# PDF Merger

> PDF Merger is an Agent Skill for documents published in the majiayu000/claude-skill-registry repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.

Merge multiple PDF files into single document with customizable options. Supports page selection, bookmarks, and metadata. Use when combining PDFs, creating documents from multiple sources, or organizing PDF collections.

- Skill name: `pdf-merger`
- Category: [Documents](https://www.openparable.com/skill/documents/1)
- Source: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/data/pdf-merger-skill/SKILL.md
- Repository: majiayu000/claude-skill-registry (498 GitHub stars when collected)

## SKILL.md

# PDF Merger

## Overview

Merge multiple PDF files into a single document with control over page order, bookmarks, and metadata.

## Quick Start

### Basic Merge

Merge all PDFs in directory:
```bash
python scripts/merge-pdfs.py --input *.pdf --output merged.pdf
```

### Selective Merge

Merge specific files in order:
```bash
python scripts/merge-pdfs.py --input cover.pdf content.pdf appendix.pdf --output document.pdf
```

## Common Use Cases

### Use Case 1: Combine Report Sections

Merge multiple chapter PDFs into complete report:

```bash
python scripts/merge-pdfs.py \
  --input ch1.pdf ch2.pdf ch3.pdf references.pdf \
  --output complete-report.pdf \
  --add-bookmarks
```

### Use Case 2: Extract and Recombine Pages

Merge specific pages from different sources:

```bash
# See references/page-selection.md for syntax
python scripts/merge-pdfs.py \
  --input "doc1.pdf[1-5,10]" "doc2.pdf[3-8]" \
  --output combined.pdf
```

### Use Case 3: Add Metadata

Merge PDFs with custom metadata:

```bash
python scripts/merge-pdfs.py \
  --input *.pdf \
  --output merged.pdf \
  --title "Project Documentation" \
  --author "Your Name" \
  --subject "Technical Documentation"
```

## Features

- ✓ Merge unlimited PDFs
- ✓ Preserve formatting and links
- ✓ Page selection syntax
- ✓ Bookmark generation
- ✓ Metadata customization
- ✓ Progress reporting

## Script Options

```bash
python scripts/merge-pdfs.py [options]

Required:
  --input FILES       PDF files to merge (space-separated)
  --output FILE       Output PDF filename

Optional:
  --add-bookmarks     Create bookmark for each source file
  --title TEXT        Set PDF title metadata
  --author TEXT       Set PDF author metadata
  --subject TEXT      Set PDF subject metadata
  --verbose           Show detailed progress
```

## Advanced Features

For advanced usage including page ranges, rotation, and custom ordering, see [references/advanced-merging.md](references/advanced-merging.md).

For comparison of PDF libraries (PyPDF2, pypdf, pdfrw), see [references/pdf-libraries-comparison.md](references/pdf-libraries-comparison.md).

## Troubleshooting

### Issue: "Corrupted PDF" Error
**Cause**: Source PDF has format issues
**Fix**: Try repairing with `python scripts/repair-pdf.py input.pdf`

### Issue: Large Output File
**Cause**: Images not compressed
**Fix**: Use `--compress` flag to reduce file size

### Issue: Bookmarks Not Created
**Cause**: Missing `--add-bookmarks` flag
**Fix**: Add flag to command

---

**Version**: 1.0
**Last Updated**: October 25, 2025
**Example Type**: Medium skill (SKILL.md + references + script)

---

Source: https://www.openparable.com/skill/documents/pdf-merger (OpenParable). Cite the canonical URL above.