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2026-08-19 14:37:17 -05:00

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name, description

name	description
preset-attributify	Group utilities in HTML attributes instead of class

Preset Attributify

Group utilities in HTML attributes for better readability.

Installation

import { defineConfig, presetAttributify, presetWind3 } from 'unocss';

export default defineConfig({
  presets: [presetWind3(), presetAttributify()],
});

Basic Usage

Instead of long class strings:

<button
  class="bg-blue-400 hover:bg-blue-500 text-sm text-white font-mono font-light py-2 px-4 rounded border-2 border-blue-200"
>
  Button
</button>

Group by prefix in attributes:

<button
  bg="blue-400 hover:blue-500"
  text="sm white"
  font="mono light"
  p="y-2 x-4"
  border="2 rounded blue-200"
>
  Button
</button>

Prefix Self-Referencing

For utilities matching their prefix (flex, grid, border), use ~:

<!-- Before -->
<button class="border border-red">Button</button>

<!-- After -->
<button border="~ red">Button</button>

Valueless Attributify

Use utilities as boolean attributes:

<div m-2 rounded text-teal-400 />

Handling Property Conflicts

When attribute names conflict with HTML properties:

<!-- Use un- prefix -->
<a un-text="red">Text color to red</a>

Enforce Prefix

presetAttributify({
  prefix: 'un-',
  prefixedOnly: true,
});

Options

presetAttributify({
  strict: false, // Only generate CSS for attributify
  prefix: 'un-', // Attribute prefix
  prefixedOnly: false, // Require prefix for all
  nonValuedAttribute: true, // Support valueless attributes
  ignoreAttributes: [], // Attributes to ignore
  trueToNonValued: false, // Treat value="true" as valueless
});

TypeScript Support

Vue 3

// html.d.ts
declare module '@vue/runtime-dom' {
  interface HTMLAttributes {
    [key: string]: any;
  }
}
declare module '@vue/runtime-core' {
  interface AllowedComponentProps {
    [key: string]: any;
  }
}
export {};

React

import type { AttributifyAttributes } from '@unocss/preset-attributify';

declare module 'react' {
  interface HTMLAttributes<T> extends AttributifyAttributes {}
}

JSX Support

For JSX where <div foo> becomes <div foo={true}>:

import { transformerAttributifyJsx } from 'unocss';

export default defineConfig({
  transformers: [transformerAttributifyJsx()],
});

Important: Only use attributify if uno.config.* shows presetAttributify() is enabled.

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