Chrome · Edge · Opera · Brave
Banana Clean is a free Chrome extension that removes the Gemini watermark (Nano Banana / Nano Banana Pro) automatically on download. Lossless removal in <100ms — no uploads, no sign-ups. 15 free cleans included, then $4.99 for lifetime PRO.
Local processing — your images never leave your machine.
Banana Clean is a free Gemini watermark remover extension that automatically strips the Nano Banana logo from images generated by Google Gemini and Google AI Studio. Works in Chrome, Edge, Opera, and Brave. Lossless removal via reverse alpha blending — your images never leave the browser. Processing takes under 100ms per image.
gemini.google.com or AI Studio — the extension works on both
Prompt, style, aspect ratio — business as usual
The extension intercepts the file automatically
No banana. Reverse alpha blending in <100ms
original = (watermarked - α × logo) / (1 - α)
PRO
Start with 15 free watermark removals — no card required. When you run out, unlock unlimited access with a single payment. No subscriptions, no recurring charges.
Nano Banana is Google's image generation model built into Gemini and AI Studio. It adds a small banana logo to the bottom-right corner of every generated image — 48x48 or 96x96 pixels depending on resolution.
Install Banana Clean from the Chrome Web Store. The extension intercepts downloads from Gemini and AI Studio and removes the watermark automatically. Generate an image, click Download, get a clean file.
You get 15 free cleanings — no card, no sign-up. After that, a one-time $4.99 payment unlocks unlimited lifetime access. No subscriptions.
Chrome, Edge, Opera, and Brave — any Chromium-based browser that supports extensions from the Chrome Web Store.
No. Watermark removal runs entirely in your browser using the Canvas API. Your images never leave your machine. The extension sends only anonymous usage events for product analytics.
gemini.google.com and aistudio.google.com — both Google services that use the Nano Banana image generator. The extension cleans images when you download via the built-in Download button.
Images are processed right in your browser and never sent anywhere. For product analytics, the extension sends only anonymous usage events — no image data, no personal information.
Watermark masks are bundled with the extension and updated through the Chrome Web Store. New pattern — new update.
Banana Clean uses reverse alpha blending: original = (watermarked - α × logo) / (1 - α). The extension has pre-computed masks of the Nano Banana logo at 48x48 and 96x96 pixels. When you download an image, it reads the watermark region, applies the inverse formula pixel by pixel using the Canvas API, and restores the original colors. No AI, no inpainting — pure math.
Yes. Banana Clean works on both gemini.google.com and aistudio.google.com. Google AI Studio uses the same Nano Banana image generator, so the watermark is identical and removed the same way.
Online tools require you to upload your image to a third-party server. Banana Clean works as a browser extension — it intercepts the download automatically and removes the watermark locally in your browser. No uploads, no waiting, no privacy risk. Processing takes under 100ms vs several seconds for online tools.
No. Banana Clean intercepts the official Download button in Gemini and AI Studio. Right-click "Save Image As" saves the in-chat preview which may be lower resolution. Use the Download button for the best quality and automatic watermark removal.
No. Google embeds two types of watermarks: the visible Nano Banana logo in the corner (this is what Banana Clean removes) and SynthID — an invisible watermark baked into pixel data by Google DeepMind. SynthID cannot be removed by any tool without destroying the image quality. Banana Clean only removes the visible logo.
Yes. Nano Banana Pro uses the same visible watermark as the standard Nano Banana model. Banana Clean removes it from both. The extension ships with masks for both 48x48 and 96x96 pixel watermarks used across all Nano Banana variants.
Publish AI-generated visuals to social media, blogs, and newsletters without the Gemini logo.
Use Gemini images in mockups, presentations, and client work — watermark-free.
Create ad creatives, landing page visuals, and product shots from AI Studio without visible branding.
Generate placeholder images, app assets, and documentation graphics clean and ready to ship.
10-second install. Works right away.