dom-to-pptx

dom-to-pptx

The High-Fidelity HTML to PowerPoint Converter (v2.0.0)

Trusted by 230,000+ downloads every month — and now with native motion support.

[!TIP] Quick Start for AI Agents (Claude Code, Gemini, Windsurf): Run npx dom-to-pptx-skills to automatically install professional PPT creation skills into your agent's toolkit.

[!IMPORTANT] Experience the Power of dom-to-pptx: Check out Preso AI — an AI-native presentation platform that uses this library to deliver professional, high-fidelity PowerPoint exports from simple text prompts.

Most HTML-to-PPTX libraries fail when faced with modern web design. They break on gradients, misalign text, ignore rounded corners, or simply take a screenshot (which isn't editable).

dom-to-pptx is different. It is a Coordinate Scraper & Style Engine that traverses your DOM, calculates the exact computed styles of every element (Flexbox/Grid positions, complex gradients, shadows), and mathematically maps them to native PowerPoint shapes and text boxes. The result is a fully editable, vector-sharp presentation that looks exactly like your web view and as of v2.0.0, one that moves like a real motion-designed deck too.

🎬 What's New in v2.0.0

This is the biggest release yet, bringing native motion to your exports:

• 20+ Element Animations: Entrance and exit animations — including fade-in, zoom-in, fly-in, and wipe-in with directional variants (e.g. to-up) — applied directly as CSS classes and baked into real PowerPoint animation effects on export.
• 70+ Slide Transitions: A full library of slide-to-slide transitions, from subtle corporate styles (slide-transition-fade, slide-transition-push, slide-transition-wipe) to expressive creative styles (gallery, doors, zoom, bounce, and more).
• Animation Timing & Sequencing Controls: Fine-grained animate-duration-[MS] and animate-delay-[MS] utility classes, plus trigger classes (animate-trigger-on-click, animate-trigger-with, animate-trigger-after) to choreograph click-driven or sequential builds.
• Creative Text Builds: Character-by-character typing effects (letter class) and row-by-row bullet reveals (paragraph class).
• Browser Preview Support: New animations.css stylesheet and a domToPptx.applyBrowserAnimations() helper to preview element animations in-browser before export (note: slide-to-slide transitions are not previewed in-browser, only element animations are, though both export correctly).

See Animations & Transitions below for full usage details.

Features

🎬 Animations & Transitions (New in v2.0.0)

• Native Entrance & Exit Animations: Apply animation classes directly to HTML elements — no JS config needed — and they're converted into real, editable PowerPoint animation effects.
• Slide Transitions: Apply transition classes to your .slide containers to control how PowerPoint moves between slides, from subtle fades to expressive creative effects.
• Sequencing & Triggers: Coordinate multi-element builds with animate-trigger-with (simultaneous) and animate-trigger-after (chained), or require a click with animate-trigger-on-click.
• Typing & List-Reveal Builds: Use the letter or paragraph class for character-by-character or line-by-line text reveals.

🚀 Smart Font Embedding (v1.1.0)

• Smart Font Embedding: The library automatically detects the fonts used in your HTML, finds their URLs in your CSS, and embeds them into the PPTX. Your slides will look identical on any computer, even if the user doesn't have the fonts installed.
• Enhanced Icon Support: Flawless rendering of FontAwesome, Material Icons, and SVG-based icon libraries (including gradient text icons).

🎨 Advanced Visual Fidelity

• Complex Gradients: Includes a built-in CSS Gradient Parser that converts linear-gradient strings (with multiple stops, specific angles like 45deg, and transparency) into vector SVGs.
• Mathematically Accurate Shadows: Converts CSS Cartesian shadows (x, y, blur) into PowerPoint's Polar coordinate system (angle, distance) for 1:1 depth matching.
• Anti-Halo Image Processing: Uses off-screen HTML5 Canvas with source-in composite masking to render rounded images without the ugly white "halo" artifacts found in other libraries.
• Soft Edges/Blurs: Accurately translates CSS filter: blur() into PowerPoint's soft-edge effects, preserving visual depth.

📐 Smart Layout & Typography

• Auto-Scaling Engine: Build your slide in HTML at 1920x1080 (or any aspect ratio). The library automatically calculates the scaling factor to fit it perfectly into a standard 16:9 PowerPoint slide.
• Rich Text Blocks: Handles mixed-style text (e.g., bold spans inside a normal paragraph).
• Text Transformations: Supports CSS text-transform: uppercase/lowercase and letter-spacing.

