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

# Testimonial Card

> Reveals a customer quote at reading pace, then settles its avatar, author name, and handle beneath as a clean proof beat.

export const InstallCommand = ({command}) => {
  const [copied, setCopied] = React.useState(false);
  const copy = async () => {
    try {
      if (navigator.clipboard && window.isSecureContext) {
        await navigator.clipboard.writeText(command);
      } else {
        const previous = document.activeElement;
        const scratch = document.createElement("textarea");
        scratch.value = command;
        scratch.setAttribute("readonly", "");
        scratch.style.position = "fixed";
        scratch.style.opacity = "0";
        document.body.appendChild(scratch);
        scratch.select();
        document.execCommand("copy");
        document.body.removeChild(scratch);
        previous?.focus?.();
      }
      setCopied(true);
      setTimeout(() => setCopied(false), 2000);
    } catch {}
  };
  return <div className="hf-install-command not-prose my-4 flex items-stretch overflow-hidden rounded-xl border border-zinc-200 bg-zinc-50 dark:border-zinc-800 dark:bg-zinc-900">
      <code className="flex-1 overflow-x-auto whitespace-nowrap border-r border-zinc-200 px-4 py-3 font-mono text-sm text-zinc-800 dark:border-zinc-800 dark:text-zinc-100">
        {command}
      </code>
      <button type="button" onClick={copy} data-copied={copied ? "true" : "false"} aria-label={`Copy ${command} to the clipboard`} className="hf-install-copy">
        <svg className="hf-install-copy-clipboard" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 18 18" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
          <path d="M14.25 5.25H7.25C6.14543 5.25 5.25 6.14543 5.25 7.25V14.25C5.25 15.3546 6.14543 16.25 7.25 16.25H14.25C15.3546 16.25 16.25 15.3546 16.25 14.25V7.25C16.25 6.14543 15.3546 5.25 14.25 5.25Z" />
          <path d="M2.80103 11.998L1.77203 5.07397C1.61003 3.98097 2.36403 2.96397 3.45603 2.80197L10.38 1.77297C11.313 1.63397 12.19 2.16297 12.528 3.00097" />
        </svg>
        <svg className="hf-install-copy-check" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 18 18" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
          <path d="M2.75 9.5L6.5 13.25L15.25 4.5" />
        </svg>
      </button>
      <span className="hf-install-copy-status" role="status" aria-live="polite">
        {copied ? "Copied" : ""}
      </span>
    </div>;
};

<iframe className="w-full aspect-video rounded-xl border-0 bg-zinc-100 dark:bg-zinc-800" title="testimonial-card preview" loading="lazy" srcDoc={`<!doctype html><html><head><meta charset="utf-8"><style>html,body{margin:0;height:100%;overflow:hidden;background:transparent}hyperframes-player{display:block;width:100%;height:100%}</style><script src="https://cdn.jsdelivr.net/npm/@hyperframes/player@0.7/dist/hyperframes-player.global.js"><\/script></head><body><script>fetch("/public/catalog/components/testimonial-card.json").then(function(r){return r.json()}).then(function(d){var p=document.createElement("hyperframes-player");p.setAttribute("srcdoc",d.html);p.setAttribute("controls","");p.setAttribute("autoplay","");p.setAttribute("loop","");p.setAttribute("muted","");p.setAttribute("poster","https://static.heygen.ai/hyperframes-oss/docs/images/catalog/components/testimonial-card.png");document.body.appendChild(p)});<\/script></body></html>`} />

## Install

<InstallCommand command="npx hyperframes add testimonial-card" />

That writes one file: `compositions/components/testimonial-card.html`.

## Paste it into your composition

Open `compositions/components/testimonial-card.html` and copy what is inside into your own composition.

