PDF Watermark

PDF 水印与页面元素

为 PDF 文档添加水印、页码、页眉、页脚及其他叠加元素。

概述

此技能可帮助你：

• 添加文本或图片水印
• 插入页码
• 创建页眉和页脚
• 应用印章和标签
• 批量处理多份文档

使用方法

水印

"Add 'CONFIDENTIAL' watermark to this PDF"
"Apply a diagonal 'DRAFT' watermark"
"Add our company logo as a watermark"

页码

"Add page numbers to this PDF"
"Number pages starting from page 3"
"Add 'Page X of Y' at the bottom center"

页眉/页脚

"Add a header with the document title"
"Create a footer with date and page number"
"Add company name to every page header"

水印选项

文本水印

## Text Watermark Configuration

### Content
- **Text**: CONFIDENTIAL
- **Font**: Arial Bold
- **Size**: 72 pt
- **Color**: #FF0000 (Red)
- **Opacity**: 30%

### Position
- **Placement**: Center
- **Rotation**: 45° diagonal
- **Offset X**: 0
- **Offset Y**: 0

### Pages
- **Apply to**: All pages / First only / Custom range
- **Skip pages**: [None]

### Preview

╔════════════════════════╗
║                        ║
║    C O N F I D E N     ║
║      T I A L           ║
║                        ║
╚════════════════════════╝

图片水印

## Image Watermark Configuration

### Image
- **File**: logo.png
- **Size**: 200 x 100 px
- **Opacity**: 20%
- **Maintain aspect ratio**: Yes

### Position
| Preset | Description |
|--------|-------------|
| Center | Middle of page |
| Top-right | Corner logo |
| Bottom-center | Footer area |
| Tile | Repeated pattern |

### Current Setting
- **Position**: Bottom-right corner
- **Margin**: 20px from edges
- **Behind text**: Yes (background)

水印预设

预设	文本	样式	使用场景
草稿	DRAFT	灰色、对角、50%	正在处理的文档
机密	CONFIDENTIAL	红色、对角、30%	敏感文档
副本	COPY	蓝色、水平、25%	复制件
已批准	APPROVED	绿色、印章样式	签核
样本	SAMPLE	灰色、平铺	演示文档
请勿复制	DO NOT COPY	红色、对角、40%	受限文档

页码

配置选项

## Page Numbering Configuration

### Format
| Style | Example |
|-------|---------|
| Simple | 1, 2, 3 |
| Page X | Page 1 |
| X of Y | 1 of 25 |
| Section | 1-1, 1-2 |
| Roman | i, ii, iii |
| Letter | A, B, C |

### Position
| Location | Alignment |
|----------|-----------|
| Header | Left / Center / Right |
| Footer | Left / Center / Right |

### Current Setting
- **Format**: Page {n} of {total}
- **Position**: Footer, Center
- **Font**: Arial, 10pt
- **Start from**: Page 1
- **Skip pages**: Cover (page 1)

高级编号

## Advanced Page Number Scheme

### Section-Based Numbering
| Pages | Format | Example |
|-------|--------|---------|
| 1 (Cover) | None | - |
| 2-5 (Front matter) | Roman | i, ii, iii, iv |
| 6-100 (Body) | Arabic | 1, 2, 3... |
| 101-110 (Appendix) | Letter | A-1, A-2 |

### Prefix/Suffix
- **Prefix**: "Page "
- **Suffix**: " - Company Name"
- **Result**: "Page 5 - Company Name"

页眉和页脚

页眉配置

## Header Setup

### Layout (3-column)
| Left | Center | Right |
|------|--------|-------|
| [Logo] | Document Title | [Date] |

### Styling
- **Font**: Arial, 10pt
- **Color**: #333333
- **Line below**: Yes, 0.5pt gray

### Dynamic Fields
| Field | Code | Output |
|-------|------|--------|
| Page number | {page} | 5 |
| Total pages | {pages} | 25 |
| Date | {date} | Jan 29, 2026 |
| Time | {time} | 14:30 |
| Filename | {filename} | report.pdf |
| Title | {title} | Q4 Report |

