Strip the Gemini, Imagen, and Nano Banana sparkle watermark from any image — automatically, losslessly, in your browser. No upload, no signup, pixel-perfect output.
Open the image toolWhat it removes
Every AI-generated image from Gemini, Imagen, or Nano Banana ships with a small four-point sparkle logo in the bottom-right corner. The detector on this page finds it automatically — at either the legacy 48×48 size or the newer 96×96 size used by Gemini 2.0 Flash and later — then reverses the alpha-blend equation Google used to stamp it. The result is byte-identical to the original outside the watermark zone, with no AI inpainting guesswork and no quality loss.
Lossless export. Best for screenshots and high-quality work.
Compressed exports from Gemini. Output stays at original quality.
Modern web formats and animated exports.
How it works
Click the upload zone or drag a file in. Anything PNG, JPG, WEBP, or GIF works at any resolution.
Normalized cross-correlation scans the bottom-right corner to find the sparkle. The 48×48 and 96×96 alpha maps are baked into the page so detection takes milliseconds.
For every pixel under the watermark, the original value is recovered with original = (pixel - α × 255) / (1 - α). Edge diffusion smooths the seam.
Click Download to save the cleaned PNG. Original resolution, original quality, original filename prefix cleaned-.
The watermark removal pipeline runs entirely in your browser using the Canvas API. The image is read into memory, processed, and written to a downloadable blob — no server, no upload, no third party. Even the alpha masks are bundled with the page, so there is no remote fetch at any point. This is the same browser-only architecture used by tools like removewatermarkgemini.com, but it stays free without quotas, signups, or watermarks of its own.
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