Embed 4All Captions in a Website

Place an approved 4All viewer/output in an iframe with correct sizing, language, theme, and domain policy.

Best for: Event producers, display operators, accessibility leads, broadcast/AV engineers, web teams, and authorized remote operators.

Before you start

Availability depends on event access, plan entitlements, destination enablement, language configuration, and supported browser/display/network behavior.

• Use the correct event and final source/target language configuration.
• Know the physical or web destination, resolution, audience, privacy level, and monitoring owner.
• Test the final receiving screen, embed, graphics path, or operator device—not only the setup preview.

Step by step

1. Choose destination. Use viewer or another embeddable audience output, not an authenticated dashboard/control.
2. Copy approved embed code/URL. Confirm event and environment.
3. Set iframe size/responsiveness. Provide mobile-friendly height/width and avoid double scrolling.
4. Set language/theme parameters. Use only documented parameters and enabled locales.
5. Configure allowed domains. Allow the exact HTTPS hostnames required.
6. Set browser policy. Review sandbox, allow, autoplay/TTS, fullscreen, and privacy headers.
7. Test signed out. On the real site/domain, desktop and mobile.
8. Test live/reconnect. Verify caption freshness, language switching, and page navigation.

What success looks like: The intended audience or operator receives the correct event, language, styling, and control level with a documented reconnect and fallback path.

Check your setup

• The iframe loads on approved domains, fits the page, and provides the intended caption experience without exposing controls.

Troubleshooting

Blank/refused frame

Check allowed domain, CSP/frame policy, HTTPS/mixed content, and correct URL.

Wrong language/theme

Review parameters, enabled locales, stored viewer preference, and event defaults.

TTS blocked

Iframe/browser autoplay and permission policy may require explicit user interaction/allow attribute.

Security and operational notes

• Only embed public approved destinations.
• Allowed-domain lists are security controls.
• Disclose attendee data handling.

Related guides

• Embed Parameters, Allowed Domains, and Troubleshooting
• Viewer Settings
• Customize Lobby Branding and Privacy