PDF PPTX Watermark

duplicate of@avocadoleaf-highfive/pdf-watermark

PPTX→PDF watermark tool with real-time mobile parameter tuning. Convert PPT/PPTX to PDF, add custom watermarks (diagonal/grid/center), adjust text/size/opacity/rotation/color — all tunable live from your phone. Trigger: 加水印、转PDF、PDF水印、水印工具、add watermark, convert to PDF, PDF watermark.

AvocadoLeaf-Highfive@avocadoleaf-highfive

Install

openclaw skills install @avocadoleaf-highfive/pdf-pptx-watermark

PDF Watermark

📱 Core Highlight: Mobile Parameter Tuning Tune every watermark parameter in real-time from your phone — no config file editing, no guessing. Adjust, preview, export.

Convert PPT/PPTX to PDF and add custom watermarks with live mobile preview. 将 PPT/PPTX 转为 PDF，支持手机实时调参加水印。

Quick Start / 快速开始

bash

# One-liner: PPTX → watermarked PDF
python3 {baseDir}/scripts/pptx_to_pdf_watermark.py input.pptx output.pdf

# With custom config
python3 {baseDir}/scripts/pptx_to_pdf_watermark.py input.pdf output.pdf config.json

Features / 功能

📱 Mobile parameter tuning — live preview on phone, copy JSON, done
📐 3 layout modes — diagonal / grid / center
🎨 Full customization — text, size, opacity, rotation, color
🌍 Cross-platform — auto-detects CJK fonts (macOS/Linux/Windows)
📦 PPTX support — one step from PPTX to watermarked PDF
🔒 Local & safe — no network, no credentials, input never modified

Configuration / 配置

json

{
  "text": "CONFIDENTIAL",
  "fontSize": 60,
  "opacity": 0.15,
  "rotation": 45,
  "color": [0.5, 0.5, 0.5],
  "pattern": "diagonal",
  "repeatX": 3,
  "repeatY": 3,
  "offsetX": 200,
  "offsetY": 200
}

All parameters optional — sensible defaults provided.

Parameter	Default	Description
`text`	`"内部资料请勿外传"`	Watermark text
`fontSize`	`60`	Font size (pt)
`opacity`	`0.15`	Transparency (0–1)
`rotation`	`45`	Rotation (degrees)
`color`	`[0.5, 0.5, 0.5]`	RGB (0–1)
`pattern`	`"diagonal"`	`diagonal` / `grid` / `center`
`repeatX`	`3`	Grid horizontal count
`repeatY`	`3`	Grid vertical count

Dependencies / 依赖

LibreOffice (PPTX→PDF): brew install --cask libreoffice (macOS) / apt install libreoffice (Linux)
Python 3: pip3 install PyPDF2 reportlab

Principles

Non-destructive — input file is never modified
Cross-platform — auto-detects OS-appropriate fonts
No network required — all processing is local
No credentials — no API keys, nothing to leak