⚡ Technical Capabilities

• Z-Index Handling: Respects DOM order for correct layering of elements.
• Border Radius Math: Calculates perfect corner rounding percentages based on element dimensions.
• Client-Side: Runs entirely in the browser. No server required.

✨ Featured Project: Preso AI

Preso AI is a state-of-the-art AI presentation builder built entirely on top of the dom-to-pptx engine. It demonstrates the full potential of this library by transforming AI-generated content into premium, editable PowerPoint decks.

• AI-to-PPTX Workflow: Turn a single prompt into a 10+ slide high-fidelity presentation.
• Atmospheric UI: Implements the "Atmospheric UI" design system natively.
• Pixel-Perfect Exports: Uses dom-to-pptx to ensure every gradient, shadow, and layout is preserved in the final .pptx file.

Try it now: preso-ai.vercel.app

Installation

npm install dom-to-pptx

🖥️ Command Line Interface (CLI) & Agent Skills (New!)

dom-to-pptx ships with a CLI suite to run headless PPTX exports or configure AI coding assistants:

1. Unified CLI Router (dom-to-pptx)

Run the unified command directly:

# General help
npx dom-to-pptx --help

# Run headless exporter (delegates to dom-to-pptx-exporter)
npx dom-to-pptx export slides.html [options]

# Run interactive skills installer (delegates to dom-to-pptx-skills)
npx dom-to-pptx skills

2. Headless Exporter CLI (dom-to-pptx-exporter)

A dedicated command to export local HTML files or remote URLs to PPTX files directly from the command line using a headless browser:

npx dom-to-pptx-exporter slides.html --output presentation.pptx

Options:

• --output, -o <path>: Output .pptx file path (defaults to same folder as input).
• --selector, -s <css>: CSS selector for slide container elements (defaults to .slide).
• --inject: Force-inject the local browser bundle (useful if the HTML doesn't bundle dom-to-pptx).
• --title <text> / --author <text>: Add presentation title / author metadata.
• --width <num> / --height <num>: Set custom slide dimensions in inches.

3. Agent Skills Installer CLI (dom-to-pptx-skills)

An interactive installer to configure presentation engineering skills for coding agents (Claude Code, Gemini CLI, Windsurf, Cursor):

npx dom-to-pptx-skills

The installer scans for agent directories, lets you choose targeted locations, and configures the optimized prompt templates automatically.

Usage

This library is intended for use in the browser (React, Vue, Svelte, Vanilla JS, etc.).

1. Basic Example (Auto-Font Embedding)

By default, dom-to-pptx attempts to automatically find and embed your web fonts.

import { exportToPptx } from 'dom-to-pptx';

document.getElementById('export-btn').addEventListener('click', async () => {
  // Pass the CSS selector of the container
  await exportToPptx('#slide-container', {
    fileName: 'slide-presentation.pptx',
  });
});

2. Manual Font Configuration (Optional)

If you are using external fonts (like Google Fonts) that are hosted on a server without CORS headers, automatic detection might fail. In that case, you can explicitly pass the font URLs:

import { exportToPptx } from 'dom-to-pptx';

await exportToPptx('#slide-container', {
  fileName: 'report.pptx',
  // Optional: Only needed if auto-detection fails due to CORS
  fonts: [
    {
      name: 'Roboto',
      url: 'https://fonts.gstatic.com/s/roboto/v30/KFOmCnqEu92Fr1Mu4mxK.woff2',
    },
  ],
});

3. Multi-Slide Example

To export multiple HTML elements as separate slides, pass an array of elements or selectors:

import { exportToPptx } from 'dom-to-pptx';

document.getElementById('export-btn').addEventListener('click', async () => {
  const slideElements = document.querySelectorAll('.slide');
  await exportToPptx(Array.from(slideElements), {
    fileName: 'multi-slide-presentation.pptx',
  });
});

4. SVG Vector Export (Editable Charts)

If your HTML contains SVG elements (like charts), you can keep them as vectors for editing in PowerPoint:

import { exportToPptx } from 'dom-to-pptx';

await exportToPptx('#slide-with-charts', {
  fileName: 'editable-charts.pptx',
  svgAsVector: true, // SVGs remain as vectors, not rasterized
});

In PowerPoint, right-click the SVG image and select "Convert to Shape" (or Group > Ungroup) to make it fully editable.

5. Animated Slides & Transitions (New in v2.0.0)

Animations and transitions are applied declaratively via CSS classes — no extra JavaScript options are needed. Just link the animation stylesheet (note: slide-to-slide transitions are not previewed in the browser; only element animations are) so motion previews correctly in the browser, then export as usual.

