Live Subtitles for Trade Show Presentations

Live subtitles for trade show presentations help when the hall is loud and the audience speaks more than one language. This guide covers setup, slides, speaker habits and a backup plan.

Start free See the trade show page

Why subtitles help in a trade show hall

Trade show stages are rarely quiet. Neighboring booths play video, the hall echoes, and speakers are often amplified through a system the audience hears badly from the back.

Subtitles solve two problems at once. People who cannot hear well can still follow. People who speak another language can read along instead of guessing.

A mixed-language audience is normal at an international show. Big events like Canton Fair, CES, IFA or MWC draw visitors from many countries, and your talk will reach people who are comfortable in one language and only partly in another.

Subtitles on a big screen put the words in front of everyone at once, with no headsets to hand out. For the full picture of how this fits an exhibitor plan, see the trade show page.

What you need

The kit is small. Keep it that way, because every extra cable is something that can fail ten minutes before your slot.

A laptop or tablet with Speed Translate AI open in a modern browser.
A microphone close to the speaker. A headset or lapel mic works better than a room mic.
A projector, LED wall or second screen for the captions.
A reliable internet connection. Test venue Wi-Fi, or carry a hotspot as backup.
A second person to watch the captions during the talk, if you can spare one.

Set up the big screen

The Subtitles screen in Speed Translate AI can show on a projector or LED wall. The simplest setup is to connect a second computer to the screen and open the subtitle link there.

The app gives you a link, labeled Copy OBS URL. It provides a transparent subtitle source. You can add it to OBS or a livestream, and it also works on a second computer connected to the screen. The presenter keeps the app open and recording on their own device.

The speaker's own words appear as they speak. Each translated sentence follows a few seconds later. Tell your audience that, so nobody thinks the screen is lagging.

For more detail, read the big screen subtitles page.

Design slides with caption space

Captions need room. If your slides fill the whole screen, subtitles will sit on top of your content and both become hard to read.

Leave the bottom fifth of each slide empty of text and logos. If the captions run along the bottom, nothing important should live there.

Use fewer words per slide. People cannot read slide text and subtitles at the same time. Pick one message per slide and say the detail out loud.

Use strong contrast. White text on a dark band reads well from far away. Avoid busy photographs behind the caption area.

Check your deck on the real screen at the venue if you can. Text that looks fine on a laptop can vanish on an LED wall.

Speaker habits that make captions better

Speech recognition works best with clear, steady speech. A few habits make a large difference.

Speak at a normal pace and pause between ideas. Pauses give the captions time to catch up and give the audience time to read.

Say product names and people's names clearly. If you use model numbers, say them slowly. Add them to the company knowledge list in the app before the talk, so translations use them correctly.

Avoid jokes that depend on a pun or a local idiom. They rarely survive translation.

Finish sentences. Trailing off mid-thought leaves a half sentence on screen.

If a question comes from the audience, repeat it into the mic before you answer. The caption cannot hear the back of the room.

Add QR captions for listeners

A big screen shows one or two languages. Listeners who want their own language can use QR Code Join.

The presenter opens the app and a QR code appears. Listeners scan it with their phone camera, pick their own language and read live captions in the phone browser. No app and no account are needed for listeners.

Put the QR code on a slide near the start and again at the end. Say out loud what it does: scan to read this talk in your language.

This pairs well with the big screen. The screen serves the whole room, and the QR code serves each person individually. See the work page for how this looks in a conference setting, and live translation for exhibitors for the booth side.

Test everything the day before

Do a full dry run at the venue, or as close as you can get.

Check the microphone distance. Speak from the stage position and look at the captions. Adjust the mic if words are missing.

Check the Wi-Fi at the stage, not just in the hall entrance. If the signal is weak, use a hotspot or a wired connection.

Check the screen. Is the caption text large enough from the back row? Does it overlap your slides?

Check the QR code. Scan it with two different phones and confirm the captions appear in the language you choose.

Try a short talk with another person watching and note any wrong words. Add those terms to your company knowledge list.

Have a backup plan

Something will go wrong at some point. Decide in advance what you will do.

If the Wi-Fi drops, switch to your hotspot. Keep it charged and already paired.

If the screen connection fails, tell the audience to use the QR code and read captions on their phones.

If the captions stop, carry on speaking and keep your slides clear. A good talk should still work without subtitles.

Keep a printed one-page summary of your key points in the main languages. It helps if everything else fails.

For anything contractual or technical that must be exact, follow up in writing after the talk. Captions are a convenience, not a record. A free hour every month on every account makes it easy to practice first; see pricing for event passes.

Do I need special equipment for live subtitles?

No. A laptop or tablet with a browser, a microphone near the speaker, and a screen or projector are enough. Test your venue Wi-Fi first, or bring a hotspot.

Can the subtitles appear in a livestream too?

Yes. The Copy OBS URL link gives a transparent subtitle source you can add to OBS or a livestream.

Do listeners need to install anything?

No. With QR Code Join they scan a code, pick a language and read live captions in their phone browser. No app and no account.

Are the captions exact enough for contracts?

Treat them as a convenience. For contract terms, safety, legal or medical details, confirm in writing or use a human interpreter.