LOCAL IMAGE TOOL
Gemini Watermark Remover
Choose an image downloaded from Gemini. Remove its visible corner mark without painting, then choose your export format.
Drop your Gemini image here
PNG, JPG or WebP · One image at a time
Up to 10 MiB · Maximum 2048 × 2048 pixels
Check the corner
Ready. Your image will be processed on this device.
Phones can take longer. Large images may fail if your browser runs out of memory. Your original file is never overwritten.
What this tool changes
Reverse alpha blending subtracts a matched white watermark overlay and reconstructs the pixels beneath it. It does not paint or generate replacement content.
This version checks supported corner layouts. Cropped, resized, heavily compressed images or unfamiliar watermark versions may not match. Check the preview: exact recovery is not guaranteed. Invisible provenance marks are outside this tool’s scope.
Formats and limits
Input: PNG, JPG/JPEG or WebP. Output: choose PNG or JPG. PNG avoids additional lossy compression; JPG uses lossy compression and a white background for transparency.
One image at a time. Maximum file size: 10 MiB (10,485,760 bytes). Maximum width: 2048 pixels. Maximum height: 2048 pixels. Minimum width and height: 160 pixels. Images are not resized.
These are enforced tool limits, not a guarantee that every device can process an image at the limit. No daily quota is imposed by this tool.
Use images you own or have permission to edit. Cleanmark is independent of Google. Calibration assets: Gemini Watermark Remover project (MIT license).