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                                         |
| -------- | --------------------------- | ---------------- | ---------------------------------------------------- |
| `quote`  | `This changed how we ship.` | string           | Customer testimonial copy revealed at reading pace.  |
| `author` | `Ken Tanaka`                | string           | Name attributed to the testimonial.                  |
| `handle` | `@ken`                      | string           | Role or social handle shown beneath the author name. |
| `rating` | `5`                         | 0 to 5, step 0.1 | Visible customer rating from zero to five stars.     |

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="testimonial-card"
  data-composition-src="compositions/components/testimonial-card.html"
  data-variable-values='{"quote":"This changed how we ship.","author":"Ken Tanaka","handle":"@ken","rating":5}'
></div>
```

## Source

<Accordion title={`testimonial-card.html`}>
  ```html theme={null}
  <!doctype html>
  <!--
    testimonial-card: HyperFrames video primitive (ui-props / holdable / prove)

    Concept: a token-themed testimonial card proves a claim in one clean reveal.
    The rating and quote rise into reading position first, then the avatar,
    author name, and handle settle beneath with a small stagger.

    Compiled-from evidence: fixture social-proof shelf, GAP evidence from the
    A1+A2 convergent miss. Both consumer simulations needed a testimonial proof
    beat, and the fixture freezes reading-pace discipline as its governing law.

    Use when: a scene needs customer testimony to substantiate a product claim
    without recreating a platform-specific social post.

    Variables:
      - quote (string, default "This changed how we ship."): testimonial copy.
      - author (string, default "Ken Tanaka"): attributed customer name.
      - handle (string, default "@ken"): role or social handle beneath the name.
      - rating (number, 0 to 5, default 5): visible star rating.

    Envelope (holdable):
      IN   1.50s fixed quote reveal followed by attribution settle.
      HOLD elastic and deliberately still for reading.
      OUT  0.45s fixed release fade.
      If D is shorter than 1.95s, IN and OUT scale together. The timeline is
      never time-scaled, and HOLD remains the only elastic phase.

    Sync points:
      - quote-readable at 0.82s into IN.
      - attribution-settled at 1.50s, the end of IN.
      Both offsets compress only with short durations and never enter HOLD.

    Sound cues: none. The proof beat has no discrete impact event.

    Mount contract: this file is a template-wrapped sub-composition. The host
    owns dimensions. #root fills that box with inset:0 and container-type:size,
    carries no data-width or data-height, and registers one paused GSAP timeline
    under the hardcoded composition id "testimonial-card".
  -->
  <html
    lang="en"
    data-composition-variables='[
      { "id": "quote", "type": "string", "role": "content", "label": "Quote", "description": "Customer testimonial copy revealed at reading pace.", "default": "This changed how we ship." },
      { "id": "author", "type": "string", "role": "content", "label": "Author", "description": "Name attributed to the testimonial.", "default": "Ken Tanaka" },
      { "id": "handle", "type": "string", "role": "content", "label": "Handle", "description": "Role or social handle shown beneath the author name.", "default": "@ken" },
      { "id": "rating", "type": "number", "role": "content", "label": "Rating", "description": "Visible customer rating from zero to five stars.", "default": 5, "min": 0, "max": 5, "step": 0.1 }
    ]'
  >
    <head>
      <meta charset="UTF-8" />
      <title>Testimonial Card</title>
    </head>
    <body>
      <template>
        <div id="root" data-composition-id="testimonial-card" data-duration="4" data-fps="30">
          <style>
            *,
            *::before,
            *::after {
              box-sizing: border-box;
            }

            #root {
              position: absolute;
              inset: 0;
              container-type: size;
              isolation: isolate;
              overflow: hidden;
              background: var(--bg);
              color: var(--fg);
              font-family: var(--font-body);
            }

            .tc-clip {
              width: 100%;
              height: 100%;
              display: grid;
              place-items: center;
              padding: 6cqh 6cqw;
            }

            /* EDIT ZONE: card proportions and type scale. Paint is owned only
               by theme-contract tokens, and every measurement resolves from
               the host container. GSAP owns all transforms and opacity. */
            .tc-card {
              width: min(86cqw, 128cqh);
              display: grid;
              gap: min(4.6cqw, 4.6cqh);
              padding: min(6.5cqw, 6.5cqh);
              overflow: hidden;
              border: 0.16cqh solid var(--border);
              border-radius: var(--radius);
              background: var(--surface);
              box-shadow: 0 3cqh 8cqh color-mix(in srgb, var(--bg) 68%, transparent);
            }

