> ## Documentation Index
> Fetch the complete documentation index at: /llms.txt
> Use this file to discover all available pages before exploring further.

# Typing Indicator

> The three-dot chat bubble that says someone is writing: it pops in at the thread's edge exactly as messaging apps do, holds while the reply is coming, and vanishes when the message lands

# Typing Indicator

The three-dot chat bubble that says someone is writing: it pops in at the thread's edge exactly as messaging apps do, holds while the reply is coming, and vanishes when the message lands

**Typing Indicator**

```html typing-indicator.html theme={null}
<!--
  Typing Indicator - chat "someone is writing" primitive.

  Paste the markup, CSS and script into a composition. Use the timeline
  integration note at the bottom as the starting point for deterministic GSAP
  animation.

  The bubble pops in exactly as the reference footage does: scale 0.6 to 1 and
  alpha 0.4 to 1 over 0.10s on a power2.out. The reference's dots hold still;
  the optional wave in the integration note is a bounded, seek-safe extra for
  compositions that want the dots to breathe.

  Variables. The script reads each one, falls back to the declared default on
  anything missing or unrecognised, and writes the result as a custom property
  the CSS below consumes.

    - size (80 to 220, default 124, in px): bubble width. Dots and tail scale
      with it.
    - tone (dark | light, default dark): dark is the reference's iOS-dark
      bubble; light is a pale bubble for bright chat grounds.
    - tail (on | off, default on): the two shrinking circles that anchor the
      bubble to the sender's side.

  On every default the result matches the measured reference: a 124px dark
  bubble with three 17px dots and a tail.
-->

<div
  data-hf-ui-root
  class="hf-ui-typing-indicator"
  aria-label="Typing indicator"
  data-composition-variables='[
    { "id": "size", "type": "number", "role": "style", "label": "Size", "description": "Bubble width in pixels; dots and tail scale with it.", "default": 124, "min": 80, "max": 220, "step": 2, "unit": "px" },
    { "id": "tone", "type": "enum", "role": "style", "label": "Tone", "description": "Dark is the reference iOS bubble; light suits bright chat grounds.", "default": "dark", "options": [{ "value": "dark", "label": "Dark" }, { "value": "light", "label": "Light" }] },
    { "id": "tail", "type": "enum", "role": "style", "label": "Tail", "description": "The two shrinking circles anchoring the bubble to the sender side.", "default": "on", "options": [{ "value": "on", "label": "On" }, { "value": "off", "label": "Off" }] }
  ]'
>
  <div class="hf-ti-wrap" id="hf-ti-1">
    <div class="hf-ti-bubble">
      <span class="hf-ti-dot"></span>
      <span class="hf-ti-dot"></span>
      <span class="hf-ti-dot"></span>
    </div>
    <div class="hf-ti-tail1"></div>
    <div class="hf-ti-tail2"></div>
  </div>
</div>

<style>
  /* hf-ui:tokens:start */
  /* prettier-ignore */
  [data-hf-ui-root] {
    --_hf-ui-accent: var(--hf-ui-accent, #3ce6ac);
    --_hf-ui-action: var(--hf-ui-action, #eeeeee);
    --_hf-ui-action-contrast: var(--hf-ui-action-contrast, #111111);
    --_hf-ui-border: var(--hf-ui-border, #2a2a2a);
    --_hf-ui-border-strong: var(--hf-ui-border-strong, #383838);
    --_hf-ui-canvas: var(--hf-ui-canvas, #0a0a0a);
    --_hf-ui-control-border: var(--hf-ui-control-border, #686868);
    --_hf-ui-control-border-hover: var(--hf-ui-control-border-hover, #777777);
    --_hf-ui-control-height: var(--hf-ui-control-height, 40px);
    --_hf-ui-danger: var(--hf-ui-danger, #ff7878);
    --_hf-ui-data-1: var(--hf-ui-data-1, #3ce6ac);
    --_hf-ui-data-2: var(--hf-ui-data-2, #63a5ff);
    --_hf-ui-data-3: var(--hf-ui-data-3, #e9ab55);
    --_hf-ui-data-4: var(--hf-ui-data-4, #a78bfa);
    --_hf-ui-data-5: var(--hf-ui-data-5, #ff8a75);
    --_hf-ui-duration-drawer-enter: var(--hf-ui-duration-drawer-enter, 360ms);
    --_hf-ui-duration-drawer-exit: var(--hf-ui-duration-drawer-exit, 240ms);
    --_hf-ui-duration-modal-enter: var(--hf-ui-duration-modal-enter, 280ms);
    --_hf-ui-duration-modal-exit: var(--hf-ui-duration-modal-exit, 180ms);
    --_hf-ui-duration-overlay-enter: var(--hf-ui-duration-overlay-enter, 210ms);