The applyBrowserAnimations(parentElement, options) helper configures the browser-side motion preview timeline. When enableClick is false (default automatic playback mode), the sequencer automatically schedules the slide's animations step-by-step. It accurately calculates the staggered duration of paragraph and letter builds, ensuring the next click-trigger step does not start until the previous build finishes. When enableClick is true, it binds a click listener to the .slide elements to advance the timeline manually on click.

<head>
  <!-- Required for accurate in-browser preview of animations (note: slide transitions are not previewed in-browser) -->
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/dom-to-pptx@latest/dist/animations.css" />
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/dom-to-pptx@latest/dist/transitions.css" />
</head>

<body>
  <div class="slide-stage">
    <!-- Apply a transition class to the slide itself -->
    <div class="slide slide-transition-fade" id="slide-1" style="width:1920px;height:1080px;">
      <!-- Apply an entrance animation to an element -->
      <h1 class="fade-in animate-duration-[1000]">Dynamic Presentation</h1>

      <!-- Chain a second animation after the first finishes -->
      <p class="fly-in to-up animate-duration-[800] animate-delay-[200] animate-trigger-after">
        Powered by dom-to-pptx native animations
      </p>
    </div>
  </div>

  <script src="https://cdn.jsdelivr.net/npm/dom-to-pptx@latest/dist/dom-to-pptx.bundle.js"></script>
  <script>
    // Apply browser-side animation behavior before the page is interacted with.
    // Pass { enableClick: true } to require clicking the slide to step through animations,
    // or leave empty/false to play them automatically.
    domToPptx.applyBrowserAnimations(document.body, { enableClick: true });

    document.getElementById('export-btn').onclick = async () => {
      await domToPptx.exportToPptx(Array.from(document.querySelectorAll('.slide')), {
        fileName: 'animated-presentation.pptx',
      });
    };
  </script>
</body>

Key animation/transition utility classes:

Class pattern	Applies to	Purpose
fade-in, zoom-in, fly-in, wipe-in (+ exit variants)	Element	Entrance/exit animation style (20+ available)
to-up, to-down, to-left, to-right	Element	Directional modifier for movement-based animations
animate-duration-[MS] / animate-delay-[MS]	Element	Custom timing in milliseconds, e.g. animate-duration-[600]
animate-trigger-on-click / animate-trigger-with / animate-trigger-after	Element	Click-triggered, simultaneous, or sequential-chain timing
letter / paragraph	Text element	Character-by-character typing or row-by-row reveal builds
slide-transition-fade, slide-transition-push, slide-transition-wipe, etc.	.slide container	Slide-to-slide transition style (70+ available)
transition-duration-fast / transition-dur-[MS]	.slide container	Custom transition speed

For the complete, exhaustive list of all 20+ animations and 70+ transitions with names and previews, see ANIMATIONS_WHITELIST.md and TRANSITIONS_WHITELIST.md (installed via npx dom-to-pptx-skills, or available in the repo's reference/ directory).

6. Browser Usage (Script Tags)

You can use dom-to-pptx directly via CDN. The bundle includes all dependencies.

<script src="https://cdn.jsdelivr.net/npm/dom-to-pptx@latest/dist/dom-to-pptx.bundle.js"></script>

<script>
  document.getElementById('export-btn').addEventListener('click', async () => {
    // The library is available globally as `domToPptx`
    await domToPptx.exportToPptx('#slide-container', {
      fileName: 'slide.pptx',
    });
  });
</script>

Recommended HTML Structure

We recommend building your slide container at 1920x1080px. The library will handle the downscaling to fit the PowerPoint slide (16:9).