            .tc-proof {
              display: grid;
              gap: min(3.2cqw, 3.2cqh);
              will-change: transform, opacity;
            }

            .tc-rating {
              display: flex;
              align-items: center;
              gap: min(2cqw, 2cqh);
              width: max-content;
              color: var(--muted);
              font-family: var(--font-mono);
              font-size: min(2.4cqw, 2.4cqh);
              font-weight: 650;
              line-height: 1;
            }

            .tc-stars {
              position: relative;
              display: inline-block;
              color: var(--muted);
              font-size: min(3.4cqw, 3.4cqh);
              letter-spacing: 0.18em;
              line-height: 1;
              white-space: nowrap;
            }

            .tc-stars-fill {
              position: absolute;
              inset: 0 auto 0 0;
              width: var(--tc-rating-fill);
              overflow: hidden;
              /* The earned portion of the rating is the data. Flat ink over the
                 muted track says it by value, with no second hue. */
              color: var(--fg);
              white-space: nowrap;
            }

            .tc-quote {
              margin: 0;
              color: var(--fg);
              font-family: var(--font-display);
              font-size: min(5.2cqw, 5.2cqh);
              font-weight: 650;
              line-height: 1.23;
              letter-spacing: -0.025em;
              text-wrap: balance;
            }

            .tc-attribution {
              display: grid;
              grid-template-columns: auto minmax(0, 1fr);
              grid-template-rows: auto auto;
              column-gap: min(2.7cqw, 2.7cqh);
              row-gap: min(0.65cqw, 0.65cqh);
              align-items: center;
            }

            .tc-avatar {
              grid-row: 1 / 3;
              display: grid;
              place-items: center;
              width: min(8.4cqw, 8.4cqh);
              aspect-ratio: 1;
              border: 0.16cqh solid color-mix(in srgb, var(--fg) 20%, transparent);
              border-radius: 50%;
              /* Placeholder person: a single (front) avatar circle at L1, with
                 the initials knocked out in the ground colour. */
              background: color-mix(in srgb, var(--fg) 72%, var(--surface));
              color: var(--bg);
              font-family: var(--font-display);
              font-size: min(2.65cqw, 2.65cqh);
              font-weight: 780;
              letter-spacing: 0.03em;
            }

            .tc-author {
              min-width: 0;
              align-self: end;
              color: var(--fg);
              font-family: var(--font-display);
              font-size: min(3.2cqw, 3.2cqh);
              font-weight: 700;
              line-height: 1.08;
            }

            .tc-handle {
              min-width: 0;
              align-self: start;
              color: var(--muted);
              font-size: min(2.35cqw, 2.35cqh);
              line-height: 1.15;
            }

            .tc-attribution-item {
              will-change: transform, opacity;
            }
          </style>

          <div
            id="testimonial-card-clip"
            class="tc-clip clip"
            data-start="0"
            data-duration="4"
            data-track-index="0"
          >
            <article class="tc-card" aria-label="Customer testimonial">
              <div class="tc-proof">
                <div class="tc-rating" role="img" aria-label="5 out of 5 stars">
                  <span class="tc-stars" aria-hidden="true">
                    ★★★★★
                    <span class="tc-stars-fill">★★★★★</span>
                  </span>
                  <span class="tc-rating-value" aria-hidden="true">5 / 5</span>
                </div>
                <blockquote class="tc-quote"></blockquote>
              </div>

              <footer class="tc-attribution">
                <div class="tc-avatar tc-attribution-item" aria-hidden="true"></div>
                <div class="tc-author tc-attribution-item"></div>
                <div class="tc-handle tc-attribution-item"></div>
              </footer>
            </article>
          </div>

          <script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
          <script>
            (function () {
              "use strict";

              var root = document.getElementById("root");
              var compositionId = "testimonial-card";
              var card = root.querySelector(".tc-card");
              var proof = root.querySelector(".tc-proof");
              var quoteEl = root.querySelector(".tc-quote");
              var avatarEl = root.querySelector(".tc-avatar");
              var authorEl = root.querySelector(".tc-author");
              var handleEl = root.querySelector(".tc-handle");
              var ratingEl = root.querySelector(".tc-rating");
              var ratingValueEl = root.querySelector(".tc-rating-value");
              var attributionItems = root.querySelectorAll(".tc-attribution-item");
              var vars =
                window.__hyperframes && window.__hyperframes.getVariables
                  ? window.__hyperframes.getVariables()
                  : {};

