Merge pull request #728 from jhauga/skill-pdftk-server

Add skill pdftk-server

Author: aaronpowell

.codespellrc

@@ -1,18 +1,37 @@
 [codespell]
+
 # Ignore intentional misspellings used as examples and technical terms
+
 # numer - intentional example typo in add-educational-comments.prompt.md
+
 # wit - proper technical term/name (sardonic wit, Gilfoyle character trait)
+
 # aks - Azure Kubernetes Service (AKS) abbreviation
+
 # edn - Extensible Data Notation (Clojure data format)
+
 # ser - serialization abbreviation
+
 # ois - ObjectInputStream abbreviation in Java
+
 # gir - valid abbreviation/technical term
+
 # rouge - Rouge is a syntax highlighter (not "rogue")
+
 # categor - TypeScript template literal in website/src/scripts/pages/skills.ts:70 (categor${...length > 1 ? "ies" : "y"})
+
 # aline - proper name (Aline Ávila, contributor)
+
 # ative - part of "Declarative Agents" in TypeSpec M365 Copilot documentation (collections/typespec-m365-copilot.collection.md)
+
 # dateA, dateB - variable names used in sorting comparison functions
+
 # TE - HTTP transfer coding header
-ignore-words-list = numer,wit,aks,edn,ser,ois,gir,rouge,categor,aline,ative,afterall,deques,dateA,dateB,TE
+
+# FillIn - pdftk-server skill reference file available permission
+
+ignore-words-list = numer,wit,aks,edn,ser,ois,gir,rouge,categor,aline,ative,afterall,deques,dateA,dateB,TE,FillIn
+
 # Skip certain files and directories
+
 skip = .git,node_modules,package-lock.json,*.lock,website/build,website/.docusaurus

docs/README.skills.md

@@ -50,6 +50,7 @@ Skills differ from other primitives by supporting bundled assets (scripts, code
 | [microsoft-skill-creator](../skills/microsoft-skill-creator/SKILL.md) | Create agent skills for Microsoft technologies using Learn MCP tools. Use when users want to create a skill that teaches agents about any Microsoft technology, library, framework, or service (Azure, .NET, M365, VS Code, Bicep, etc.). Investigates topics deeply, then generates a hybrid skill storing essential knowledge locally while enabling dynamic deeper investigation. | `references/skill-templates.md` |
 | [nano-banana-pro-openrouter](../skills/nano-banana-pro-openrouter/SKILL.md) | Generate or edit images via OpenRouter with the Gemini 3 Pro Image model. Use for prompt-only image generation, image edits, and multi-image compositing; supports 1K/2K/4K output. | `assets/SYSTEM_TEMPLATE`<br />`scripts/generate_image.py` |
 | [nuget-manager](../skills/nuget-manager/SKILL.md) | Manage NuGet packages in .NET projects/solutions. Use this skill when adding, removing, or updating NuGet package versions. It enforces using `dotnet` CLI for package management and provides strict procedures for direct file edits only when updating versions. | None |
+| [pdftk-server](../skills/pdftk-server/SKILL.md) | Skill for using the command-line tool pdftk (PDFtk Server) for working with PDF files. Use when asked to merge PDFs, split PDFs, rotate pages, encrypt or decrypt PDFs, fill PDF forms, apply watermarks, stamp overlays, extract metadata, burst documents into pages, repair corrupted PDFs, attach or extract files, or perform any PDF manipulation from the command line. | `references/download.md`<br />`references/pdftk-cli-examples.md`<br />`references/pdftk-man-page.md`<br />`references/pdftk-server-license.md`<br />`references/third-party-materials.md` |
 | [penpot-uiux-design](../skills/penpot-uiux-design/SKILL.md) | Comprehensive guide for creating professional UI/UX designs in Penpot using MCP tools. Use this skill when: (1) Creating new UI/UX designs for web, mobile, or desktop applications, (2) Building design systems with components and tokens, (3) Designing dashboards, forms, navigation, or landing pages, (4) Applying accessibility standards and best practices, (5) Following platform guidelines (iOS, Android, Material Design), (6) Reviewing or improving existing Penpot designs for usability. Triggers: "design a UI", "create interface", "build layout", "design dashboard", "create form", "design landing page", "make it accessible", "design system", "component library". | `references/accessibility.md`<br />`references/component-patterns.md`<br />`references/platform-guidelines.md`<br />`references/setup-troubleshooting.md` |
 | [plantuml-ascii](../skills/plantuml-ascii/SKILL.md) | Generate ASCII art diagrams using PlantUML text mode. Use when user asks to create ASCII diagrams, text-based diagrams, terminal-friendly diagrams, or mentions plantuml ascii, text diagram, ascii art diagram. Supports: Converting PlantUML diagrams to ASCII art, Creating sequence diagrams, class diagrams, flowcharts in ASCII format, Generating Unicode-enhanced ASCII art with -utxt flag | None |
 | [powerbi-modeling](../skills/powerbi-modeling/SKILL.md) | Power BI semantic modeling assistant for building optimized data models. Use when working with Power BI semantic models, creating measures, designing star schemas, configuring relationships, implementing RLS, or optimizing model performance. Triggers on queries about DAX calculations, table relationships, dimension/fact table design, naming conventions, model documentation, cardinality, cross-filter direction, calculation groups, and data model best practices. Always connects to the active model first using power-bi-modeling MCP tools to understand the data structure before providing guidance. | `references/MEASURES-DAX.md`<br />`references/PERFORMANCE.md`<br />`references/RELATIONSHIPS.md`<br />`references/RLS.md`<br />`references/STAR-SCHEMA.md` |

