How to Remove the Nano Banana Watermark in Google AI Studio with One Click

Photo of author
by Levi Scott
Last Updated:
3 MIN READ

Using the Nano Banana model in Google AI Studio is fun until you notice every generated image has a Gemini star logo watermark in the bottom right corner. You then have to open another editor just to crop or erase it. That is unnecessary.

The important part. the watermark is not part of the real image. It is not generated by Nano Banana. It is only an overlay added by the AI Studio frontend when it displays the image in your browser.

That also means you do not need to “remove” the watermark from the image file. You only need to stop the browser from loading the watermark overlay. Once you do that, the preview and the downloaded image are clean.

If you already saved an image where the watermark is baked into the pixels, use the Free Unlimited Gemini Watermark Remover to remove it directly in your browser.
how to remove nano banana watermark

How AI Studio applies the Nano Banana watermark

When you generate an image with Nano Banana, Google AI Studio first gets the raw image from the model. That raw image is clean. Then on the client side, the website loads a watermark PNG and draws it over the image.

The logo file is served from a fixed URL:

https://www.gstatic.com/aistudio/watermark/watermark_v4.png

So the process is basically.

  1. Model generates a clean image
  2. Frontend loads watermark_v4.png
  3. Frontend overlays that PNG in the corner

If the browser never loads that PNG, there is nothing to overlay. The result you see is the clean underlying image.

So the core idea is simple. block requests that contain watermark.

Nano Banana one click watermark removal via Bookmarklet

A bookmarklet is just a browser bookmark where the “URL” is JavaScript. You click it. the script runs on the current page.

This solution uses a bookmarklet that hooks into network functions and prevents any watermark image from loading. It also shows a small toast to confirm that watermark blocking is active.

Step by step. create the bookmarklet

  1. Create a new bookmark
  2. Set the name to something like Remove Gemini Watermark
  3. In the URL field, paste the following code and save

Here is the one line code snippet in bookmarklet form.

Bookmarklet Code Snippet

javascript:(function(){const o=XMLHttpRequest.prototype.open;XMLHttpRequest.prototype.open=function(m,u){if(u.includes("watermark"))return console.log("🚫 Blocked:",u);return o.apply(this,arguments)};const f=window.fetch;window.fetch=function(u,...a){if(typeof u==="string"&&u.includes("watermark"))return console.log("🚫 Blocked fetch:",u),new Promise(()=>{});return f.apply(this,arguments)};Object.defineProperty(Image.prototype,"src",{set(v){if(v.includes("watermark"))return console.log("🚫 Blocked IMG:",v);this.setAttribute("src",v)}});const n=document.createElement("div");n.textContent="✅ Watermark blocking active!";Object.assign(n.style,{position:"fixed",top:"20px",left:"50%",transform:"translateX(-50%)",background:"rgba(0,0,0,0.75)",color:"#fff",padding:"8px 14px",borderRadius:"6px",fontSize:"14px",zIndex:99999,transition:"opacity 0.3s"});document.body.appendChild(n);setTimeout(()=>{n.style.opacity="0";setTimeout(()=>n.remove(),300)},500);})();

What this script does behind the scene if you are interested.

  • Wraps XMLHttpRequest.open and blocks any request whose URL contains watermark
  • Wraps window.fetch and does the same for fetch calls
  • Overrides Image.prototype.src so any attempt to assign a watermark URL is ignored
  • Shows a visible toast ✅ Watermark blocking active! at the top of the page

The result. AI Studio cannot load the watermark PNG. so there is nothing to overlay on top of your image.

Fallback option. If you are not able to run bookmarklets (for example on a locked-down browser) or you are working with an image that already has the watermark embedded, run it through the Free One Click Gemini Watermark Remover tool instead.

How to use the bookmarklet in Google AI Studio

  1. Open Google AI Studio in your browser
    https://aistudio.google.com/
    and click “Nano Banana”
    or just directly open
    https://aistudio.google.com/prompts/new_chat?model=gemini-2.5-flash-image
  2. Wait until the page fully loads
  3. Click the saved Remove Gemini Watermark bookmark
  4. You will see a small notification. ✅ Watermark blocking active!
  5. Generate images with Nano Banana as usual. In this tab, new outputs appear without any Gemini logo watermark

Alternative. If you already have watermarked files on your computer, you can also upload them to the Free Nano Banano Watermark Remover for a quick clean copy.

A few details to remember.

  • If you refresh the tab, you need to click the bookmarklet again
  • If you open AI Studio in a new tab, you also need to click it in that tab
  • This trick runs in the browser only. it will not work on the Gemini mobile/web app
  • The original image from the model is untouched. you are only blocking an overlay logo

Why this method is better than manual watermark removal

The usual workaround is slow and clumsy.

  • Export the image from AI Studio
  • Open it in an editor
  • Crop out the corner or edit over the watermark
  • Save a second copy
If you do need true pixel-level removal because your downloaded image actually contains the watermark, skip the editor and use the Free Unlimited Gemini Nano Banana Watermark Remover tool instead.

If you generate many images, this is a time sink.

This bookmarklet approach cuts all of that.

  • No plugins
  • No external editor
  • No image recompression
  • No quality loss
  • One click per tab session

You are not modifying the actual image at all. you are just preventing the browser from loading a small overlay PNG. The true Nano Banana output remains clean and untouched from the start. And since it is just a bookmarklet, it takes minimal resource to run.