Textarea

Multi-line text field that grows with its content.

Browsers: Chrome 123+Firefox 152+
Why this version?
The auto-sized textarea uses CSS field-sizing: content. Older Firefox versions keep the textarea at its fixed size as text is entered.
Safari 26.2+
Why this version?
The auto-sized textarea uses CSS field-sizing: content. Older Safari versions keep the textarea at its fixed size as text is entered.
Tier: 0
Bundle compressed: 348 B
Forced layout budget: 0 ms
Axe budget: 0
SSR compatible: Yes
Published contract: Test harness

Playground

Textarea

Default

Autosize

React

CSS

Tailwind

/* Text fields — Input and Textarea share the same surface. Invalid state keys
   off the [data-invalid] attribute the components emit. Textarea autosize uses
   the native field-sizing (Chrome 123+) when the component sets data-autosize. */

@layer components {
  :where([data-uiify-input], [data-uiify-textarea]) {
    display: block;
    inline-size: 100%;
    max-inline-size: 24rem;
    padding-block: var(--space-sm);
    padding-inline: var(--space-md);
    border: var(--border-width) solid var(--input);
    border-radius: var(--radius-md);
    corner-shape: squircle;
    background-color: var(--card);
    color: var(--foreground);
    font-size: var(--uiify-control-text);
    line-height: var(--leading-normal);
    transition: var(--transition-colors);
  }

  :where([data-uiify-input], [data-uiify-textarea])::placeholder {
    color: var(--muted-foreground);
  }

  :where([data-uiify-input], [data-uiify-textarea]):focus-visible {
    border-color: var(--primary);
  }

  :where([data-uiify-input], [data-uiify-textarea]):disabled,
  :where([data-uiify-input], [data-uiify-textarea])[data-disabled] {
    opacity: 0.5;
    cursor: not-allowed;
  }

  :where([data-uiify-input], [data-uiify-textarea])[data-invalid],
  :where([data-uiify-input], [data-uiify-textarea]):user-invalid {
    border-color: var(--destructive);
  }

  :where([data-uiify-input], [data-uiify-textarea])[data-invalid]:focus-visible {
    outline-color: var(--destructive);
  }

  [data-uiify-textarea] {
    min-block-size: 4lh;
    resize: block;
  }

  [data-uiify-textarea][data-autosize] {
    field-sizing: content;
    resize: none;
  }

  [data-uiify-field] {
    display: grid;
    gap: var(--space-sm);
    inline-size: 100%;
    max-inline-size: 24rem;
  }

  [data-uiify-field] [data-part="label"] {
    color: var(--foreground);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    line-height: var(--leading-normal);
  }

  [data-uiify-field] [data-part="label"][data-required]::after {
    content: " *";
    color: var(--destructive);
  }

  [data-uiify-field] [data-part="description"] {
    margin: 0;
    color: var(--muted-foreground);
    font-size: var(--text-xs);
    line-height: var(--leading-normal);
  }

  [data-uiify-field] [data-part="error"] {
    margin: 0;
    color: var(--destructive);
    font-size: var(--text-xs);
    line-height: var(--leading-normal);
  }

  /* Shared presence fade when an error message is mounted. */
  @media (prefers-reduced-motion: no-preference) {
    [data-uiify-field] [data-part="error"] {
      transition: opacity var(--duration-fast) var(--ease-out);
    }

    @starting-style {
      [data-uiify-field] [data-part="error"] {
        opacity: 0;
      }
    }
  }
}

import { Textarea } from "@gunkin/uiify";

export default function Example() {
  return (
    <Textarea
      className="
        focus-visible:[outline:none]
        focus-visible:[box-shadow:0_0_0_var(--ring-width)_color-mix(in_oklch,_var(--ring)_16%,_transparent)] block
        [inline-size:100%] [max-inline-size:24rem] py-sm px-md border-[length:var(--border-width)] border-solid
        border-input rounded-md [corner-shape:squircle] bg-card text-foreground [font-size:var(--uiify-control-text)]
        [line-height:var(--leading-normal)] [transition:var(--transition-colors)] placeholder:text-muted-foreground
        focus-visible:border-primary disabled:opacity-50 disabled:cursor-not-allowed data-[disabled]:opacity-50
        data-[disabled]:cursor-not-allowed data-[invalid]:border-destructive user-invalid:border-destructive
        data-[invalid]:focus-visible:outline-destructive [min-block-size:4lh] [resize:block]
        data-[autosize]:[field-sizing:content] data-[autosize]:resize-none
      "
      aria-label="Notes"
      name="notes"
      autoSize
    />
  );
}

/* app.css */

@layer reset, ui, app, tokens, base, demo, components, utilities, theme;

@import "@gunkin/uiify/styles/reset";

@import "@gunkin/uiify/components/behavior.css";

@import "@gunkin/uiify/styles/tokens";

@import "@gunkin/uiify/styles/tailwind";