skills/pdftk-server/SKILL.md

@@ -0,0 +1,162 @@
+---
+name: pdftk-server
+description: 'Skill for using the command-line tool pdftk (PDFtk Server) for working with PDF files. Use when asked to merge PDFs, split PDFs, rotate pages, encrypt or decrypt PDFs, fill PDF forms, apply watermarks, stamp overlays, extract metadata, burst documents into pages, repair corrupted PDFs, attach or extract files, or perform any PDF manipulation from the command line.'
+---
+
+# PDFtk Server
+
+PDFtk Server is a command-line tool for working with PDF documents. It can merge, split, rotate, encrypt, decrypt, watermark, stamp, fill forms, extract metadata, and manipulate PDFs in a variety of ways.
+
+## When to Use This Skill
+
+- Merging or joining multiple PDF files into one
+- Splitting or bursting a PDF into individual pages
+- Rotating PDF pages
+- Encrypting or decrypting PDF files
+- Filling PDF form fields from FDF/XFDF data
+- Applying background watermarks or foreground stamps
+- Extracting PDF metadata, bookmarks, or form field information
+- Repairing corrupted PDF files
+- Attaching or extracting files embedded in PDFs
+- Removing specific pages from a PDF
+- Collating separately scanned even/odd pages
+- Compressing or decompressing PDF page streams
+
+## Prerequisites
+
+- PDFtk Server must be installed on the system
+  - **Windows**: `winget install --id PDFLabs.PDFtk.Server`
+  - **macOS**: `brew install pdftk-java`
+  - **Linux (Debian/Ubuntu)**: `sudo apt-get install pdftk`
+  - **Linux (Red Hat/Fedora)**: `sudo dnf install pdftk`
+- Access to a terminal or command prompt
+- Verify installation by running `pdftk --version`
+
+## Step-by-Step Workflows
+
+### Merge Multiple PDFs
+
+```bash
+pdftk file1.pdf file2.pdf cat output merged.pdf
+```
+
+Using handles for more control:
+
+```bash
+pdftk A=file1.pdf B=file2.pdf cat A B output merged.pdf
+```
+
+### Split a PDF into Individual Pages
+
+```bash
+pdftk input.pdf burst
+```
+
+### Extract Specific Pages
+
+Extract pages 1-5 and 10-15:
+
+```bash
+pdftk input.pdf cat 1-5 10-15 output extracted.pdf
+```
+
+### Remove Specific Pages
+
+Remove page 13:
+
+```bash
+pdftk input.pdf cat 1-12 14-end output output.pdf
+```
+
+### Rotate Pages
+
+Rotate all pages 90 degrees clockwise:
+
+```bash
+pdftk input.pdf cat 1-endeast output rotated.pdf
+```
+
+### Encrypt a PDF
+
+Set an owner password and a user password with 128-bit encryption (default):
+
+```bash
+pdftk input.pdf output secured.pdf owner_pw mypassword user_pw userpass
+```
+
+### Decrypt a PDF
+
+Remove encryption using the known password:
+
+```bash
+pdftk secured.pdf input_pw mypassword output unsecured.pdf
+```
+
+### Fill a PDF Form
+
+Populate form fields from an FDF file and flatten to prevent further edits:
+
+```bash
+pdftk form.pdf fill_form data.fdf output filled.pdf flatten
+```
+
+### Apply a Background Watermark
+
+Place a single-page PDF behind every page of the input (input should have transparency):
+
+```bash
+pdftk input.pdf background watermark.pdf output watermarked.pdf
+```
+
+### Stamp an Overlay
+
+Place a single-page PDF on top of every page of the input:
+
+```bash
+pdftk input.pdf stamp overlay.pdf output stamped.pdf
+```
+
+### Extract Metadata
+
+Export bookmarks, page metrics, and document information:
+
+```bash
+pdftk input.pdf dump_data output metadata.txt
+```
+
+### Repair a Corrupted PDF
+
+Pass a broken PDF through pdftk to attempt automatic repair:
+
+```bash
+pdftk broken.pdf output fixed.pdf
+```
+
+### Collate Scanned Pages
+
+Interleave separately scanned even and odd pages:
+
+```bash
+pdftk A=even.pdf B=odd.pdf shuffle A B output collated.pdf
+```
+
+## Troubleshooting
+
+| Issue | Solution |
+|-------|----------|
+| `pdftk` command not found | Verify installation; check that pdftk is in your system PATH |
+| Cannot decrypt PDF | Ensure you are providing the correct owner or user password via `input_pw` |
+| Output file is empty or corrupt | Check input file integrity; try running `pdftk input.pdf output repaired.pdf` first |
+| Form fields not visible after fill | Use the `flatten` flag to merge fields into the page content |
+| Watermark not appearing | Ensure the input PDF has transparent regions; use `stamp` for opaque overlays |
+| Permission denied errors | Check file permissions on input and output paths |
+
+## References
+
+Bundled reference documents in the `references/` folder:
+
+- [pdftk-man-page.md](references/pdftk-man-page.md) - Complete manual reference with all operations, options, and syntax
+- [pdftk-cli-examples.md](references/pdftk-cli-examples.md) - Practical command-line examples for common tasks
+- [download.md](references/download.md) - Installation and download instructions for all platforms
+- [pdftk-server-license.md](references/pdftk-server-license.md) - PDFtk Server licensing information
+- [third-party-materials.md](references/third-party-materials.md) - Third-party library licenses

