banana-watermark-remove-skill

name	banana-watermark-remove-skill
description	Remove Gemini Nano Banana / Pro watermarks from images using GeminiWatermarkTool. Use when users want to (1) remove visible watermarks from AI-generated images, (2) batch process multiple images to remove watermarks, (3) clean up Gemini watermarks from screenshots or documents. Supports Windows, macOS, and Linux platforms.

Banana Watermark Remove Skill

Remove Gemini Nano Banana / Pro visible watermarks from images using reverse alpha blending.

Tool Location

The GeminiWatermarkTool executables are bundled within this skill at tools/:

• Windows: tools/GeminiWatermarkTool.exe
• macOS: tools/GeminiWatermarkTool-macOS
• Linux: tools/GeminiWatermarkTool-Linux

All binaries are standalone with zero dependencies.

Workflow

1. Determine the operating system and select the correct executable:

   • Windows → GeminiWatermarkTool.exe
   • macOS → GeminiWatermarkTool-macOS
   • Linux → GeminiWatermarkTool-Linux

2. Execute the command based on input type:

   • Single file: GeminiWatermarkTool -i watermarked.jpg -o clean.jpg
   • Directory (batch): GeminiWatermarkTool -i ./input_folder/ -o ./output_folder/

3. Verify output

Usage Examples

# Windows - Single file
.\GeminiWatermarkTool.exe -i watermarked.jpg -o clean.jpg

# Windows - Directory batch
.\GeminiWatermarkTool.exe -i ./input_folder/ -o ./output_folder/

# macOS - Single file
./GeminiWatermarkTool-macOS -i watermarked.jpg -o clean.jpg

# macOS - Directory batch
./GeminiWatermarkTool-macOS -i ./input_folder/ -o ./output_folder/

# Linux - Single file
./GeminiWatermarkTool-Linux -i watermarked.jpg -o clean.jpg

# Linux - Directory batch
./GeminiWatermarkTool-Linux -i ./input_folder/ -o ./output_folder/

Command Line Options

Option	Short	Description
--input <path>	-i	Input file or directory
--output <path>	-o	Output file or directory
--verbose	-v	Enable verbose output
--quiet	-q	Suppress output
--version	-V	Show version
--help	-h	Show help

Supported formats: .jpg, .jpeg, .png, .webp, .bmp

Limitations

• Visible watermarks only: Does NOT remove SynthID (invisible watermarks)
• Gemini watermarks only: Designed specifically for Gemini Nano Banana / Pro watermarks
• Auto-detects 48×48 or 96×96 watermark size based on image dimensions