It finds the logo
The sparkle is matched against a rasterised copy of its own shape at every plausible size and position in both bottom corners — so it works whatever resolution you exported at.
Free · No sign-up · Nothing uploaded
Remove the Gemini
watermark.
Drop in an image made with the Gemini app, Nano Banana or AI Studio and the little white sparkle in the corner is gone — reconstructed, not blurred or painted over. One image or fifty at a time.
- 🔒 Never leaves your browser
- 🎯 Finds the logo by itself
- 📦 Bulk mode built in
100% private
Your images are decoded and processed inside this page. Nothing is uploaded, nothing is stored — pull your network cable out and it still works.
This browser is missing the features the tool needs (Web Workers,
createImageBitmap and Path2D). Please use a
current version of Chrome, Edge, Firefox or Safari.
Select mode
Choose whether to process a single image or a whole batch.
Upload image
An image created with Gemini, Nano Banana or Google AI Studio.
Drag an image here or click to select
PNG, JPG, JPEG or WebP · up to 10 MB
Upload images
Up to 50 images, processed one after another so your browser stays responsive.
Drag images here or click to select
PNG, JPG, JPEG or WebP · up to 10 MB each, 50 per batch
Reconstructed, not painted over
Most "removers" just smudge the corner. This one solves for the pixels that were actually there.
It measures the opacity
The background behind the logo is reconstructed from the pixels around it, which reveals exactly how transparent the overlay was — typically somewhere between 45% and 80%.
It undoes the blend
A watermark is just original × (1−a) + white × a. With
a known, that equation runs backwards and the original
colours come straight back.
It knows when to stop
Before touching a pixel it checks the match really behaves like a white overlay. If not, it tells you no watermark was found and hands your image back untouched.
Questions
It uses reverse alpha blending. The Gemini watermark is a semi-transparent white logo composited over the finished picture, so the blend is a known equation. Once the tool has located the logo and measured its opacity, it solves that equation backwards and recovers the original pixel values.
No. Every image is decoded, processed and saved entirely inside your browser. No image data is sent anywhere — you can disconnect from the internet after the page loads and it will still work.
No. This tool only removes the visible logo. SynthID is an invisible watermark developed by Google DeepMind that is embedded in the image data itself. It is not visible to the human eye and is not affected by this tool.
PNG, JPG, JPEG and WebP, up to 10 MB per image and 50 images per batch. Results are always saved as PNG — saving back to JPEG would put compression artefacts straight onto the pixels we just reconstructed.
Where the watermark was at its most opaque, some of the original detail is genuinely gone — no amount of maths can recover information the blend destroyed. Those few pixels are rebuilt from their surroundings, which can read very slightly smoother than the rest of the picture. Everywhere else the recovery is exact.
Nothing happens to it. Before editing anything the tool checks that what it found actually behaves like a semi-transparent white overlay — consistent opacity, and brightening that stops dead at the logo's outline. If the evidence is weak it reports "no watermark detected" and gives your image back untouched, rather than stamping a dark star-shaped smudge into it.
Making the images too?
BatchGemini queues all your prompts at once and lets Gemini generate every image on its own — then saves them straight to your computer.
See BatchGemini →