    --_hf-ui-duration-overlay-exit: var(--hf-ui-duration-overlay-exit, 140ms);
    --_hf-ui-duration-press: var(--hf-ui-duration-press, 120ms);
    --_hf-ui-duration-state: var(--hf-ui-duration-state, 160ms);
    --_hf-ui-ease-enter: var(--hf-ui-ease-enter, cubic-bezier(0.32, 0.72, 0, 1));
    --_hf-ui-ease-exit: var(--hf-ui-ease-exit, cubic-bezier(0.23, 1, 0.32, 1));
    --_hf-ui-ease-response: var(--hf-ui-ease-response, cubic-bezier(0.23, 1, 0.32, 1));
    --_hf-ui-font-mono: var(--hf-ui-font-mono, ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace);
    --_hf-ui-font-sans: var(--hf-ui-font-sans, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif);
    --_hf-ui-hit-target: var(--hf-ui-hit-target, 44px);
    --_hf-ui-radius-control: var(--hf-ui-radius-control, 5px);
    --_hf-ui-radius-overlay: var(--hf-ui-radius-overlay, 10px);
    --_hf-ui-radius-surface: var(--hf-ui-radius-surface, 7px);
    --_hf-ui-shadow-contact: var(--hf-ui-shadow-contact, 0 8px 18px rgba(0, 0, 0, 0.38));
    --_hf-ui-shadow-inset: var(--hf-ui-shadow-inset, inset 0 1px 0 rgba(255, 255, 255, 0.035));
    --_hf-ui-shadow-modal: var(--hf-ui-shadow-modal, 0 18px 46px rgba(0, 0, 0, 0.52));
    --_hf-ui-space-1: var(--hf-ui-space-1, 4px);
    --_hf-ui-space-12: var(--hf-ui-space-12, 48px);
    --_hf-ui-space-16: var(--hf-ui-space-16, 64px);
    --_hf-ui-space-2: var(--hf-ui-space-2, 8px);
    --_hf-ui-space-3: var(--hf-ui-space-3, 12px);
    --_hf-ui-space-4: var(--hf-ui-space-4, 16px);
    --_hf-ui-space-6: var(--hf-ui-space-6, 24px);
    --_hf-ui-space-8: var(--hf-ui-space-8, 32px);
    --_hf-ui-surface: var(--hf-ui-surface, #141414);
    --_hf-ui-surface-inset: var(--hf-ui-surface-inset, #101010);
    --_hf-ui-surface-raised: var(--hf-ui-surface-raised, #1a1a1a);
    --_hf-ui-text: var(--hf-ui-text, #e5e5e5);
    --_hf-ui-text-faint: var(--hf-ui-text-faint, #7e7e7e);
    --_hf-ui-text-muted: var(--hf-ui-text-muted, #929292);
    --_hf-ui-text-strong: var(--hf-ui-text-strong, #f3f3f3);
    --_hf-ui-warning: var(--hf-ui-warning, #e9ab55);
    --_hf-ui-weight-medium: var(--hf-ui-weight-medium, 500);
    --_hf-ui-weight-regular: var(--hf-ui-weight-regular, 400);
    --_hf-ui-weight-semibold: var(--hf-ui-weight-semibold, 600);
    box-sizing: border-box;
    color-scheme: dark;
    font-family: var(--_hf-ui-font-sans);
  }
  /* prettier-ignore */
  [data-hf-ui-root] *,
  [data-hf-ui-root] *::before,
  [data-hf-ui-root] *::after {
    box-sizing: border-box;
  }
  /* prettier-ignore */
  [data-hf-theme="light"] [data-hf-ui-root],
  [data-hf-ui-root][data-hf-theme="light"] {
    --_hf-ui-accent: var(--hf-ui-accent, #087a57);
    --_hf-ui-action: var(--hf-ui-action, #171717);
    --_hf-ui-action-contrast: var(--hf-ui-action-contrast, #ffffff);
    --_hf-ui-border: var(--hf-ui-border, #e0dfdb);
    --_hf-ui-border-strong: var(--hf-ui-border-strong, #cbc9c3);
    --_hf-ui-canvas: var(--hf-ui-canvas, #f6f5f1);
    --_hf-ui-control-border: var(--hf-ui-control-border, #888888);
    --_hf-ui-control-border-hover: var(--hf-ui-control-border-hover, #6f6e68);
    --_hf-ui-danger: var(--hf-ui-danger, #a61b1b);
    --_hf-ui-data-1: var(--hf-ui-data-1, #087a57);
    --_hf-ui-data-2: var(--hf-ui-data-2, #245ea8);
    --_hf-ui-data-3: var(--hf-ui-data-3, #8a4b00);
    --_hf-ui-data-4: var(--hf-ui-data-4, #6d3fc0);
    --_hf-ui-data-5: var(--hf-ui-data-5, #a83d2d);
    --_hf-ui-shadow-contact: var(--hf-ui-shadow-contact, 0 7px 16px rgba(26, 24, 20, 0.13));
    --_hf-ui-shadow-inset: var(--hf-ui-shadow-inset, inset 0 1px 0 rgba(255, 255, 255, 0.78));
    --_hf-ui-shadow-modal: var(--hf-ui-shadow-modal, 0 18px 46px rgba(26, 24, 20, 0.18));
    --_hf-ui-surface: var(--hf-ui-surface, #ffffff);
    --_hf-ui-surface-inset: var(--hf-ui-surface-inset, #f0efeb);
    --_hf-ui-surface-raised: var(--hf-ui-surface-raised, #ffffff);
    --_hf-ui-text: var(--hf-ui-text, #171717);
    --_hf-ui-text-faint: var(--hf-ui-text-faint, #6f6e68);
    --_hf-ui-text-muted: var(--hf-ui-text-muted, #5f5f5a);
    --_hf-ui-text-strong: var(--hf-ui-text-strong, #0a0a0a);
    --_hf-ui-warning: var(--hf-ui-warning, #8a4b00);
    color-scheme: light;
  }
  /* prettier-ignore */
  [data-hf-ui-root]:focus-visible {
    outline: 2px solid var(--_hf-ui-accent);