skills/pdftk-server/references/download.md

@@ -0,0 +1,75 @@
+# Download
+
+PDFtk provides an installer for Windows. Many Linux distributions provide a PDFtk package you can download and install using their package manager.
+
+## Microsoft Windows
+
+Download the PDFtk Server installer for Windows 10 and 11 using the following command:
+
+```bash
+winget install --id PDFLabs.PDFtk.Server
+```
+
+Then run the installer:
+
+```bash
+.\pdftk_server-2.02-win-setup.exe
+```
+
+After installation, open a command prompt, type `pdftk` and press Enter. PDFtk will respond by displaying brief usage information.
+
+## Linux
+
+On Debian/Ubuntu-based distributions:
+
+```bash
+sudo apt-get install pdftk
+```
+
+On Red Hat/Fedora-based distributions:
+
+```bash
+sudo dnf install pdftk
+```
+
+## PDFtk Server GPL License
+
+PDFtk Server (pdftk) is not public domain software. It can be installed and used at no charge under its [GNU General Public License (GPL) Version 2](https://www.pdflabs.com/docs/pdftk-license/gnu_general_public_license_2.txt). PDFtk uses third-party libraries. The [licenses and source code for these libraries are described here](https://www.pdflabs.com/docs/pdftk-license/) under Third-Party Materials.
+
+## PDFtk Server Redistribution License
+
+If you plan to distribute PDFtk Server as part of your own software, you will need a PDFtk Server Redistribution License. The exception to this rule is if your software is licensed to the public under the GPL or another compatible license.
+
+The commercial redistribution license allows you, subject to the terms of the license, to distribute an unlimited number of PDFtk Server binaries as part of one distinct commercial product. Please read the full license:
+
+[PDFtk Server Redistribution License (PDF)](https://pdflabs.onfastspring.com/pdftk-server)
+
+Now available for $995:
+
+[PDFtk Server Redistribution License](https://www.pdflabs.com/docs/pdftk-license/)
+
+## Build PDFtk Server from Source
+
+PDFtk Server can be compiled from its source code. PDFtk Server is known to compile and run on [Debian](https://packages.debian.org/search?keywords=pdftk), [Ubuntu Linux](https://packages.ubuntu.com/search?keywords=pdftk), [FreeBSD](https://www.freshports.org/print/pdftk/), Slackware Linux, SuSE, Solaris and [HP-UX](http://hpux.connect.org.uk/hppd/hpux/Text/pdftk-1.45/).
+
+Download and unpack the source:
+
+```bash
+curl -LO https://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/pdftk-2.02-src.zip
+unzip pdftk-2.02-src.zip
+```
+
+Review the [pdftk license information](https://www.pdflabs.com/docs/pdftk-license/) in: `license_gpl_pdftk/readme.txt`.
+
+Review the Makefile provided for your platform and confirm that `TOOLPATH` and `VERSUFF` suit your installation of gcc/gcj/libgcj. If you run `apropos gcc` and it returns something like `gcc-4.5`, then set `VERSUFF` to `-4.5`. The `TOOLPATH` probably does not need to be set.
+
+Change into the `pdftk` sub-directory and run:
+
+```bash
+cd pdftk
+make -f Makefile.Debian
+```
+
+Substitute your platform's Makefile filename as needed.
+
+PDFtk has been built using gcc/gcj/libgcj versions 3.4.5, 4.4.1, 4.5.0, and 4.6.3. PDFtk 1.4x fails to build on gcc 3.3.5 due to missing libgcj features. If you are using gcc 3.3 or older, try building [pdftk 1.12](https://www.pdflabs.com/tools/pdftk-the-pdf-toolkit/pdftk-1.12.tar.gz) instead.