@office-open/pptx

Create PowerPoint presentations (.pptx) in TypeScript and JavaScript — generate, parse, and patch from plain JSON, no Microsoft Office required. Built for AI agents and hand-written code alike; runs in Node.js, browsers, Deno, and Bun.

Features

• 🖥️ Slide Management — Create presentations with multiple slides, slide masters, and slide layouts
• 🔷 Shapes — Rectangles, ellipses, lines, connectors, and custom geometry shapes
• ✍️ Text & Rich Formatting — Paragraphs, runs, fonts, colors, alignment, and spacing
• 📊 Tables — Full table support with rows, cells, borders, and cell properties
• 📈 Charts — Bar, line, pie, area, and scatter charts with customization
• 🧩 SmartArt — Built-in SmartArt graphic generation with multiple layouts and styles
• 🖼️ Images — Inline pictures with fills, transformations, and effects
• 🎨 Backgrounds — Solid color, gradient, and picture backgrounds
• 🔄 Transitions — Slide transitions with various types and durations
• ✨ Animations — Entrance, emphasis, exit, and motion path animations
• 🎬 Media — Video and audio embedding
• 🔗 Hyperlinks — Clickable hyperlinks on shapes and text
• 📑 Headers & Footers — Slide header/footer with date, slide number
• 📝 Notes — Speaker notes for each slide
• 👥 Group Shapes — Group multiple shapes together
• 🖌️ DrawingML — Shapes with fills, outlines, shadows, glow, reflection, and 3D effects
• 📖 Parsing — Parse existing .pptx files with parsePresentation for round-trip workflows
• 🔧 Template Patching — Patch existing PPTX templates via placeholder replacement

Installation

# pnpm
pnpm add @office-open/pptx

# npm
npm install @office-open/pptx

# yarn
yarn add @office-open/pptx

# bun
bun add @office-open/pptx

Quick Start

import { generatePresentation } from "@office-open/pptx";
import { writeFileSync } from "node:fs";

const buffer = await generatePresentation({
  slides: [
    {
      children: [
        {
          shape: {
            textBody: { text: "Hello World" },
            fill: "4472C4",
            x: 100,
            y: 100,
            width: 600,
            height: 400,
          },
        },
      ],
    },
  ],
});

writeFileSync("presentation.pptx", buffer);

API

• generatePresentation(options) — generate a .pptx file; generatePresentationSync and generatePresentationStream cover sync and streaming output
• parsePresentation(bytes) — read a .pptx back into PresentationOptions
• patchPresentation(input) — patch an existing .pptx template by placeholder replacement

Every input is a plain JSON object (PresentationOptions and its option types). The full typed API reference lives in the documentation; the same types are also frozen as JSON Schemas — npx office-open schema slice pptx PresentationOptions.

Parsing

Read existing .pptx files and re-create them as PresentationOptions:

import { parsePresentation, generatePresentation } from "@office-open/pptx";
import { readFileSync, writeFileSync } from "node:fs";

const opts = parsePresentation(new Uint8Array(readFileSync("input.pptx")));

// Modify parsed data, then re-generate
const buffer = await generatePresentation(opts);
writeFileSync("output.pptx", buffer);

Benchmark

Performance vs PptxGenJS (higher ops/s is better, Windows 11; each scenario runs under both Node 24 and Bun 1.4).

Default = XML DEFLATE level 1; media matches MS Office PowerPoint — already-compressed formats (PNG/JPEG/GIF) are STOREd, the rest (EMF/WMF/BMP/TIFF/…) use DEFLATE level 6. All STORE = no compression ({ compression: { xml: 0, media: 0 } }). PptxGenJS (async only) defaults to STORE (JSZip) and applies DEFLATE to every entry with compression: true.

// Default (matches MS Office)
await generatePresentation(options);
// All STORE (no compression)
await generatePresentation(options, { compression: { xml: 0, media: 0 } });
// Stream as ReadableStream<Uint8Array> (pipe to a file / HTTP response)
generatePresentationStream(options);

