Agent skill · software engineering · aradotso
killerpdf-portable-editor
KillerPDF is a portable, single-EXE Windows PDF editor built with C#/WPF and PDFium — supports viewing, annotating, merging, splitting, signing, and printing PDFs with no installer, account, or telemetry.
Why this skill is useful
Provides specific commands and patterns for building and using a portable PDF editor in C#/WPF that the AI wouldn't reliably generate on its own.
What it needs
Requires dotnet, git installed locally. About 8k tokens when loaded. Last updated 2026-07-09. 70 stars on the source repository.
What this skill does
KillerPDF Portable PDF Editor Skill Skill by ara.so — Daily 2026 Skills collection. KillerPDF is a single-EXE (~6 MB zipped), portable Windows PDF editor for .NET Framework 4.8. It renders PDFs via PDFium (Docnet.Core), supports inline text editing, annotations, freehand drawing, highlights, signatures, merge/split, full-text search, and printing — all without Adobe, accounts, or telemetry. --- What KillerPDF Does Capability Details --- --- Rendering High-quality PDFium rendering via Docnet.Core Annotation Text boxes, freehand draw, highlight overlays Editing Inline text editing with font matching Pages Merge multiple PDFs, split selected pages, drag-and-drop reorder Signatures Draw/save reusable signatures, click to place Search Full-text search with highlighting, drag-select to copy Print Annotations flattened into output Distribution Single EXE, no runtime, no admin rights --- Getting the Binary No installer, no admin rights required. Just unzip and run. --- Building from Source Requirements Windows 10/11 x64 .NET 8 SDK or later (to build; output targets .NET Framework 4.8) Git Clone and Build Output lands in bin/Release/net48/publish/. The publish step produces: KillerPDF.exe — single Costura-bundled executable KillerPDF-<version>-src.zip — GPL3 corresponding source archive Project Structure --- Key Dependencies --- Core Patterns and Code Examples Opening and Rendering a PDF Page Annotation Model Hierarchy Freehand Drawing on the Annotation Canvas Signature Manager Merging PDFs Splitting Pages Full-Text Search Printing with Flattened Annotations --- MainWindow Integration Pattern --- XAML Layout Snippet --- Configuration KillerPDF is intentionally config-free for end users. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills aradotso/killerpdf-portable-editor