The single biggest factor in removing a Gemini watermark isn't which tool you pick. It's what sits underneath the star logo. A watermark on flat sky comes off cleanly in seconds. The same watermark over someone's hair or a line of text is a different job entirely. So before you reach for any method, look at what's behind the mark.
This post is organized around that idea. Find the situation that matches your image, then use the method that fits it. Most of what follows is free, and a couple of the options run online with nothing to install. One quick rule first: only edit images you own, made, or have permission to change.
First, know what you're dealing with
Gemini stamps a small star logo onto the images it generates, usually in a corner. The model behind it (sometimes called Nano Banana) adds this as a visible mark on the final picture.
Two things are happening under the hood. One is the logo you can see. The other is SynthID, an invisible signal Google bakes into the pixels to flag the image as AI-made. Editing out the visible star does nothing to the hidden signal. Keep that distinction in mind, because "I removed the watermark" only ever refers to the part your eyes can see.
With that out of the way, here are the common situations.
Situation 1: The logo sits in a corner you don't need
Plenty of Gemini images put the star in a corner where nothing important is happening. When that's true, you don't need software at all. Trim the edge.
Cropping costs you a sliver of resolution and a bit of the frame, but it's instant and leaves zero artifacts. Open the file in whatever you already have, drag the crop boundary past the logo, and export. Mac Preview, Windows Photos, or any phone gallery app can do this.
Skip cropping if the composition needs that corner, or if the logo is sitting somewhere central rather than at the edge.
Situation 2: The logo covers something you want to keep
Here's where it gets harder. When the star overlaps a face, a product, text, or a busy pattern, cropping would take the good parts with it. Now you need to rebuild what's behind the logo.
Photoshop's content-aware fill is the usual pick. Select the watermark, run Edit then Content-Aware Fill, and it samples nearby pixels to patch the gap. GIMP can do the same for free using the resynthesizer plugin, though setup takes longer. Either way, a plain background fills in convincingly. A detailed one might need a few passes with the clone stamp to hide the seam.
Be realistic about the tradeoff. This method gives you the most control, but it asks for time and a little skill, and a complicated background will never patch perfectly.
Situation 3: You have a stack of images, or no time to edit
Manual editing falls apart fast when you're looking at 15 images instead of one. That's the case a purpose-built tool handles better.
Gemini Watermark Remover is a free option made specifically for removing the Gemini star logo. The flow is short: upload, let it process, download the cleaned PNG. No account, no credits. Because it's tuned for this one watermark rather than every kind, the rest of the image usually stays close to the original.
Worth knowing if you go this route:
- Processing runs in your browser, so the files aren't sent off to a server. Useful when the images belong to a client.
- A batch can hold up to 20 images, which is the whole point when you're cleaning a set.
- It takes PNG, JPG, JPEG, and WebP, and gives back high-resolution PNGs.
You can also use it for a single image, of course. It just earns its keep most when there's a pile of them.
What about removing it from a video?
If you generated a clip rather than a still, the problem changes. A Gemini watermark on video sits on every frame, so you can't just patch one spot. Your realistic options are cropping the frame down (same logic as a still image, applied to the whole clip in a video editor) or masking the corner across the timeline, which most editors like DaVinci Resolve or CapCut can do.
Image tools, including the one above, work on stills only. For video you're in editor territory, and the same honesty applies: a logo over a busy moving background is hard to hide cleanly.
Matching the method to the image
Think of it as three questions. Is the logo in a spare corner? Crop it. Is it sitting over something you can't lose, and are you handy in an editor? Content-aware fill. Are there several images, or do you just want it handled? Run them through the free tool.
None of these promise a flawless patch on a detailed background. What's behind the star sets the ceiling, and no method clears it. Treat that as the honest limit rather than a tool failure.