<!-- Container (16:9 Aspect Ratio) -->
<!-- The library will capture this background color/gradient automatically -->
<div
  id="slide-container"
  class="slide w-[1000px] h-[562px] bg-white rounded-xl overflow-hidden relative shadow-2xl shadow-black/50 flex"
>
  <!-- Left Sidebar -->
  <div class="w-1/3 bg-slate-900 relative overflow-hidden flex flex-col p-10 justify-between">
    <!-- Decorative gradients -->
    <div class="absolute top-0 left-0 w-full h-full opacity-30 pointer-events-none">
      <div class="absolute -top-20 -left-20 w-64 h-64 bg-purple-600 rounded-full blur-3xl mix-blend-screen"></div>
      <div class="absolute bottom-0 right-0 w-80 h-80 bg-indigo-600 rounded-full blur-3xl mix-blend-screen"></div>
    </div>
    <div class="relative z-10">
      <div
        class="inline-flex items-center gap-2 px-3 py-1 rounded-full bg-white/10 border border-white/10 backdrop-blur-md mb-6"
      >
        <span class="w-2 h-2 rounded-full bg-green-400 animate-pulse"></span>
        <span class="text-xs font-medium text-slate-300 tracking-wider">LIVE DATA</span>
      </div>
      <h2 class="text-4xl font-bold text-white leading-tight mb-4">
        Quarterly <br />
        <span class="text-transparent bg-clip-text bg-gradient-to-r from-indigo-400 to-cyan-400">Performance</span>
      </h2>
      <p class="text-slate-400 leading-relaxed">
        Visualizing the impact of high-fidelity DOM conversion on presentation workflows.
      </p>
    </div>
    <!-- Feature List (Flexbox/Grid test) -->
    <div class="relative z-10 space-y-4">
      <div class="flex items-center gap-3 p-3 rounded-lg bg-white/5 border border-white/5">
        <div class="w-8 h-8 rounded-full bg-indigo-500/20 flex items-center justify-center text-indigo-400 font-bold">
          1
        </div>
        <div class="text-sm text-slate-300">Pixel-perfect Shadows</div>
      </div>
      <div class="flex items-center gap-3 p-3 rounded-lg bg-white/5 border border-white/5">
        <div class="w-8 h-8 rounded-full bg-purple-500/20 flex items-center justify-center text-purple-400 font-bold">
          2
        </div>
        <div class="text-sm text-slate-300">Complex Gradients</div>
      </div>
    </div>
  </div>
  <!-- Right Content -->
  <div class="w-2/3 bg-slate-50 p-10 relative">
    <!-- Header -->
    <div class="flex justify-between items-start mb-10">
      <div>
        <h3 class="text-slate-800 font-bold text-xl">Revenue Breakdown</h3>
        <p class="text-slate-500 text-sm">Fiscal Year 2024</p>
      </div>
      <div class="flex -space-x-2">
        <!-- Rounded Images Test (CORS friendly) -->
        <img
          class="w-10 h-10 rounded-full border-2 border-white object-cover shadow-md"
          src="https://images.unsplash.com/photo-1534528741775-53994a69daeb?auto=format&amp;fit=crop&amp;w=64&amp;h=64"
          alt="User 1"
        />
        <img
          class="w-10 h-10 rounded-full border-2 border-white object-cover shadow-md"
          src="https://images.unsplash.com/photo-1506794778202-cad84cf45f1d?auto=format&amp;fit=crop&amp;w=64&amp;h=64"
          alt="User 2"
        />
        <div
          class="w-10 h-10 rounded-full border-2 border-white bg-slate-200 flex items-center justify-center text-xs font-bold text-slate-500 shadow-md"
        >
          +5
        </div>
      </div>
    </div>
    <!-- Grid Layout Test -->
    <div class="grid grid-cols-2 gap-6 mb-8">
      <!-- Card 1: Gradient & Shadow -->
      <div class="bg-white p-5 rounded-xl complex-shadow border border-slate-100 relative overflow-hidden group">
        <div class="relative z-10">
          <p class="text-xs font-bold text-indigo-500 uppercase tracking-wider mb-1">Total Sales</p>
          <h4 class="text-3xl font-bold text-slate-800">$124,500</h4>
          <div class="mt-3 flex items-center text-xs font-semibold text-green-600">
            <svg class="w-3 h-3 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path
                stroke-linecap="round"
                stroke-linejoin="round"
                stroke-width="2"
                d="M13 7h8m0 0v8m0-8l-8 8-4-4-6 6"
              ></path>
            </svg>
            <span>+14.5%</span>
          </div>
        </div>
      </div>
      <!-- Card 2: Gradient Border/Background -->
      <div
        class="p-5 rounded-xl shadow-lg text-white relative overflow-hidden"
        style="
          background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        "
      >
        <p class="text-xs font-bold text-white/80 uppercase tracking-wider mb-1">Active Users</p>
        <h4 class="text-3xl font-bold text-white">45.2k</h4>
        <div class="mt-3 w-full bg-black/20 rounded-full h-1.5">
          <div class="bg-white/90 h-1.5 rounded-full" style="width: 70%"></div>
        </div>
      </div>
    </div>
    <!-- Complex Typography & Layout -->
    <div class="bg-indigo-50/50 rounded-xl p-6 border border-indigo-100">
      <h5 class="font-bold text-indigo-900 mb-3">Analysis Summary</h5>
      <p class="text-indigo-800/80 text-sm leading-relaxed">
        The
        <span class="font-bold text-indigo-600">Q3 projection</span>
        exceeds expectations due to the new
        <span class="italic">optimization algorithm</span>. We observed a
        <strong class="text-indigo-700">240% increase</strong>
        in processing speed across all nodes.
      </p>
    </div>
    <!-- Floating Badge (Absolute positioning test) -->
    <div
      class="absolute bottom-6 right-6 bg-white/90 backdrop-blur px-4 py-2 rounded-lg shadow-lg border border-slate-200 flex items-center gap-2"
    >
      <div class="w-2 h-2 rounded-full bg-red-500"></div>
      <span class="text-xs font-bold text-slate-600 uppercase">Confidential</span>
    </div>
  </div>
</div>

