How to Display a Live Scoreboard on a TV or Projector

You've got a TV in the gym. Or a projector for assemblies. Or a clubhouse screen that mostly shows news. You'd like it to be the scoreboard during games — without buying a $20,000 LED unit and waiting six weeks for it to ship.

It already can be. The display you've got plus a browser is enough. This guide covers the three setups that work, when to pick which, and what to do if the screen goes dark in the third quarter.

What you need

• A TV, projector, or other display with an HDMI input (or a Chromecast/Apple TV plugged into one).
• A laptop, tablet, or phone with a modern browser. Anything Chrome, Safari, or Firefox runs on is fine.
• A KeepTheScore scoreboard. Free to start.
• A device for scoring. Can be the same device driving the display, or — much better — a second device.

That's it. No proprietary scoreboard console, no installed software, no special cables beyond standard HDMI.

The simplest setup

1. Create the scoreboard, pick the sport, enter team names.
2. Click Open Display Scoreboard. A new browser tab opens with the spectator view of the scoreboard.
3. Drag that browser window onto the TV (or open the same display URL on whatever device is connected to the TV).
4. Double-click the scoreboard to put it in full-screen.

The scoreboard is now on the TV. Score from any other device using the scorekeeper link from the share dialog — phone, tablet, second laptop — and the TV updates live.

This works because the scoreboard is just a web page. Anything that can show a web page can be the display.

The three setups, and when to pick each

Pick HDMI when reliability matters. Casting and smart-TV browsers are convenient but more fragile — they depend on wifi quality and on the source device staying awake. For a one-off event, either is fine; for a weekly fixture or anything you'd hate to have fail in the third quarter, run the cable.

Option 1: HDMI from a laptop

The classic setup. A laptop on a side table near the TV, HDMI cable to the TV, scoreboard in a browser, browser in full-screen.

1. Connect the laptop to the TV with HDMI. On most laptops, the second display "extends" the desktop by default.
2. Open the scoreboard's display URL in a browser window.
3. Drag the window onto the TV's portion of the desktop.
4. Press F11 (Windows/Linux) or use the browser's full-screen menu (Mac) to fill the TV. Or just double-click the scoreboard.
5. Score from the laptop, or — much nicer — open the scorekeeper link on your phone and score from there. Keeps the scorer off the laptop and away from the cable.

If the laptop sleeps, the TV goes dark. Disable sleep/screensaver for the duration of the game. It's the most common gotcha and the easiest to forget.

Option 2: Separate control device and display device

The scoreboard lives in a browser. You can open it on any device. That includes whatever's already plugged into the TV.

• Smart TVs with a built-in browser: open the display URL right on the TV.
• A small mini-PC, an old laptop, or a Raspberry Pi hooked up to the TV via HDMI: same idea — open the display URL there and leave it.
• A Chromebook tab on the TV's HDMI input: same.

Then score from a completely different device. Your phone with the scorekeeper link. A tablet at the scorer's table. Anything. The TV's job is "show the page"; the phone's job is "update the score". They talk through KeepTheScore in the background.

This is the cleanest setup for venues that host games regularly. Once the TV's display device is configured, it just works — no laptop to lug in.

You're using the device's browser, not a KeepTheScore app — there's no native smart-TV or projector integration to install. The "app" is the web page.

Option 3: Cast or mirror the browser window

If running an HDMI cable isn't practical — long room, ceiling-mounted projector — casting the browser window to the TV via Chromecast or Apple TV works.

• Chromecast (Google Cast). In Chrome, click the three-dot menu, Cast, pick your Chromecast, choose "Cast tab". The scoreboard tab is mirrored to the TV.
• Apple TV (AirPlay). Use Mac's screen mirroring to send the scoreboard tab to the TV. iPhones and iPads do the same via Control Center.

Casting is less reliable than a cable. It depends on wifi, on the cast device staying connected, on the source device not getting interrupted. It works fine for one-off games; for a regular weekly fixture, get the cable.

Casting also is not a native built-in scoreboard app on the TV. You're mirroring a browser window. If the source device goes to sleep, the cast stops.

Projector setup notes

Projectors share the same browser-tab idea as TVs, but they have a few quirks worth planning around:

• Resolution. Set the source device's display output to the projector's native resolution — most commonly 1920×1080 or 1280×720. A mismatch is what produces the cut-off edges in the troubleshooting section below.
• Aspect ratio. Most modern projectors are 16:9, which matches the scoreboard's default layout. If you're projecting onto a 4:3 screen or a non-standard surface, the scoreboard will letterbox — usable, but the score is smaller than the screen could fit.
• Cable adapters. Most laptops shipped in the last few years don't have HDMI. A USB-C-to-HDMI or Mini DisplayPort-to-HDMI adapter is the most common kit gap on game day — bring spares, because borrowing the gym's last working adapter ten minutes before tipoff is not a plan.
• Placement. Mount the projector so the bottom of the image clears people's heads at the back of the room. For ceiling-mounted projectors in gyms, keep the throw distance short enough to fill the screen without keystone tilt; aggressive tilt distorts the score numerals and makes the clock harder to read from a distance.
• Readability from the back of the room. Walk to the furthest seat before the game and look at the score. If you have to squint, switch to the larger Scoreboard layout from the share dialog (rather than the slim Scorebug) — layout options vary by sport, and the fuller layout shows the numbers larger.
• Ambient light. Projectors lose out to direct daylight. Evening games and dimly lit gyms are fine; outdoor afternoon games and sun-flooded halls struggle. For those, a TV or LED panel is the better display, not a projector limitation you can configure around.