    outline-offset: 3px;
  }
  /* prettier-ignore */
  [data-hf-rendering="true"][data-hf-ui-root],
  [data-hf-rendering="true"] [data-hf-ui-root],
  [data-hf-rendering="true"][data-hf-ui-root] *,
  [data-hf-rendering="true"] [data-hf-ui-root] *,
  [data-hf-rendering="true"][data-hf-ui-root]::before,
  [data-hf-rendering="true"][data-hf-ui-root]::after,
  [data-hf-rendering="true"] [data-hf-ui-root]::before,
  [data-hf-rendering="true"] [data-hf-ui-root]::after,
  [data-hf-rendering="true"][data-hf-ui-root] *::before,
  [data-hf-rendering="true"][data-hf-ui-root] *::after,
  [data-hf-rendering="true"] [data-hf-ui-root] *::before,
  [data-hf-rendering="true"] [data-hf-ui-root] *::after {
    animation-duration: 0s !important;
    animation-delay: 0s !important;
    transition-duration: 0s !important;
    transition-delay: 0s !important;
  }
  /* prettier-ignore */
  @media (prefers-reduced-motion: reduce) {
    [data-hf-ui-root],
    [data-hf-ui-root] *,
    [data-hf-ui-root] *::before,
    [data-hf-ui-root] *::after {
      animation-duration: 0s !important;
      animation-delay: 0s !important;
      transition-duration: 0s !important;
      transition-delay: 0s !important;
      scroll-behavior: auto !important;
    }
  }
  /* hf-ui:tokens:end */

  .hf-ui-typing-indicator {
    position: relative;
    display: inline-block;
  }
  .hf-ti-wrap {
    position: relative;
    display: inline-block;
    font-size: var(--hf-ti-size, 124px);
    will-change: opacity, transform;
  }
  .hf-ti-bubble {
    width: 1em;
    height: 0.54em;
    background: var(--hf-ti-surface, #242428);
    border-radius: 0.274em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.081em;
  }
  .hf-ti-dot {
    width: 0.137em;
    height: 0.137em;
    border-radius: 50%;
    background: var(--hf-ti-dot, #8e8e93);
    display: inline-block;
  }
  .hf-ti-tail1 {
    position: absolute;
    left: -0.016em;
    bottom: -0.032em;
    width: 0.145em;
    height: 0.145em;
    border-radius: 50%;
    background: var(--hf-ti-surface, #242428);
    display: var(--hf-ti-tail, block);
  }
  .hf-ti-tail2 {
    position: absolute;
    left: -0.113em;
    bottom: -0.113em;
    width: 0.073em;
    height: 0.073em;
    border-radius: 50%;
    background: var(--hf-ti-surface, #242428);
    display: var(--hf-ti-tail, block);
  }
</style>

<script>
  (function () {
    "use strict";

    var vars =
      window.__hyperframes && window.__hyperframes.getVariables
        ? window.__hyperframes.getVariables()
        : {};

    // Unrecognised overrides return to their declared defaults.
    function pick(table, value, fallback) {
      return Object.prototype.hasOwnProperty.call(table, value) ? value : fallback;
    }

    function clampNumber(value, min, max, fallback) {
      var n = typeof value === "number" ? value : parseFloat(value);
      if (!isFinite(n)) {
        return fallback;
      }
      return Math.min(max, Math.max(min, n));
    }

    var tones = {
      dark: { surface: "#242428", dot: "#8e8e93" },
      light: { surface: "#e9e9eb", dot: "#8e8e93" },
    };
    var tails = { on: "block", off: "none" };

    var size = clampNumber(vars.size, 80, 220, 124);
    var tone = tones[pick(tones, vars.tone, "dark")];
    var tail = tails[pick(tails, vars.tail, "on")];

    var roots = document.querySelectorAll(".hf-ui-typing-indicator");
    for (var i = 0; i < roots.length; i += 1) {
      roots[i].style.setProperty("--hf-ti-size", size + "px");
      roots[i].style.setProperty("--hf-ti-surface", tone.surface);
      roots[i].style.setProperty("--hf-ti-dot", tone.dot);
      roots[i].style.setProperty("--hf-ti-tail", tail);
    }
  })();
</script>

<!--
  Timeline integration:

  // pop-in, exactly as measured from the reference
  tl.fromTo('#hf-ti-1', { scale: 0.6, autoAlpha: 0.4 }, { scale: 1, autoAlpha: 1, duration: 0.10, ease: 'power2.out' }, startTime);

  // optional dot wave (the reference holds still) - bounded repeats keep it seek-safe
  var dots = gsap.utils.toArray('#hf-ti-1 .hf-ti-dot');
  dots.forEach(function (dot, i) {
    tl.to(dot, { y: -6, duration: 0.28, ease: 'sine.inOut', yoyo: true, repeat: 5 }, startTime + 0.1 + i * 0.14);
  });

  // dismiss
  tl.set('#hf-ti-1', { autoAlpha: 0 }, endTime);
-->
```