@import "tailwindcss/utilities.css";

@theme { --spacing: 0.25rem; --font-weight-normal: 400; --font-weight-medium: 500; --font-weight-semibold: 600; --font-weight-bold: 700; }

@source inline('focus-visible:[outline:none] focus-visible:[box-shadow:0_0_0_var(--ring-width)_color-mix(in_oklch,_var(--ring)_16%,_transparent)] block [inline-size:100%] [max-inline-size:24rem] py-sm px-md border-[length:var(--border-width)] border-solid border-input rounded-md [corner-shape:squircle] bg-card text-foreground [font-size:var(--uiify-control-text)] [line-height:var(--leading-normal)] [transition:var(--transition-colors)] placeholder:text-muted-foreground focus-visible:border-primary disabled:opacity-50 disabled:cursor-not-allowed data-[disabled]:opacity-50 data-[disabled]:cursor-not-allowed data-[invalid]:border-destructive user-invalid:border-destructive data-[invalid]:focus-visible:outline-destructive [min-block-size:4lh] [resize:block] data-[autosize]:[field-sizing:content] data-[autosize]:resize-none');

@layer base { :root { --uiify-control-text: var(--text-sm); } @media (pointer: coarse) { :root { --uiify-control-text: var(--text-base); } } }

/* Authored animation and registered properties used by the Tailwind skin.
 * Visual rules belong in utility recipes; only at-rule definitions live here. */
@layer components {
  @keyframes uiify-presence-in {
    from {
      opacity: 0;
      scale: var(--presence-scale);
    }
  }
}

@layer components {
  @keyframes uiify-presence-out {
    to {
      opacity: 0;
      scale: var(--presence-scale);
    }
  }
}

@property --uiify-spinner-tail {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}

@property --uiify-spinner-length {
  syntax: "<angle>";
  inherits: false;
  initial-value: 36deg;
}

@layer components {
  @keyframes uiify-spinner-rotate {
    to {
      transform: rotate(360deg);
    }
  }
}

@layer components {
  @keyframes uiify-spinner-orbit {
    0% {
      --uiify-spinner-tail: 0deg;
      --uiify-spinner-length: 36deg;
    }

    50% {
      --uiify-spinner-tail: 90deg;
      --uiify-spinner-length: 324deg;
    }

    100% {
      --uiify-spinner-tail: 360deg;
      --uiify-spinner-length: 36deg;
    }
  }
}

@layer components {
  @keyframes uiify-skeleton-pulse {
    50% {
      opacity: 0.45;
    }
  }
}

@layer components {
  @keyframes uiify-skeleton-shimmer {
    to {
      background-position: -200% 0;
    }
  }
}

@layer components {
  @keyframes uiify-skeleton-reveal {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }
}

@property --candle-body-height {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 0%;
}

@property --candle-body-top {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 50%;
}

@property --candle-slot {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 100%;
}

@property --candle-wick-height {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 0%;
}

@property --candle-wick-top {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 50%;
}

@property --candle-x {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 0%;
}

@property --candle-scale {
  syntax: "<number>";
  inherits: true;
  initial-value: 1;
}

@property --line-y {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 50%;
}

@property --line-prev-y {
  syntax: "<percentage>";
  inherits: true;
  initial-value: 50%;
}

@property --line-count {
  syntax: "<integer>";
  inherits: false;
  initial-value: 1;
}

@property --line-scale {
  syntax: "<number>";
  inherits: true;
  initial-value: 1;
}

@layer components {
  @keyframes uiify-otp-input-caret-blink {
    50% {
      opacity: 0;
    }
  }
}

API

`Textarea`

Prop	Type	Default	Description
`value`	`string`	—	Current value, making the textarea controlled.
`defaultValue`	`string`	—	Starting value for the uncontrolled textarea, which the native element then owns.
`onValueChange`	`(value: string) => void`	—	Called with the new value whenever the textarea changes.
`autoSize`	`boolean`	`false`	Grows the textarea with its content using CSS field-sizing, with no JavaScript involved.
`disabled`	`boolean`	`false`	Disables the native textarea and sets the data-disabled attribute.
`readOnly`	`boolean`	`false`	Makes the value read-only while keeping the textarea focusable.
`invalid`	`boolean`	`false`	Marks the textarea invalid via aria-invalid and the data-invalid attribute.
`render`	`ReactElement \| ((props, state) => ReactElement)`	—	Replace the rendered element while keeping behavior and accessibility wiring.

Keyboard

Key	Action
`Tab`	Move focus to/from the control
`Enter` / `Space`	Activate when focused (button-like controls)

Accessibility

Uses semantic HTML where possible. Inspect rendered markup in the playground — ARIA is added only when native elements are insufficient.

Styling hooks

data-disabled

Framework

Style

Theme

Language

Textarea

Playground

Textarea

Default

Autosize

API

`Textarea`

Keyboard

Accessibility

Styling hooks