# killerpdf-portable-editor

Guides agents on creating and compiling a standalone C# WPF PDF editor powered by PDFium. It helps with page splitting, drawing annotations, and single-binary packaging.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 422 installs · ★ 88
- Author: reason-machines
- License: not stated · policy=link-only · description only; the file stays with the author
- Source: https://github.com/reason-machines/trending-skills/tree/HEAD/skills/killerpdf-portable-editor/SKILL.md
- Updated: 2026-10-09
- HTML: https://affpapa.org/en/nevibecode/skills/killerpdf-portable-editor

## What it does

This skill provides agents with implementation patterns for KillerPDF, a zero-telemetry desktop document utility. It explains how to render documents via `Docnet.Core`, configure a WPF drawing layer on a custom canvas, and bundle the output into an isolated executable using `Costura.Fody`.

The included guides outline full-text search routines, signature management, and page reorganization like merging and splitting. When printing, the tool flattens applied markup straight into the exported stream.

Compiling the source code demands a 64-bit Windows environment and `.NET 8 SDK`. The final standalone binary targets `.NET Framework 4.8`, meaning it launches without administrator privileges or background runtimes.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add reason-machines/trending-skills --skill killerpdf-portable-editor -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/killerpdf-portable-editor/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/killerpdf-portable-editor/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add reason-machines/trending-skills --skill killerpdf-portable-editor -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/killerpdf-portable-editor/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add reason-machines/trending-skills --skill killerpdf-portable-editor -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/killerpdf-portable-editor/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install reason-machines/trending-skills killerpdf-portable-editor
```

2. **Manually: put the files in place**
- File: `.github/skills/killerpdf-portable-editor/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add reason-machines/trending-skills --skill killerpdf-portable-editor -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/reason-machines/trending-skills --path skills/killerpdf-portable-editor
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/killerpdf-portable-editor/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add reason-machines/trending-skills --skill killerpdf-portable-editor -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/reason-machines/trending-skills/tree/HEAD/skills/killerpdf-portable-editor/SKILL.md

## When to use it
- render PDF pages inside WPF using Docnet.Core
- bundle a C# project into a single EXE using Costura.Fody
- split and merge document pages without Acrobat
- add custom drawing canvases and signature stamps

## Example prompts
- Show how to render a PDF page into a WriteableBitmap using Docnet.Core
- Write a dotnet publish command to compile KillerPDF into a single executable
- Create a WPF annotation model for placing text boxes over a PDF canvas

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From the same set: [reason-machines/trending-skills](https://affpapa.org/en/nevibecode/by/reason-machines/trending-skills.md) — 199 cards

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NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md