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在 OpenClaw 中安装
/install pdf-watermark-remover
功能描述
Remove image-based watermarks from PDF files (e.g. "Made with Gamma", Canva, Notion watermarks). This skill should be used when the user wants to remove wate...
安全使用建议
This skill appears coherent and local-only, but take these precautions before using: 1) Always run it on copies/backups of your PDFs — modifying raw content streams and XObjects can corrupt files or remove non-watermark images if thresholds are too broad. 2) Test and tune the --x-threshold/width/height options on sample pages before batch-processing many documents. 3) It only handles image-based watermarks (not text-based watermarks); use redaction for text watermarks. 4) Ensure you have permission to remove watermarks (legal/ethical considerations). 5) Install pymupdf in a controlled environment (virtualenv) and review outputs before sharing them.
功能分析
Type: OpenClaw Skill
Name: pdf-watermark-remover
Version: 1.0.0
The skill provides a utility to remove image-based watermarks from PDF files by surgically deleting drawing instructions from content streams and removing XObject references. The Python script `scripts/remove_watermark.py` uses the legitimate `pymupdf` library and standard regex operations to perform these modifications locally. There is no evidence of data exfiltration, malicious execution, or harmful prompt injection instructions in `SKILL.md`.
能力评估
Purpose & Capability
Name/description match the included script and SKILL.md: the skill needs Python and pymupdf and the code implements content-stream/XObject edits to remove image watermarks. No unrelated credentials, binaries, or external services are requested.
Instruction Scope
SKILL.md instructs the agent to analyze and run the included script against local PDF files and to tune detection thresholds. It does not direct reading unrelated files, exfiltrating data, or contacting external endpoints.
Install Mechanism
No install spec or remote download is used. The only runtime dependency is pymupdf which the SKILL.md documents (pip install). The skill is instruction+script-only and nothing is fetched from arbitrary URLs.
Credentials
The skill requests no environment variables, credentials, or config paths. The few required runtime items (Python 3.8+ and pymupdf) are proportional to the task.
Persistence & Privilege
always is false and the skill does not request persistent system modifications or modify other skills' settings. It operates on user-supplied input/output files only.
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 pdf-watermark-remover - 安装完成后，直接呼叫该 Skill 的名称或使用
/pdf-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
v1.0.0
首次发布：从PDF内容流中删除图片水印绘制指令，零视觉残留
元数据
常见问题
PDF Watermark Remover 是什么？
Remove image-based watermarks from PDF files (e.g. "Made with Gamma", Canva, Notion watermarks). This skill should be used when the user wants to remove wate... 它是一个面向 Claude Code / OpenClaw 的 AI Agent Skill 插件，目前累计下载 91 次。
如何安装 PDF Watermark Remover？
在 OpenClaw 或 Claude Code 对话框中运行命令「/install pdf-watermark-remover」即可一键安装，无需额外配置。
PDF Watermark Remover 是免费的吗？
是的，PDF Watermark Remover 完全免费，采用 MIT-0 许可证，可自由下载、安装和使用。
PDF Watermark Remover 支持哪些平台？
PDF Watermark Remover 跨平台运行，可在任意部署了 OpenClaw / Claude Code 的环境中使用（cross-platform）。
谁开发了 PDF Watermark Remover？
由 EARFQUAKE（@ucrossmym1nd）开发并维护，当前版本 v1.0.0。
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