Why a browser scoreboard beats dedicated hardware (in most small venues)

A purpose-built LED scoreboard for a gym is typically $8,000–$50,000 once installation is included. It runs one sport. It's bolted to the wall. The keypad is proprietary.

The TV in your gym already cost a few hundred to a few thousand dollars and is paid for. A laptop or Chromecast that drives it is anywhere from $30 to a few hundred. The software is free to start. It runs every sport. It moves between venues. Repairs are "swap the laptop" rather than "wait for the vendor's service call".

Outdoor stadiums, large arenas, and venues where the scoreboard is part of the brand identity still buy dedicated hardware. For most school gyms, community halls, and club venues, the TV-plus-browser route covers the requirement at a fraction of the cost. For a deeper look at the trade-offs, see our digital scoreboards and LED scoreboard software posts.

Best layouts for big-screen display

KeepTheScore offers different layouts per sport, surfaced from the share dialog. For a TV or projector showing the game to spectators in the room, you generally want the larger, fuller layout — the one labelled Scoreboard rather than Scorebug. The smaller scorebug layout is designed to sit on top of a livestream, not fill a 75" wall.

Some layouts use a teams stacked arrangement (one team above the other); others put the two teams side by side. Stacked layouts read better from far away in narrow gyms; side-by-side is more compact.

Layout availability varies by sport, and some layouts intentionally hide elements like team logos or extra stats to keep the strip thin. If a stat you want on the wall isn't showing, switch to the larger Scoreboard layout from the share dialog.

Troubleshooting

TV is showing a blank scoreboard or a loading spinner. Refresh the browser tab on the device driving the TV. If it still won't load, open the same URL on a phone — if that loads, the display device lost its internet. If it doesn't, the display URL itself was mistyped or expired.

Clock is showing the wrong time. The clock runs off the scorer's device clock. If the scorekeeping device has the wrong time, the scoreboard clock will too. Set the scoring device to automatic time and the problem goes away.

Score isn't updating on the TV. Score changes are pushed live in normal use. If the TV is stuck on an old number, it's almost always a network drop on the display device — refresh the browser tab. If it happens repeatedly, the TV's network is flaky; consider switching to a wired connection or a different wifi network.

Projector image is cut off / scoreboard runs off the edge. This is the projector's resolution settings, not the scoreboard. Match the laptop's output resolution to the projector's native resolution (often 1920×1080 or 1280×720). Double-clicking the scoreboard to full-screen also rescales it to fit.

TV goes dark in the middle of a game. Almost always the source device going to sleep. Set the laptop or display device to "never sleep" while plugged in. Disable screensavers.

Casting keeps dropping. Casting is sensitive to wifi quality. If casting is unreliable, the cure is HDMI. It's worth running the cable for a regular fixture even if it's a bit ugly during the install.

Get the display URL

Free plan, no credit card. Create the scoreboard, copy the display URL into the browser on whatever device is connected to your TV or projector, double-click to full-screen, and you're showing live scores on a screen that was sitting empty an hour ago.

For more on driving large displays — LED walls, multi-TV setups, projector configuration — see the TV scoreboard documentation and the LED scoreboard software guide.

FAQ

Do I need a smart TV?

No. A regular TV with an HDMI input is fine, driven by a laptop, mini-PC, Chromecast, or Apple TV. Smart TVs with a built-in browser remove the need for a separate device — the TV opens the scoreboard URL directly.

Can I run the scoreboard and score from the same laptop?

Yes, but it's not ideal. The scorer has to share screen real estate with the spectator view, and any accidental click or window switch shows on the TV. Much better: one device drives the TV (it can stay untouched), and a phone with the scorekeeper link does the actual scoring.

Will the scoreboard fill the screen on a 75" TV?

Yes. Double-click the scoreboard to put it in full-screen, or use the browser's full-screen mode (F11 on Windows, browser menu on Mac). The graphics scale to fit any reasonable screen size.

Can I show two scoreboards at once on different TVs?

Yes. Open the same display URL on each device driving each TV. They all stay in sync — the scorer updates the score once, and every TV showing the URL updates. Useful for venues with multiple courts or rooms.

Does this work with a projector?

Yes. A projector with an HDMI input is the same as a TV for this purpose. Match the laptop's resolution to the projector's native resolution and full-screen the browser. Outdoor projectors are limited by ambient light — they work in evening games but struggle in daylight, which is a projector limitation, not a scoreboard one.

Will the scoreboard keep running if the wifi drops for a minute?

The display will hold the last state it received and resume updating when the connection comes back. For brief drops, you'll usually see the score catch up to the live state within a second of reconnection.

Are some sports better suited to a TV than others?

All supported sports work. Layouts vary — basketball, hockey, football, and soccer have the most developed layouts for big-screen display. Smaller-list sports may have a single layout that works fine but with fewer options.