@office-open/pptx

@office-open/pptx

Generate and parse .pptx presentations with a declarative TypeScript API. Works in Node.js and browsers.

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: {
              children: [{ paragraph: { children: ["Hello World"] } }],
            },
            fill: "4472C4",
            x: 100,
            y: 100,
            width: 600,
            height: 400,
          },
        },
      ],
    },
  ],
});

writeFileSync("presentation.pptx", buffer);

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 / Node 24).

Default = XML DEFLATE level 1 (SuperFast); media is split by type, matching MS Office PowerPoint — already-compressed formats (PNG/JPEG/GIF) are STOREd, the rest (EMF/WMF/BMP/TIFF/…) use DEFLATE level 1 (verified on a real MS Office file). All STORE = no compression ({ compression: { xml: 0, media: 0 } }). PptxGenJS (async only) defaults to STORE (via JSZip), supports DEFLATE via compression: true (applies to ALL entries including images).

// Default (matches MS Office)
await generatePresentation(options);
// All STORE (no compression)
await generatePresentation(options, { compression: { xml: 0, media: 0 } });

Create + toBuffer (end-to-end)

Scenario	Default sync	Default async	All STORE sync	All STORE async	PptxGenJS DEFLATE	PptxGenJS STORE
Simple (2 shapes)	1,391 ops/s	693 ops/s	4,055 ops/s	4,148 ops/s	182 ops/s	187 ops/s
Styled shapes (20)	1,302 ops/s	661 ops/s	4,387 ops/s	4,030 ops/s	188 ops/s	183 ops/s
Table (10x5)	1,694 ops/s	802 ops/s	7,787 ops/s	7,891 ops/s	857 ops/s	937 ops/s
Full featured	1,155 ops/s	627 ops/s	2,873 ops/s	2,821 ops/s	97 ops/s	98 ops/s

Large Files — Create + toBuffer

Scenario	Default sync	Default async	All STORE sync	All STORE async	PptxGenJS DEFLATE	PptxGenJS STORE
30 slides x 20 shapes	271 ops/s	144 ops/s	571 ops/s	577 ops/s	119 ops/s	120 ops/s
30 slides x 10 images	130 ops/s	87.4 ops/s	173 ops/s	168 ops/s	0.32 ops/s	0.32 ops/s
100x10 table	618 ops/s	453 ops/s	1,082 ops/s	1,039 ops/s	128 ops/s	123 ops/s
50 slides full	89.2 ops/s	60.5 ops/s	131 ops/s	129 ops/s	0.95 ops/s	0.95 ops/s

Large File (~100MB) — Mixed Content

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

Scenario	Default sync	Default async	All STORE sync	All STORE async	PptxGenJS DEFLATE	PptxGenJS STORE
40 slides mixed	24.5 ops/s	22.1 ops/s	26.3 ops/s	26.5 ops/s	0.22 ops/s	0.23 ops/s

Examples

Check the demo folder for working examples covering every feature.

License

• MIT © Demo Macro