Font Size

Choose the font size used by selected text.

Setup

Start with the packages in Getting Started. Install @tiptap/extension-text-style at the same version as your other Tiptap packages. The complete example below registers the feature and renders its UI — pick the React or the Vue tab. In an existing editor, merge the imports and extension entries into your setup, and place the controls inside your existing RichTextProvider.

React

'use client';

import { EditorContent, useEditor } from '@tiptap/react';
import { Document } from '@tiptap/extension-document';
import { Paragraph } from '@tiptap/extension-paragraph';
import { Text } from '@tiptap/extension-text';
import { RichTextProvider, FontSize, RichTextFontSize } from 'ai-sparkwrite-editor';
import { TextStyle } from '@tiptap/extension-text-style';
import 'ai-sparkwrite-editor/style.css';

const extensions = [Document, Paragraph, Text, TextStyle, FontSize];

export default function FontSizeExample() {
  const editor = useEditor({
    extensions,
    content: '<p>Try this feature here.</p>',
    immediatelyRender: false,
  });

  if (!editor) return null;

  return (
    <RichTextProvider editor={editor}>
      <RichTextFontSize />
      <EditorContent editor={editor} />
    </RichTextProvider>
  );
}

Vue

<script setup lang="ts">
import { EditorContent, useEditor } from '@tiptap/vue-3';
import { Document } from '@tiptap/extension-document';
import { Paragraph } from '@tiptap/extension-paragraph';
import { Text } from '@tiptap/extension-text';
import { TextStyle } from '@tiptap/extension-text-style';
import { FontSize, RichTextProvider, RichTextFontSize } from 'ai-sparkwrite-editor/vue';
import 'ai-sparkwrite-editor/style.css';

const extensions = [Document, Paragraph, Text, TextStyle, FontSize];

const editor = useEditor({
  extensions,
  content: '<p>Try this feature here.</p>',
});
</script>

<template>
  <RichTextProvider :editor="editor">
    <RichTextFontSize />
    <EditorContent :editor="editor" />
  </RichTextProvider>
</template>

How to use

Register TextStyle. Configure fontSizes with CSS sizes such as 14px or objects such as { name: "Large", value: "24px" }. Use editor.chain().focus().setFontSize("18px").run() or unsetFontSize() from your own controls.

Compact variant

<RichTextFontSize compact /> renders an icon button instead of a trigger showing the current size. The wide trigger earns its space in a main toolbar, where reading the size at a glance is the point; in a menu of named rows it is the one control that will not line up, so the compact form matches the shape of RichTextLineHeight.

Configuration

import { FontSize } from 'ai-sparkwrite-editor';

FontSize.configure({
  fontSizes: ['Default', '14px', '18px', { name: 'Large', value: '24px' }],
});

Use this configured extension in place of the unconfigured one in extensions.

Source

Source • Docs