video support are on the way.

2. Let it find the watermark

   The sparkle is composited onto the image as a semi-transparent overlay. The tool locates it and reconstructs the pixels it was covering.

3. Download the clean image

   Save a lossless PNG. Only the watermark region is altered — the rest is bit-for-bit your original.

What this tool does — and what it doesn't

There are two different watermarks on a Gemini image. The visible sparkle in the corner is a cosmetic overlay, and that is what this tool removes.SynthID is an invisible provenance signal Google embeds in every generated image, and this tool deliberately leaves it alone.

That distinction matters. Google itself already ships watermark-free images to AI Ultra subscribers, so a clean visual canvas is not the controversial part. Passing AI work off as human-made is — and stripping SynthID is what that would take. This tool won't do it. Use it on images you generated yourself.

Open source

The removal engine is MIT-licensed and public: reverse alpha blending when the overlay template is known, diffusion inpainting when it isn't. There is also agwr CLI for batch-cleaning a folder of images.Read the code on GitHub — it is the same engine running on this page.

Frequently asked questions

Does this remove SynthID?

No — and it never will. This removes the visible sparkle overlay only. Google's invisible SynthID provenance watermark stays in the file. Removing the visible mark gives you a clean canvas; it does not disguise the image as human-made.

Is it really free? Do I need to sign up?

Free, with no account and no sign-up. The image is processed by JavaScript in your own browser, so there is no server cost to pass on to you and no upload to consent to.

Does Google AI Pro or Ultra remove the Gemini watermark?

Since March 2026, Google AI Ultra subscribers and Google AI Studio users get images without the visible watermark. Free-tier and Google AI Pro users still get the sparkle. This tool gives you the same clean output without changing plans.

Can it remove watermarks from Gemini videos or MP4 files?

Not yet — the browser tool handles images today. Per-frame video removal is in development, and the open-source CLI on GitHub is where it will land first.

Does it work on Nano Banana images?

Yes. Nano Banana is the community name for Gemini’s image model, and its images carry the same visible sparkle. The same goes for images labelled Gemini Omni or generated in Google AI Studio.

Will it reduce my image quality?

Only the watermark region is touched — every other pixel passes through untouched, and the result is saved as a lossless PNG. Inside that small region the tool reconstructs what was behind the overlay.