Lightning talk slides: five minutes, few slides

Five minutes. That’s it. No warm-up, no tangents, no “let me just go back a slide”.

Lightning talks are short, but they’re not easy. They punish rambling and reward ruthless editing. The good news? The slides are the simplest you’ll ever make.

Here’s how to build a lightning talk that lands.

One idea. Only one.

A lightning talk has room for exactly one idea. Not three. Not “a quick overview”. One.

Write it as a sentence before you open any slide tool:

• “Small teams should write tests for their deployment scripts first.”
• “Our meetup grew when we started recording every talk.”
• “You can cut most dashboards down to four numbers.”

If you can’t fit it in one sentence, you have a full-length talk. Save it for a longer slot.

A structure that fits five minutes

Use four beats. Every time.

Beat	Time	What happens
Hook	30 seconds	A problem, a surprise or a question the room recognises
Idea	30 seconds	Your one sentence, said plainly
Proof	3 minutes	One example, story or demo that shows it works
Takeaway	1 minute	What the audience should do or try next

Notice where the time goes. Most of it is proof. The hook and idea are quick; the example is the talk.

Pick one example, not three

Three minutes of proof sounds like a lot. It isn’t. Choose one example and go deep, rather than three you rush through.

The best examples are specific. A real script you fixed. A real change you made to your meetup. A before-and-after screen. Concrete beats general every time, because the room can picture it.

If you have a demo, rehearse it until it’s boring. Then record a short backup clip, in case the venue Wi-Fi fails at minute two.

How many slides?

Fewer than you think. Between five and ten is plenty for most lightning talks.

Some formats auto-advance: a fixed number of slides, each on screen for a set time. If your event uses one, plan your words around the timer, not the other way round. Rehearse until the clicks feel natural.

If you control the clicker, use fewer slides and let each one breathe. A slide on screen for forty seconds is fine if you’re talking about what’s on it.

Slides that work at lightning speed

The audience gets seconds per slide. Make every one readable at a glance.

• One point per slide. A headline that says something, or a single image.
• Big type. No body text. If it needs a paragraph, say it instead.
• No agenda slide. Five minutes doesn’t need a map.
• No “about me” slide. Your name is on the title slide. That’s enough.
• One chart at most, with the point written as its title.
• Code, if you must, in tiny doses. A few lines, large, with the key line highlighted.

The title slide does two jobs

It introduces the talk and it sits on screen while you’re introduced. Make it count.

• Talk title: short, specific, ideally the idea itself.
• Your name and one handle or link.
• Nothing else.

The last slide stays up longest

When you finish, the last slide often stays on screen through questions or the change-over. Use it.

• Your one-sentence idea, again.
• Where to find you or your slides.
• One action: “Try it on one script this week.”

Don’t end on “Thank you” or “Questions?”. End on the idea.

Rehearse to the clock

Lightning talks fall apart when they run long. A five-minute slot is often strictly enforced. Some events cut the microphone. Some just cut the slides.

• Run it out loud, with a timer. Not in your head. Out loud.
• Aim for four and a half minutes. Nerves and the stage both add time.
• Mark your halfway point. If you’re past the proof’s first half at three minutes, you know to speed up.
• Cut, don’t rush. If it runs long, remove a point. Talking faster just makes it harder to follow.

Run it three times. Then once more on the day if you can.

Planning a lightning session?

Organisers: give speakers a clear brief. Slot length, whether slides auto-advance, the screen ratio and the submission deadline. Send them your event’s slide template so every talk looks like the same session. How to build a speaker slide template for your event covers what to put in it.

Line up the decks in one file, in running order, before the session. Change-overs between lightning talks should take seconds, not minutes.

The lightning talk mindset

Short talks force clarity. If your idea survives five minutes, it’s a strong idea. Many longer talks started as lightning ones. For when yours grows up, how to structure a keynote presentation shows how to build the long version.