API

exportToPptx(elementOrSelector, options)

Returns: Promise<Blob> - Resolves with the generated PPTX file data (Blob).

Parameter	Type	Description
elementOrSelector	string | HTMLElement | Array<string | HTMLElement>	The DOM node(s) or ID selector(s) to convert. Can be a single element/selector or an array for multi-slide export.
options	object	Configuration object.

Options Object:

Key	Type	Default	Description
fileName	string	"export.pptx"	The name of the downloaded file.
autoEmbedFonts	boolean	true	Automatically detect and embed used fonts.
fonts	Array	[]	Manual array of font objects: { name, url }.
skipDownload	boolean	false	If true, the file is not downloaded automatically. Use the returned Blob for custom handling (upload).
svgAsVector	boolean	false	If true, keeps SVG elements as vectors (not rasterized). Enables "Convert to Shape" in PowerPoint.
layout	string	"LAYOUT_16x9"	Slide layout name (e.g., LAYOUT_4x3, LAYOUT_16x10, LAYOUT_WIDE).
width	number	10	Custom slide width in inches (requires height to be set).
height	number	5.625	Custom slide height in inches (requires width to be set).
listConfig	object	undefined	Global overrides for list styles. Structure: { color: string, spacing: { before: number, after: number } }.

Note: animations and transitions are controlled entirely through CSS classes on your elements (see Animated Slides & Transitions), not through the options object.

List Configuration Example:

listConfig: {
  spacing: {
    before: 10,       // Space before bullet (pt)
    after: 5          // Space after bullet (pt)
  }
}

applyBrowserAnimations(parentElement, options)

Applies browser animation inline styles by parsing animation class utilities. This helper enables real-time browser previewing of custom slide animation speeds, delays, sequencing triggers, and text builds with PowerPoint-accurate timeline parity.

Parameter	Type	Default	Description
parentElement	HTMLElement	Required	The root element of the slide stage or presentation.
options	object	{}	Optional configuration object.

Options Object (options):

Key	Type	Default	Description
enableClick	boolean	false	If true, click-triggered steps are initially paused and advance one-by-one upon slide clicks (matching manual click timing). If false (default), click-triggered steps are automatically chained and play sequentially, accurately waiting for staggered paragraph/letter builds to finish.

Important Notes

• Fonts & CORS:

  • Automatic Embedding: Works perfectly for local fonts and external fonts served with correct CORS headers.
  • Google Fonts: For auto-detection to work with Google Fonts, you must add crossorigin="anonymous" to your link tag: <link href="https://fonts.googleapis.com/..." rel="stylesheet" crossorigin="anonymous">
  • If a font cannot be accessed due to CORS, the library will log a warning and proceed without embedding it (PowerPoint will fallback to Arial).

• Layout System: The library does not "read" Flexbox or Grid definitions directly. It measures the final x, y, width, height of every element relative to the slide root and places them absolutely. This ensures 100% visual accuracy regardless of the CSS layout method used.

• CORS Images: External images (<img> tags) must also be served with Access-Control-Allow-Origin: * headers to be processed by the rounding/masking engine.

• Animations & Transitions: Link animations.css and transitions.css (note: only slide element animations are previewed in the browser; slide-to-slide transitions are not previewed in-browser, though they are still exported correctly) so motion previews correctly in your browser before export — the export engine reads the applied classes and converts them into native PowerPoint animation/transition effects regardless of whether the stylesheets are present at export time.

Contributors

A huge thank you to everyone who has helped improve dom-to-pptx!

Please see CONTRIBUTORS.md for the full list of our amazing contributors.

License

MIT © Atharva Dharmendra Jagtap and dom-to-pptx contributors.

Acknowledgements

This project is built on top of PptxGenJS. Huge thanks to the PptxGenJS maintainers and all contributors — dom-to-pptx leverages and extends their excellent work on PPTX generation.