syncfusion-dotnet-powerpoint

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---
name: syncfusion-dotnet-powerpoint
description: Create, edit, format, and convert PowerPoint (.pptx) presentations using Syncfusion Presentation for .NET. Use this skill for PowerPoint processing and presentation automation when the user asks to generate slides, modify PPTX content, insert text or images, build presentations programmatically, or convert PowerPoint to PDF using C# code or CSX execution.
metadata:
  author: Syncfusion Inc
  version: "34.1.29"
---

# PowerPoint (PPTX) Presentation Processing
## Overview

Create, edit and convert PowerPoint (.pptx) files using the Syncfusion Presentation Library.
This skill supports two operational modes — generating C# code for the user’s project or executing tasks directly through a CSX script.
## Key Capabilities

- **Create & Edit:** Presentations (.pptx), slides (clone and merge), paragraphs, text boxes, tables, shapes, images, lists, connectors, hyperlinks, headers/footers, comments, document properties, sections
- **Advanced Features:** Custom animations and slide transitions, master slide layouts, speaker notes, SmartArt, OLE objects, find and replace, macros, chart creation and editing, chart-to-image conversion
- **Conversion:** PowerPoint to PDF; PowerPoint to images (PNG, JPEG)
- **Security:** Encrypt and decrypt presentations; set and remove write protection

## Prerequisites

- .NET SDK 8+ and `dotnet-script`: `dotnet tool install -g dotnet-script`
- Free license: https://www.syncfusion.com/products/communitylicense

## Quick Start Examples

### Example 1: Generate Code (Mode 1)
**User:** "Show me how to create a PowerPoint presentation with a simple bar chart"

**Result:** C# code snippet displayed (no files created)

### Example 2: Execute Task (Mode 2)
**User:** "Create a PowerPoint presentation with a simple bar chart at output/SalesChart.pptx"

**Result:** Physical file created at `output/SalesChart.pptx` with the chart embedded

## Two Modes — Select Based on User Intent

### Mode 1: Generate C# Code for the User's Project *(default)*
Use this mode when the user wants to view, write, review, refactor, or modify C# code related to PowerPoint processing.

**Trigger keywords:** "show me how", "how to", "how can I", "how do I", "provide code", "provide an example", "give an example", "demonstrate", "code snippet", "sample code", "example", "sample", "give me", "show me", "Program.cs", "example code", "generate code for", "codesnippet" .

**Workflow:**
 
#### Step 1 — Detect Application Type and Suggest Required NuGet Packages
- Inspect the workspace project files (`.csproj`, `web.config`, `App.config`, `Startup.cs`, `Program.cs`, etc.) and use the detection signals table in `references/nuget-packages.md` to determine the application type.
- Based on the detected application type, identify the correct NuGet package(s) from references/nuget-packages.md and instruct the user to install them before generating any code.
 
#### Step 2 — Generate Code from Reference Files Only
Do NOT invent, guess, or suggest any API, method, property, class, or namespace not explicitly present in the reference files.
 
- Read the relevant `references/*.md` file(s) for the requested feature
- Build C# code **strictly** from the APIs and snippets found in those files
- Select the correct snippet variant based on the app type detected in Step 1:
  - **Windows-specific apps** (WinForms, WPF, .NET Framework Console, ASP.NET MVC4/5 ) → use Windows-specific snippets
  - **Cross-platform apps** (ASP.NET Core, .NET Core/.NET 5+ Console, Blazor, MAUI) → use cross-platform / `.Net.Core` snippets
- Do **not** create or run any `.csx` script
---

### Mode 2: Execute via CSX Script *(does not touch project files)*
Use this mode only when the user explicitly requests execution, file generation, or a fully produced output (such as a completed PPTX file).

**Trigger keywords:** "create a presentation", "make a presentation", "generate a presentation", "open", "edit", "modify", "change" a `.pptx` file