              /* INVARIANT: getVariables() is the sole owner of content. Missing
                 values use the declared defaults, while intentional empty
                 strings remain empty. Rating zero is valid and cannot fall
                 through to the default. */
              var quoteText = vars.quote == null ? "This changed how we ship." : String(vars.quote);
              var authorText = vars.author == null ? "Ken Tanaka" : String(vars.author);
              var handleText = vars.handle == null ? "@ken" : String(vars.handle);
              var rawRating = Number(vars.rating);
              var rating = Number.isFinite(rawRating) ? Math.max(0, Math.min(5, rawRating)) : 5;
              var ratingText = Number.isInteger(rating) ? String(rating) : rating.toFixed(1);
              var initials = authorText
                .trim()
                .split(/\s+/)
                .filter(Boolean)
                .slice(0, 2)
                .map(function (part) {
                  return part.charAt(0);
                })
                .join("")
                .toUpperCase();

              quoteEl.textContent = quoteText;
              authorEl.textContent = authorText;
              handleEl.textContent = handleText;
              avatarEl.textContent = initials === "" ? "?" : initials;
              ratingEl.style.setProperty("--tc-rating-fill", rating * 20 + "%");
              ratingEl.setAttribute("aria-label", ratingText + " out of 5 stars");
              ratingValueEl.textContent = ratingText + " / 5";

              /* RETIME RANGE: these constants own the complete lifecycle. The
                 reveal uses --ease-standard's GSAP form, power2.out, with the
                 quote first and three attribution items staggered beneath. */
              var IN_BASE = 1.5;
              var OUT_BASE = 0.45;
              var QUOTE_START_BASE = 0.12;
              var QUOTE_DURATION_BASE = 0.7;
              var ATTRIBUTION_START_BASE = 0.82;
              var ATTRIBUTION_DURATION_BASE = 0.56;
              var ATTRIBUTION_STAGGER_BASE = 0.06;
              var durationValue = Number(root.dataset.duration);
              var duration = Number.isFinite(durationValue) && durationValue > 0 ? durationValue : 4;
              var scale = duration < IN_BASE + OUT_BASE ? duration / (IN_BASE + OUT_BASE) : 1;
              var IN = IN_BASE * scale;
              var OUT = OUT_BASE * scale;
              var HOLD = Math.max(0, duration - IN - OUT);
              var OUT_START = IN + HOLD;

              var tl = gsap.timeline({ paused: true });

              tl.fromTo(
                proof,
                { y: "18%", opacity: 0 },
                {
                  y: "0%",
                  opacity: 1,
                  duration: QUOTE_DURATION_BASE * scale,
                  ease: "power2.out",
                },
                QUOTE_START_BASE * scale,
              );
              tl.fromTo(
                attributionItems,
                { y: "34%", opacity: 0 },
                {
                  y: "0%",
                  opacity: 1,
                  duration: ATTRIBUTION_DURATION_BASE * scale,
                  stagger: ATTRIBUTION_STAGGER_BASE * scale,
                  ease: "power2.out",
                },
                ATTRIBUTION_START_BASE * scale,
              );
              tl.to(card, { opacity: 0, duration: OUT, ease: "power2.in" }, OUT_START);

              tl.seek(0);

              window.__timelines = window.__timelines || {};
              window.__timelines[compositionId] = tl;
            })();
          </script>
        </div>
      </template>
    </body>
  </html>
  ```
</Accordion>

Tagged `prop` `ui-props` `testimonial` `social-proof` `quote` `prove`.

## Related topics

* [Browse the complete Catalog](/catalog)
* [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
* [Build a richer composition](/go-further)


## Related topics

- [Testimonial Proof Card](/catalog/components/testimonial-proof-card.md)
- [Capstone — every technique, one journey](/prompting/capstone.md)
- [Card Resize](/catalog/components/card-resize.md)