页脚配置

## Footer Setup

### Layout
| Left | Center | Right |
|------|--------|-------|
| © 2026 Company | Confidential | Page {page} of {pages} |

### Styling
- **Font**: Arial, 9pt
- **Color**: #666666
- **Line above**: Yes, 0.5pt gray
- **Margin from bottom**: 0.5 inch

印章和标签

印章选项

## Document Stamps

### Preset Stamps
| Stamp | Style | Color |
|-------|-------|-------|
| APPROVED | ✓ Checkmark | Green |
| REJECTED | ✗ X mark | Red |
| REVIEWED | ○ Circle | Blue |
| PENDING | △ Triangle | Yellow |
| FINAL | ▢ Box | Black |

### Custom Stamp
- **Text**: SIGNED
- **Date**: Include date below
- **Name**: Include name line
- **Style**: Official stamp look

Bates 编号

## Bates Numbering (Legal)

### Configuration
- **Prefix**: ABC-
- **Start**: 000001
- **Suffix**: -2026
- **Position**: Bottom right

### Example
ABC-000001-2026
ABC-000002-2026
ABC-000003-2026
...

### Across Multiple Documents
| Document | Start | End |
|----------|-------|-----|
| doc1.pdf (50 pages) | ABC-000001 | ABC-000050 |
| doc2.pdf (30 pages) | ABC-000051 | ABC-000080 |
| doc3.pdf (25 pages) | ABC-000081 | ABC-000105 |

批量处理

批量添加水印任务

## Batch Watermark Application

### Input
- **Folder**: /documents/contracts/
- **Files**: 25 PDFs
- **Total Pages**: 450

### Watermark Settings
- **Type**: Text
- **Text**: CONFIDENTIAL
- **Style**: Diagonal, 30% opacity, red

### Progress
| File | Pages | Status |
|------|-------|--------|
| contract_001.pdf | 15 | ✅ Complete |
| contract_002.pdf | 22 | ✅ Complete |
| contract_003.pdf | 18 | ⏳ Processing |
| ... | ... | ... |

### Results
- Processed: 25/25 files
- Total pages watermarked: 450
- Output folder: /documents/contracts_watermarked/

输出示例

水印报告

## Watermark Application Report

### Document
- **Input**: quarterly_report.pdf
- **Output**: quarterly_report_watermarked.pdf
- **Pages**: 45

### Applied Elements
| Element | Details | Pages |
|---------|---------|-------|
| Watermark | "CONFIDENTIAL" diagonal | All |
| Logo | Company logo, bottom-right | All |
| Page numbers | "Page X of Y", footer center | 2-45 |
| Header | Title + Date | All |
| Footer | Copyright notice | All |

### Verification
- [ ] Watermark visible but not obscuring content
- [ ] Page numbers sequential and correct
- [ ] Headers/footers properly positioned
- [ ] No content overlap issues

工具推荐

在线工具

• SmallPDF：轻松添加水印
• ILovePDF：页码功能出色
• PDF24：免费且可配置
• Sejda：选项丰富

桌面软件

• Adobe Acrobat Pro：完全掌控
• Foxit PDF Editor：功能出色
• PDF-XChange：选项丰富
• Preview (Mac)：仅提供基本功能

编程工具

• pdf-lib (JavaScript)：完全掌控
• PyPDF2 (Python)：基本水印功能
• iText (Java/.NET)：专业级
• PDFBox (Java)：选项丰富

局限性

• 无法实际执行水印操作（仅提供指导）
• 图片水印需要适当的分辨率
• 某些受保护的 PDF 会禁止修改
• 复杂水印可能会增大文件体积
• 水印位置可能因页面尺寸不同而变化
• 字体可用性会影响文本水印