PPTX

Equations and Symbols

Add mathematical equations and special symbols to slides

You can include mathematical equations and special symbols in your presentations.

Equations in Text Runs

Use Unicode characters and baseline for superscript/subscript:

{
  "slides": [
    {
      "children": [
        {
          "shape": {
            "x": "1.3cm",
            "y": "1.3cm",
            "width": "21.2cm",
            "height": "7.9cm",
            "textBody": {
              "children": [
                {
                  "children": [
                    { "text": "E = mc", "size": 28 },
                    { "text": "2", "size": 20, "baseline": 30000 }
                  ]
                },
                {
                  "children": [
                    { "text": "H", "size": 28 },
                    { "text": "2", "size": 20, "baseline": -25000 },
                    { "text": "O", "size": 28 }
                  ]
                }
              ]
            }
          }
        }
      ]
    }
  ]
}

import { generatePresentation } from "@office-open/pptx";

generatePresentation({
  slides: [
    {
      children: [
        {
          shape: {
            x: "1.3cm",
            y: "1.3cm",
            width: "21.2cm",
            height: "7.9cm",
            textBody: {
              children: [
                {
                  children: [
                    { text: "E = mc", size: 28 },
                    { text: "2", size: 20, baseline: 30000 },
                  ],
                },
                {
                  children: [
                    { text: "H", size: 28 },
                    { text: "2", size: 20, baseline: -25000 },
                    { text: "O", size: 28 },
                  ],
                },
              ],
            },
          },
        },
      ],
    },
  ],
});

Superscript and Subscript

Use the baseline property (in 1000ths of a percent):

{ text: "x", size: 24 }
{ text: "2", size: 16, baseline: 30000 } // x² (superscript)
{ text: "n", size: 16, baseline: -25000 } // Subscript

Common Math Symbols (Unicode)

{ text: "π", size: 24 } // pi
{ text: "Σ", size: 24 } // Sigma (sum)
{ text: "∫", size: 24 } // Integral
{ text: "√", size: 24 } // Square root
{ text: "±", size: 24 } // Plus-minus
{ text: "≠", size: 24 } // Not equal
{ text: "≤", size: 24 } // Less than or equal
{ text: "≥", size: 24 } // Greater than or equal
{ text: "→", size: 24 } // Right arrow
{ text: "×", size: 24 } // Multiplication
{ text: "÷", size: 24 } // Division
{ text: "∞", size: 24 } // Infinity

Complex Equation Layout

Build multi-line equations using multiple paragraphs:

{
  "slides": [
    {
      "children": [
        {
          "shape": {
            "x": "1.3cm",
            "y": "1.3cm",
            "width": "21.2cm",
            "height": "9.3cm",
            "textBody": {
              "children": [
                {
                  "properties": { "alignment": "CENTER" },
                  "children": [{ "text": "Quadratic Formula", "size": 18, "bold": true }]
                },
                {
                  "properties": { "alignment": "CENTER" },
                  "children": [
                    { "text": "x = (-b ± √(b", "size": 24 },
                    { "text": "2", "size": 16, "baseline": 30000 },
                    { "text": " - 4ac)) / 2a", "size": 24 }
                  ]
                }
              ]
            }
          }
        }
      ]
    }
  ]
}

import { generatePresentation } from "@office-open/pptx";

generatePresentation({
  slides: [
    {
      children: [
        {
          shape: {
            x: "1.3cm",
            y: "1.3cm",
            width: "21.2cm",
            height: "9.3cm",
            textBody: {
              children: [
                {
                  properties: { alignment: "CENTER" },
                  children: [{ text: "Quadratic Formula", size: 18, bold: true }],
                },
                {
                  properties: { alignment: "CENTER" },
                  children: [
                    { text: "x = (-b ± √(b", size: 24 },
                    { text: "2", size: 16, baseline: 30000 },
                    { text: " - 4ac)) / 2a", size: 24 },
                  ],
                },
              ],
            },
          },
        },
      ],
    },
  ],
});

Tips

Use baseline: 30000 for superscript and baseline: -25000 for subscript.
Unicode math symbols render correctly in most presentation viewers.
For complex mathematical expressions, consider using an image of the equation rendered from LaTeX.