About

What this site is

A single-purpose utility: it removes the visible Gemini sparkle — the small four-pointed star Google places in the bottom-right corner of images generated by Gemini, Nano Banana, Nano Banana Pro, Nano Banana 2 and Imagen on consumer tiers.

It does that one job and nothing else. There is no account, no upload, no paid tier and no usage cap.

How it works

The visible watermark is composited onto the finished image as a semi-transparent overlay. Because that overlay's alpha map is known, the pixels underneath can be solved for directly:

original = (watermarked − α × logo) / (1 − α)

This is arithmetic, not AI inpainting. Nothing is repainted, blurred or guessed — the recovered pixels are the ones that were always there. Everything outside the watermark's corner is left byte-identical to your source file, and output is lossless PNG.

The engine is the open-source gemini-watermark-remover (MIT), a JavaScript port of Allen Kuo's original Gemini Watermark Tool. We use it under its licence and credit it here.

Your files never leave your browser

This is not a privacy promise we ask you to take on trust — it is a property of how the site is built. There is no upload endpoint, no database and no server that could receive an image. The engine runs in your browser, on your CPU.

You can verify it: open your browser's developer tools, switch to the Network tab, and process an image. No request carrying your file will appear.

What this tool will not do

It does not remove SynthID. Google embeds that invisible provenance signal during generation rather than compositing it afterwards, so it cannot be reversed without visibly degrading the image. Any tool claiming to strip it losslessly is misleading you. We remove the visible mark only.

It does not touch other generators' watermarks. Marks from Sora, Kling, Runway or stock-photo services use different patterns and are out of scope.

It does not reconstruct a mark that is no longer intact. If an image has been cropped, resized or heavily recompressed, the overlay no longer matches its original geometry. In that case the tool reports that no watermark was found rather than damaging your file.

Not affiliated with Google

Gemini, Nano Banana and Imagen are products of Google. This site is an independent tool and is not affiliated with, endorsed by, or sponsored by Google in any way.