How to Remove the Gemini AI Watermark in 2026 (For Free)

Google Gemini is an incredible image generation tool, but every image it outputs comes with a visible, semi-transparent star logo in the bottom right corner. If you are using these images for presentations, design mockups, or personal projects, that watermark can be incredibly distracting.

In this guide, we'll cover exactly how to remove the Gemini watermark cleanly, instantly, and for free using Unmark.

Why Does Gemini Add a Watermark?

Google adds two types of watermarks to its AI-generated images:

• SynthID: An invisible, cryptographic watermark hidden in the noise of the image.
• The Star Logo: A visible, semi-transparent logo in the corner.

While you cannot (and shouldn't) remove the invisible SynthID, the visible star logo is often removed by creators to make the image usable in professional settings.

How Unmark Removes the Logo

Unlike Photoshop's Content-Aware Fill or other AI inpainting tools that guess what the pixels behind the logo should look like (often resulting in smudged artifacts), Unmark uses pure math.

Because the Gemini logo is applied via Alpha Blending with a known opacity, Unmark uses the Reverse Alpha Blending formula to perfectly reconstruct the original pixels. The result is mathematically identical to what the AI generated before the logo was stamped on top.

If you want the technical version, read our guide on why inpainting fails on Gemini watermarks.

Step-by-Step Guide

1. Generate your image in Google Gemini and click the Download button. You will get a .png file.
2. Head over to the Unmark homepage.
3. Drag and drop your downloaded PNG file into the drop zone.
4. Download the result! Our tool runs entirely in your local browser, meaning your image never needs to upload to our servers. Within milliseconds, the original image is restored.

We allow free users to process up to 5 images every single day, without even creating an account.

What This Removes and What It Does Not

Unmark is designed for the visible Gemini star logo. It does not claim to remove Google's invisible watermarking systems. If you are not sure about that distinction, read Google SynthID vs visible watermarks.

Best Input Format

PNG files usually give the cleanest and most predictable result because they preserve the visible overlay better than heavy recompression. If you are comparing exports, our format guide on Gemini PNG vs JPEG vs WebP covers the tradeoffs.

Happy generating!