WCAG 1.2.3: Audio Description or Media Alternative (Prerecorded)

Quick answer: If important meaning is only visible in a prerecorded video, provide audio description or a full text alternative.

What This Means

On ecommerce sites, Audio Description or Media Alternative (Prerecorded) usually shows up in repeating storefront components such as product cards, PDP media, search results, cart drawers, checkout forms, and support content. If the live experience depends on patterns like a styling video silently shows how a convertible bag changes shape with no narrated explanation. or size-guide videos point to measurements on screen without describing them in audio., disabled shoppers can lose context or get blocked before purchase.

This criterion matters because D2C teams often fix the homepage but miss reusable app blocks, campaign pages, and mobile-specific UI. The practical standard is simple: build the same outcome for keyboard users, screen-reader users, low-vision users, and anyone relying on captions, labels, structure, or predictable behavior.

For Shopify, WooCommerce, and custom storefronts, the fastest remediation path is usually template-level work. Fix the repeated component once, then retest every place it appears across browse, buy, and post-purchase journeys.

Common Violations on Ecommerce Sites

• A styling video silently shows how a convertible bag changes shape with no narrated explanation.
• Size-guide videos point to measurements on screen without describing them in audio.
• Checkout tutorial videos show error banners visually while the voiceover skips them.
• Promo films show discount codes on screen with no spoken or text equivalent.

How to Fix It

Start with the live customer journey, not isolated components in Storybook or Figma. Audit the problem on category pages, product detail pages, quick views, cart, checkout, account, and help templates.

1. Describe visual steps, labels, and state changes in narration or a text transcript.
2. Add a separate descriptive audio track when the base narration is too sparse.
3. Use a media-alternative page when rewriting the full experience is faster than editing video.
4. Audit videos for silent moments where the key selling or instructional detail is visual only.

On Shopify, fix the theme section or app block that repeats the defect. On WooCommerce and WordPress, update the template override or plugin output. In custom React or headless storefronts, move the fix into shared components so merchandisers cannot reintroduce the issue with every campaign.

Code Example

<!-- Before -->
<video controls src="sizing-demo.mp4"></video>

<!-- After -->
<video controls src="sizing-demo.mp4"></video>
<p>Transcript includes visual details: bag expands to 18 inches and hidden zipper pocket opens on the back panel.</p>

Check if your store passes WCAG 1.2.3 → Free ADA Compliance Scan