100% Private · Runs in your browser

Remove Gemini
watermark instantly

Upload any Gemini AI image and get a perfectly clean version — no uploads to servers, no quality loss, pure mathematics.

Remove Watermark See it in action ↓
<1ms
Server time
100%
Local processing
Zero
Data collected
OS
Fully Opensource
Before & After

Drag to compare

Real Gemini AI images. The watermark in the bottom-right corner is mathematically reversed — pixel by pixel.

Before — watermarked After — clean
Before After
Upload Tool

Clean your image now

Your image never leaves your device. Everything runs on the Canvas API in your browser.

Drop your Gemini image here
or click to browse your files
PNG JPG WebP
Original (watermarked)
Original
Clean (watermark removed)
Clean
How it works

Reverse alpha blending

Gemini applies its watermark using a known alpha compositing formula. We simply invert it.

01
Detect watermark location
Based on image dimensions, the engine determines whether the 48×48 or 96×96 watermark template applies and precisely calculates its bottom-right position.
02
Build the alpha map
A precomputed watermark template is loaded and converted to a per-pixel alpha (opacity) map. Each value tells us how strongly the watermark affected that pixel.
03
Recover original pixels
For each watermarked pixel, the formula C = (C_w − α·255) / (1 − α) reconstructs the original color. Pixels below the alpha threshold are left untouched.
04
Export as lossless PNG
The restored ImageData is written back to a canvas and exported at full resolution. Zero recompression, zero quality loss.
Watermark compositing model
Cw = α · Clogo + (1 − α) · Corig
Inverse — recover original pixel
Corig = (Cw − α · 255) / (1 − α)
Constants
αmin = 0.002 · αmax = 0.99
Clogo = 255 (white watermark)
Sizes: 48×48 · 96×96
Why Unwatermark

Built different

Zero server contact
Your image is never uploaded anywhere. The Canvas API processes everything locally in your browser tab.
Instantaneous results
No round trips, no queues. The math runs in milliseconds regardless of your internet speed.
Lossless output
Exported as PNG with no recompression artifacts. You get exactly the pixel quality Gemini produced.
No account needed
No sign-up, no cookies, no tracking. Open the page, drop your image, done.
Both watermark sizes
Automatically handles the 48×48 variant (smaller images) and 96×96 variant (large 1024+ images).
Browser extension too
For power users: install the extension and watermarks are stripped automatically every time you hit download on Gemini.
Browser Extension

Want it even faster?

Install the extension once and watermarks vanish automatically every time you download from Gemini — no uploading, no visiting a website, just clean images.

  • 1 Install from Edge Add-ons or load the .crx in Chrome
  • 2 Open Gemini AI and generate your image
  • 3 Click download — you get a clean PNG automatically
Gemini Watermark Remover
Automatic, silent, zero-setup watermark removal for Gemini AI
Microsoft Edge
Microsoft Edge
Edge Add-ons Store
 Google Chrome
Google Chrome
Download .crx file
✓