Copy npx hyperframes add typing-indicator to the clipboard

That writes one file: `compositions/components/typing-indicator.html`.

## Paste it into your composition

Open `compositions/components/typing-indicator.html` and copy what is inside into your own composition.
The file opens with a comment header that walks you through it.

A component has no size or duration of its own. It takes both from the composition
you paste it into.

## Variables

Every one of these has a default, so the piece works untouched. Set the ones you
want to change on the element:

| Variable | Default | Accepts | What it does |
| - | - | - | - |
| `size` | `124` | 80px to 220px, step 2px | Bubble width in pixels; dots and tail scale with it. |
| `tone` | `dark` | `dark`, `light` | Dark is the reference iOS bubble; light suits bright chat grounds. |
| `tail` | `on` | `on`, `off` | The two shrinking circles anchoring the bubble to the sender side. |

Set them with `data-variable-values` on the element that mounts it. These are the
defaults, so this behaves exactly like the preview above until you change one:

```html wrap theme={null}
<div
  data-composition-id="typing-indicator"
  data-composition-src="compositions/components/typing-indicator.html"
  data-variable-values='{"size":124,"tone":"dark","tail":"on"}'
></div>
```

Tagged `video-primitive` `chat` `mock-ui` `overlay`.

Created by Miao Yang.

## Related topics

* [Browse the complete Catalog](/catalog.md)
* [Add assets and Catalog items in the browser editor](/studio/assets-and-blocks.md)
* [Put blocks together into one video](/concepts/compositions.md)


## Related topics

- [Message Thread Reveal](/catalog/blocks/message-thread-reveal.md)
- [Touch Indicator](/catalog/components/touch-indicator.md)
- [Notes Typing](/catalog/components/notes-typing.md)


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