Lift the Gemini sparkle. Keep every pixel.
Drop images made with Gemini, Nano Banana or Imagen. Clearmark finds the corner logo, solves the exact blend that put it there, and gives you back the clean picture. No uploads, no sign-up, no limits.
Drop images here
or click to browse, or paste with Ctrl V
Cleaned on this device
Click any image to compare and fine-tune. Everything stays in this tab until you download it.
Math, not guesswork
AI "erasers" paint over the corner and invent new pixels. Clearmark reverses the exact blend Gemini used, so the pixels underneath come back.
Find the sparkle
Every likely Gemini logo size and corner offset is scored against a calibrated template of the logo's transparency. The strongest match wins, then gets refined to the exact pixel.
Reverse the blend
The logo is white laid over your image at a known opacity per pixel. Clearmark solves that equation backwards and tunes the strength until no trace of the logo pattern is left.
Save it clean
Only the logo area changes. Size, colors and the rest of the image stay exactly as they were. Save one file, or the whole batch as a ZIP.
α is the logo's opacity at that pixel, from 0 (invisible) to about 0.5 (the brightest point of the star). Because α is known, the original value can be recovered instead of guessed.
Everything in one tab
Private by design
Processing runs inside your browser. Nothing is uploaded, stored or logged. It even works with Wi-Fi off once loaded.
Unlimited batches
Drop fifty images at once. Each one is detected separately and the full set downloads as a single ZIP.
Fine-tune controls
Nudge the position pixel by pixel, change logo size or strength, and watch the result update live.
Before / after loupe
A zoomed corner view shows exactly what changed, so you can check the result before you save it.
Questions people ask
Is it free? Do I need an account?
Yes, it is free, with no account, no daily cap and no watermark of our own added.
Are my images uploaded anywhere?
No. The page reads the file with your browser, cleans it on a canvas in memory, and hands the result back to you. Closing the tab clears everything.
Which images does it work on?
Original downloads from Gemini, Nano Banana, Nano Banana Pro, Imagen and Google AI Studio that carry the white four-point sparkle in the bottom-right corner. Screenshots, resized copies or heavily re-compressed files clean less perfectly; use the fine-tune panel for those.
Will the quality drop?
Only the small logo area is recalculated. PNG output is lossless. JPG and WebP are saved at 97% quality, which is visually identical for most images.
It says "No watermark found". What now?
Open the image and use the fine-tune panel: pick the logo size, nudge the position until the box sits on the sparkle, then raise the strength. If the image was cropped, the logo may simply not be there.
Does it remove SynthID or AI metadata?
No. Clearmark removes only the visible corner logo. Google's invisible SynthID mark stays in the image, so tools can still identify it as AI-generated. Where a platform or law asks you to disclose AI content, you still should.