Gwt
Remove Gemini AI watermarks from images using GeminiWatermarkTool (GWT). Use this skill whenever the user mentions: Gemini watermark, 浮水印, AI image cleanup, removing logos from Gemini-generated images, Google ImageFX cleanup, batch processing AI-generated photos, or anything about a semi-transparent logo in the bottom-right corner of an image — even if they don't say "GeminiWatermarkTool" explicitly. Also trigger for follow-up requests like "the corner still looks dirty" or "there's still residual artifacts" after a previous removal attempt.
Install
npx skills add allenk/gwt-integrations --skill gwtgit clone --depth 1 https://github.com/allenk/gwt-integrations.git /tmp/gwt-integrations
mkdir -p ~/.claude/skills
cp -r /tmp/gwt-integrations/. ~/.claude/skills/gwtPersonal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.
From the SKILL.md
# GeminiWatermarkTool Skill for Claude-Like Agents ## Overview GeminiWatermarkTool (GWT) removes visible Gemini AI watermarks from images using mathematically accurate reverse alpha blending, with optional AI denoising (FDnCNN + NCNN Vulkan GPU) for residual cleanup. Source: https://github.com/allenk/GeminiWatermarkTool --- ## Binary Location Search in this order: 1. Environment variable: `GWT_BINARY_PATH` 2. System PATH: `GeminiWatermarkTool` (or `.exe` on Windows) 3. Claude skill bin directory: - Windows: `%USERPROFILE%\.claude\skills\gwt\bin\GeminiWatermarkTool.exe` - Linux/macOS: `~/.claude/skills/gwt/bin/GeminiWatermarkTool` 4. Repo-local bin directory (validation mode / fallback): - Windows: `.\bin\GeminiWatermarkTool.exe` - Linux/macOS: `./bin/GeminiWatermarkTool` If not found, run the installer: ``` python ~/.claude/skills/gwt/install.py ``` For local validation inside this repo only: ``` python ~/.claude/skills/gwt/install.py --dir ./bin ``` **Always pass `--no-banner`** when calling GWT — suppresses ASCII art that wastes tokens. --- ## Watermark Profile Selection (v0.3.1+) GWT ships with two watermark profiles. **The default targets Gemini 3.5 and later, with automatic legacy fallback.** | Profile | Targets | When tried | |---------|---------|------------| | Current (V2) | Gemini 3.5 and later outputs | first, by default | | Legacy (V1) | Pre-Gemini-3.5 outputs | automatically retried if V2 skips |
Details
- Skill name
gwt- Repository
- allenk/gwt-integrations
- License
- MIT
- Repo updated
- 22 May 2026
FAQ
What does the Gwt skill do?
Remove Gemini AI watermarks from images using GeminiWatermarkTool (GWT). Use this skill whenever the user mentions: Gemini watermark, 浮水印, AI image cleanup, removing logos from Gemini-generated images, Google ImageFX cleanup, batch processing AI-generated photos, or anything about a semi-transparent logo in the bottom-right corner of an image — even if they don't say "GeminiWatermarkTool" explicitly. Also trigger for follow-up requests like "the corner still looks dirty" or "there's still residual artifacts" after a previous removal attempt.
How do I install the Gwt skill?
skills CLI (Claude Code, Cursor, Codex and more): npx skills add allenk/gwt-integrations --skill gwt. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.
Is Gwt popular?
It lives in allenk/gwt-integrations, which has 11 GitHub stars and 5 forks.
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