PDF Merge & Split
Combine multiple PDF files into one or split PDFs into separate documents.
Overview
This skill helps you:
- Merge multiple PDFs into a single file
- Split PDFs by page ranges
- Extract specific pages
- Reorder pages within a PDF
- Create custom arrangements
How to Use
Merge PDFs
"Merge these 3 PDFs into one file"
"Combine document1.pdf and document2.pdf"
"Join all PDFs in this folder in alphabetical order"
Split PDF
"Split this PDF into individual pages"
"Extract pages 5-10 from this PDF"
"Split this PDF every 5 pages"
Reorder
"Move page 3 to the end"
"Reorder pages: 1, 3, 2, 4, 5"
"Reverse the page order"
Merge Operations
Basic Merge
## PDF Merge Plan
### Input Files
| Order | File | Pages | Size |
|-------|------|-------|------|
| 1 | cover.pdf | 1 | 50 KB |
| 2 | chapter1.pdf | 15 | 2.1 MB |
| 3 | chapter2.pdf | 22 | 3.4 MB |
| 4 | appendix.pdf | 8 | 1.2 MB |
### Output
- **Filename**: combined_document.pdf
- **Total Pages**: 46
- **Estimated Size**: ~6.7 MB
### Merge Options
- [ ] Add bookmarks for each source file
- [ ] Preserve original bookmarks
- [ ] Include blank page between files
- [ ] Optimize/compress output
Advanced Merge
## Advanced PDF Merge
### Custom Page Selection
| Source | Pages to Include | Insert Position |
|--------|------------------|-----------------|
| main.pdf | 1-10 | 1-10 |
| insert.pdf | All (5 pages) | After page 10 |
| main.pdf | 11-20 | 16-25 |
| appendix.pdf | 2-4 only | 26-28 |
### Output Configuration
- **Filename**: custom_merged.pdf
- **Page numbering**: Reset to 1 / Continue from original
- **Bookmarks**: Create from filenames / Preserve all
### Quality Settings
- Resolution: Original / Reduce to [X] DPI
- Compression: None / Low / Medium / High
Split Operations
Split by Range
## PDF Split Plan
### Source
- **File**: large_document.pdf
- **Total Pages**: 100
### Split Configuration
| Output File | Page Range | Pages |
|-------------|------------|-------|
| part1.pdf | 1-25 | 25 |
| part2.pdf | 26-50 | 25 |
| part3.pdf | 51-75 | 25 |
| part4.pdf | 76-100 | 25 |
### Naming Pattern
`[original_name]_part[N].pdf`
Split by Size
## Split by File Size
### Source
- **File**: huge_report.pdf
- **Total Pages**: 500
- **File Size**: 250 MB
### Target
- **Max file size**: 25 MB
- **Estimated splits**: ~10 files
### Output
| File | Pages | Actual Size |
|------|-------|-------------|
| report_001.pdf | 1-52 | 24.8 MB |
| report_002.pdf | 53-98 | 23.2 MB |
| ... | ... | ... |
Split by Bookmark
## Split by Bookmarks/Chapters
### Source Structure
- large_manual.pdf
- Chapter 1: Introduction (p.1)
- Chapter 2: Setup (p.15)
- Chapter 3: Usage (p.45)
- Chapter 4: Advanced (p.120)
- Appendix (p.180)
### Split Output
| File | Chapter | Pages |
|------|---------|-------|
| ch1_introduction.pdf | Introduction | 1-14 |
| ch2_setup.pdf | Setup | 15-44 |
| ch3_usage.pdf | Usage | 45-119 |
| ch4_advanced.pdf | Advanced | 120-179 |
| appendix.pdf | Appendix | 180-end |
Extract Specific Pages
## Page Extraction
### Source
- **File**: contract.pdf (20 pages)
### Pages to Extract
- [x] Page 1 (Cover)
- [x] Pages 5-7 (Terms)
- [x] Page 15 (Signatures)
- [x] Page 20 (Appendix A)
### Output
- **File**: contract_key_pages.pdf
- **Pages**: 6 total (1, 5, 6, 7, 15, 20)
Page Operations
Reorder Pages
## Page Reorder Plan
### Current Order
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
### New Order
1, 2, 4, 3, 5, 6, 8, 7, 9, 10
### Changes
- Page 3 ↔ Page 4 (swapped)
- Page 7 ↔ Page 8 (swapped)
Delete Pages
## Page Deletion
### Source
- document.pdf (25 pages)
### Pages to Remove
- Page 3 (blank page)
- Pages 12-14 (outdated section)
- Page 25 (draft watermark)
### Result
- New page count: 20
- Output: document_cleaned.pdf
Insert Pages
## Page Insertion
### Base Document
- main.pdf (10 pages)
### Insertions
| Insert | After Page | From |
|--------|------------|------|
| Cover page | 0 (beginning) | cover.pdf |
| Diagram | 5 | diagrams.pdf (page 2) |
| Appendix | 10 (end) | appendix.pdf |
### Result
- New page count: 14
Rotate Pages
## Page Rotation
### File: scanned_doc.pdf
### Rotations Needed
| Page(s) | Current | Rotation | New |
|---------|---------|----------|-----|
| 3 | Portrait | 90° CW | Landscape |
| 7-9 | Upside down | 180° | Correct |
| 15 | Landscape | 90° CCW | Portrait |
Batch Processing
Batch Merge
## Batch Merge Job
### Task: Merge PDFs by Project
### Folder Structure
/reports/
/project-a/
report1.pdf
report2.pdf
/project-b/
summary.pdf
details.pdf
### Output
| Merged File | Sources |
|-------------|---------|
| project-a_combined.pdf | report1.pdf, report2.pdf |
| project-b_combined.pdf | summary.pdf, details.pdf |
Batch Split
## Batch Split Job
### Input
- /monthly_reports/ (12 files, each ~50 pages)
### Operation
- Split each file into 5-page chunks
### Output
- /monthly_reports_split/
- jan_001.pdf, jan_002.pdf, ...
- feb_001.pdf, feb_002.pdf, ...
- ...
Tool Recommendations
Free Tools
- PDF24: Web and desktop, full featured
- ILovePDF: Web-based, easy to use
- PDFsam Basic: Desktop, open source
- Preview (Mac): Built-in, drag and drop
Professional
- Adobe Acrobat Pro: Industry standard
- Foxit PDF Editor: Full featured
- Nitro Pro: Good for business
Command Line
- pdftk: Classic, powerful
- qpdf: Fast, scriptable
- pdfcpu: Modern Go-based tool
Limitations
- Cannot perform actual file operations (provides guidance)
- Password-protected PDFs need password first
- Very large files may need chunked processing
- Some PDFs with restrictions cannot be modified
- Merging different page sizes may cause issues
简诗 AI 安全边界
- 不自动安装依赖、修改系统权限、创建持久化任务或执行下载内容。
- 涉及发送、发布、删除、付款、部署或其他外部写入时，先展示目标与影响并取得用户明确确认。
- 凭据只用于用户指定的对应官方服务，不回显、不记录，也不转发到无关地址。
- 命令和代码默认作为参考；只有用户明确要求执行且目标范围清楚时才可运行。
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