How to use Slides

Slides is a free online presentation maker: build a deck in your browser, show it full screen, and run live polls and quizzes your audience answers on phones.

Start here
Main features
Sign-in & privacy
Questions

1Start here

Just looking? Tap ▶ Click through a demo (or ▶ Demo decks on a phone) to see a finished deck.
Tap Sign In, then + New Presentation to open the builder.
Add slides with + Title or + Content, drop in blocks such as Heading, Text, Poll or MCQ, and tap Save.
Back on the Slides home, tap Present → on your deck. ⛶ Fullscreen fills the screen; 🪟 Presenter opens your notes in a second window.
To involve the room, tap 🔴 Go Live. People open cryosim.com/projects/slides/audience (or scan the ⊞ QR code), type the 6-digit code and tap Join →.

2The main features

Visual builder

Build slides from ready-made blocks: headings, text, cards, steps, tables, comparisons, images, video, polls and multiple-choice questions (MCQ).

Slides home › + New Presentation (or Edit on a deck)

Present

Show a deck full screen from any browser, with a separate presenter window for your notes.

On a deck › Present → › ⛶ Fullscreen / 🪟 Presenter

Live session

Start a live session and your audience answers polls and MCQs and sends reactions from their phones. They need no account.

While presenting › 🔴 Go Live; audience: 📡 Join a Live Session

Courses (folders)

Group your decks into courses so a long training programme stays tidy.

Slides home › 📚 New Course

Share a deck

Give another CryoSim user a copy they can present but not edit. They accept it under 🤝 Shared with me.

On your deck › 🤝 Share

PowerPoint export

Download a deck as a .pptx file to open in PowerPoint.

In the builder › Export PPTX

3Sign-in, data & privacy

Building, saving and sharing decks needs a free CryoSim account. The demo decks open without one.
Your decks are saved on the CryoSim server under your account.
People joining a live session need no account. They can type a name or tap “Skip — join anonymously”.
A deck you share is present-only for the other person: they can never edit or delete it.

4Common questions

How does my audience join?

Tap 🔴 Go Live while presenting. They open cryosim.com/projects/slides/audience or scan the ⊞ QR code, type the 6-digit code and tap Join →.

Do my audience need to install anything?

No. They use the phone’s web browser and need no account.

Can I share a deck with someone?

Yes. Tap 🤝 Share on your deck and type their CryoSim account email. They must already have signed up on cryosim.com.

Can I use it with PowerPoint?

You can download any deck as a PowerPoint file with Export PPTX in the builder.

Can I try it before signing up?

Yes. The demo decks on the Slides home open without an account.

Is Slides free?

Yes. Building, saving and presenting decks needs only a free CryoSim account, and your audience never pays or signs in.