Create + toBuffer / toStream

| Scenario | Runtime | Default sync | Default async | All STORE sync | All STORE async | Default stream | PptxGenJS DEFLATE | PptxGenJS STORE | | ------------------ | ------- | ------------ | ------------- | -------------- | --------------- | -------------- | ----------------- | --------------- | | Simple (2 shapes) | Node 24 | 862 ops/s | 1,150 ops/s | 2,535 ops/s | 2,878 ops/s | 1,466 ops/s | 177 ops/s | 177 ops/s | | | Bun 1.4 | 2,016 ops/s | 563 ops/s | 4,327 ops/s | 4,573 ops/s | 326 ops/s | 133 ops/s | 133 ops/s | | Styled shapes (20) | Node 24 | 997 ops/s | 1,161 ops/s | 2,573 ops/s | 2,355 ops/s | 1,299 ops/s | 165 ops/s | 173 ops/s | | | Bun 1.4 | 2,367 ops/s | 510 ops/s | 3,992 ops/s | 3,920 ops/s | 390 ops/s | 131 ops/s | 145 ops/s | | Table (10x5) | Node 24 | 1,149 ops/s | 1,210 ops/s | 2,940 ops/s | 2,953 ops/s | 1,403 ops/s | 821 ops/s | 885 ops/s | | | Bun 1.4 | 2,233 ops/s | 508 ops/s | 4,707 ops/s | 4,101 ops/s | 504 ops/s | 842 ops/s | 1,093 ops/s | | Full featured | Node 24 | 789 ops/s | 951 ops/s | 1,760 ops/s | 1,600 ops/s | 1,063 ops/s | 85.1 ops/s | 89.8 ops/s | | | Bun 1.4 | 1,686 ops/s | 499 ops/s | 2,198 ops/s | 2,396 ops/s | 339 ops/s | 71.4 ops/s | 72.2 ops/s |

Large Files — Create + toBuffer / toStream

| Scenario | Runtime | Default sync | Default async | All STORE sync | All STORE async | Default stream | PptxGenJS DEFLATE | PptxGenJS STORE | | --------------------- | ------- | ------------ | ------------- | -------------- | --------------- | -------------- | ----------------- | --------------- | | 30 slides x 20 shapes | Node 24 | 197 ops/s | 200 ops/s | 345 ops/s | 347 ops/s | 233 ops/s | 112 ops/s | 120 ops/s | | | Bun 1.4 | 327 ops/s | 89.0 ops/s | 499 ops/s | 458 ops/s | 98.3 ops/s | 125 ops/s | 161 ops/s | | 30 slides x 10 images | Node 24 | 112 ops/s | 112 ops/s | 144 ops/s | 144 ops/s | 117 ops/s | 0.298 ops/s | 0.304 ops/s | | | Bun 1.4 | 204 ops/s | 87.9 ops/s | 224 ops/s | 213 ops/s | 32.9 ops/s | 0.233 ops/s | 0.232 ops/s | | 100x10 table | Node 24 | 303 ops/s | 327 ops/s | 342 ops/s | 401 ops/s | 323 ops/s | 117 ops/s | 117 ops/s | | | Bun 1.4 | 395 ops/s | 292 ops/s | 530 ops/s | 429 ops/s | 209 ops/s | 139 ops/s | 150 ops/s | | 50 slides full | Node 24 | 73.8 ops/s | 71.5 ops/s | 100 ops/s | 92.5 ops/s | 77.5 ops/s | 0.906 ops/s | 0.893 ops/s | | | Bun 1.4 | 124 ops/s | 60.7 ops/s | 143 ops/s | 134 ops/s | 25.8 ops/s | 0.687 ops/s | 0.686 ops/s |

Large File (~100MB) — Mixed Content

40 slides x (2 shapes + 2 mixed-size images + 3x3 table).

| Scenario | Runtime | Default sync | Default async | All STORE sync | All STORE async | Default stream | PptxGenJS DEFLATE | PptxGenJS STORE | | --------------- | ------- | ------------ | ------------- | -------------- | --------------- | -------------- | ----------------- | --------------- | | 40 slides mixed | Node 24 | 22.8 ops/s | 20.9 ops/s | 23.9 ops/s | 23.5 ops/s | 19.7 ops/s | 0.214 ops/s | 0.216 ops/s | | | Bun 1.4 | 34.8 ops/s | 24.4 ops/s | 28.9 ops/s | 39.9 ops/s | 4.80 ops/s | 0.165 ops/s | 0.165 ops/s |

Stream = generatePresentationStream (default compression, fully drained). Under Node the archive is deflated in parallel on the libuv thread pool; under Bun and browsers it deflates inline / off-thread via fflate.

Examples

Check the demo folder for working examples covering every feature.

Documentation

• Documentation — guides, API reference, and examples
• Changelog — release notes
• Report Issues — bug reports and feature requests

Related Packages

• office-open — all formats + CLI + AI SDK tools in one install
• @office-open/docx — Word (.docx)
• @office-open/xlsx — Excel (.xlsx)
• @office-open/core — shared OOXML infrastructure
• @office-open/xml — XML parsing and serialization

License

• MIT © Demo Macro