Accessible webinars: how to prepare live captions that help

Captioning a webinar takes more than switching on a button. People need to follow who is speaking and what is happening, read the text comfortably and know their options in advance. This guide separates captions provided by the event organizer from a personal caption tool used on an attendee’s own computer.

Before the event: ask and plan the broadcast

1. Ask about accessibility needs at registration and offer a private way to request support. Ask about languages and, where relevant, sign language interpretation or other needs.
2. Check your chosen platform. Find out how attendees turn captions on, whether they can adjust them and how a professional live captioner can provide text. Do not assume every platform works the same way.
3. Plan human support where needed. Automatic speech recognition can make mistakes, for example with accents or background noise; YouTube Help explains these limits of its automatic captions. The W3C captioning guide explains that automatic captions require review and describes professional captioning for live events.
4. Prepare accessible materials and a help channel. Share materials in advance where possible, explain how to get assistance and agree what to do if the connection, audio or captions fail.

Rehearse with the real audio and screen

Test with the actual speakers, microphone and event platform. Take turns speaking, check that voices are clear and make sure captions are legible without hiding important information. Describe essential details aloud when showing a chart or demonstration: captions do not replace that visual explanation.

Accessible captions need to convey relevant sound information as well as words and, where needed, identify speakers. The W3C accessible events checklist also recommends speaking clearly and describing important visual information.

What if an attendee wants captions on their own computer?

Aurora Subtitles is an Early Access application for Windows 11 x64 that can show captions or translations of system audio in an on-screen overlay. Its core processing is designed to run on the compatible computer; some operations, such as license activation or model downloads, may need a connection. Quality depends on the audio, language, model and computer.

This can be personal support during a session, but it does not enable captions for every attendee or replace professional support or accommodations an individual needs. The optional assistant uses a separate network route and can send text to Codex/OpenAI; it requires a separate account and access. Before using any tool in a meeting, check the event’s privacy terms and conditions.

After the event

If you share a recording, review its captions before publishing and provide a way to report errors. Gather attendee feedback and note which settings and support worked for the next session.

If you want personal captions for your PC audio, explore Aurora Subtitles. If you are organizing an event, first decide what support your audience needs and how the platform will provide it.