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Gemini Watermark Remover

Name: Gemini Watermark Remover
Author: fzlra

作者 FZLR · GitHub ↗ · v1.1.2

cross-platform ✓ 安全检测通过

476

总下载

当前安装

版本数

在 OpenClaw 中安装

/install gemini-watermark-remover

功能描述

Remove visible Gemini AI watermarks from images via reverse alpha blending. Use for cleaning Gemini-generated images, removing the star/sparkle logo watermark.

使用说明 (SKILL.md)

Gemini Watermark Remover

Remove visible Gemini AI watermarks (star/sparkle logo) from generated images using mathematically accurate reverse alpha blending.

Fully offline — pure Python, local processing only, images are not uploaded.

When to Use

Remove watermark from Gemini AI generated images
Clean images before publishing or sharing
Batch process multiple images

Quick Start

Install Dependencies (one-time)

pip install Pillow numpy

Usage

# Single image (auto-detect watermark)
python3 scripts/remove_watermark.py photo.jpg

# Specify output path
python3 scripts/remove_watermark.py photo.jpg -o clean_photo.jpg

# Force removal without detection
python3 scripts/remove_watermark.py photo.jpg -o clean.jpg --force

How It Works

Gemini adds watermark using alpha blending:

watermarked = alpha * 255 + (1 - alpha) * original

Reverse the equation:

original = (watermarked - alpha * 255) / (1 - alpha)

Detection Rules

Image Size	Watermark Size	Right Margin	Bottom Margin
Width > 1024 AND Height > 1024	96×96	64px	64px
Otherwise	48×48	32px	32px

Key Points

Uses built-in watermark templates (assets/bg_48.png / assets/bg_96.png)
Alpha map = max RGB channel value (not alpha channel)
Includes noise filtering (ALPHA_NOISE_FLOOR)
Pure mathematical method, pixel-level accuracy

Limitations

Removes only visible watermark (bottom-right semi-transparent logo)
Cannot remove invisible watermarks (e.g., SynthID)
Designed for current Gemini watermark pattern

Dependencies

Python 3
Pillow (PIL)
NumPy

安全使用建议

This skill appears coherent and local-only, but before running any third-party script: (1) inspect the full scripts/remove_watermark.py for any unexpected network calls or filesystem operations (the provided excerpt looks local-only), (2) run in an isolated environment or VM if you are unsure, (3) confirm you have the legal right to remove watermarks for the images you process, and (4) install dependencies into a virtualenv to avoid affecting system Python packages.

功能分析

Type: OpenClaw Skill Name: gemini-watermark-remover Version: 1.1.2 The skill bundle provides a legitimate utility for removing Gemini AI watermarks from images using a local Python script. The implementation in `scripts/remove_watermark.py` uses mathematically sound reverse alpha blending with embedded base64-encoded watermark templates to process images offline. There are no signs of data exfiltration, network communication, or malicious code execution; the script relies solely on standard libraries like Pillow and NumPy for image manipulation.

能力评估

✓ Purpose & Capability

Name/description claim removing Gemini visible watermarks; included script and README implement a reverse alpha-blending algorithm with embedded watermark templates. No unrelated binaries, env vars, or external services are requested.

✓ Instruction Scope

SKILL.md instructs only local usage (pip install Pillow/numpy and run scripts/remove_watermark.py). It does not direct reading unrelated system files, sending data to remote endpoints, or accessing credentials. The script embeds templates and operates on local images.

✓ Install Mechanism

No install spec; this is instruction-only with a bundled Python script and requirements.txt. Dependency installation via pip is reasonable and expected for a Python image-processing tool. No remote downloads or nonstandard installers are used.

✓ Credentials

No environment variables, credentials, or config paths are required. The requested dependencies (Pillow, NumPy) are appropriate for image processing.

✓ Persistence & Privilege

Skill does not request always:true or modify system/other-skill configs. Default invocation settings are used; the skill is user-invocable and not forced into all agent runs.

如何使用

确保已安装 OpenClaw（本地或 Docker 部署）
在对话框中输入安装命令：/install gemini-watermark-remover
安装完成后，直接呼叫该 Skill 的名称或使用 /gemini-watermark-remover 触发
根据 Skill 的参数说明提供必要输入，即可获得结构化输出

版本历史

v1.1.2

Update Chinese README

v1.1.1

Update README to reflect embedded templates

v1.1.0

Embed templates in code for reliable distribution

v1.0.3

Include assets in scripts folder

v1.0.2

Ensure assets included

v1.0.1

Added file manifest to README

v1.0.0

Initial release of gemini-watermark-remover. - Removes visible Gemini AI star/sparkle watermarks from images using reverse alpha blending. - Fully offline; processes images locally with no uploads. - Supports automatic watermark detection and batch processing. - Provides pixel-level accuracy and noise filtering. - Simple usage via command line, with options for output path and forced removal. - Requires Python 3, Pillow, and NumPy.

元数据

Slug gemini-watermark-remover

版本 1.1.2

许可证 —

累计安装 3

当前安装数 3

历史版本数 7

常见问题