Decka for PowerPoint
Your slides ask the questions. The room answers.
Decka installs from inside PowerPoint and embeds as an object on the slide itself — a live poll, an AI-written quiz, an open Q&A. Your audience scans once and stays with you for the whole session.
A PowerPoint deck is open with a Decka activity running on the slide itself: Guess the Doodler. On a participant's phone beside the window a doodle of your job draws itself, lands anonymously on the slide, and the room's guesses fill the vote bars until the reveal names who drew it.
Getting started
Installed from the ribbon, in about a minute.
You install it and build activities without leaving PowerPoint — signing in is the one step that opens your browser — and your audience never installs anything at all.
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Add it from inside PowerPoint
Press Add-ins in the Home ribbon, search for Decka, and press Add. There's a Microsoft Marketplace listing too, if your IT team would rather deploy it centrally.
In Microsoft PowerPoint for Mac, the Add-ins button in the Home ribbon is clicked and a popover drops beneath it. Decka is typed into the popover's search field, one result appears — the Decka listing with its description and Terms and Conditions link — and its Add button is clicked. The popover closes and the Decka add-in lands full-bleed on the slide as a selected object showing its signed-out screen.
- 2
Sign in once
Signing in opens your browser to finish the flow, then hands the session straight back to the add-in. Your activities and workspace are waiting on the other side.
The Decka add-in fills a PowerPoint slide showing its signed-out screen. Sign In to Get Started is clicked and the add-in switches to Waiting for sign in, because sign-in opens in a separate browser. A browser window rises over PowerPoint on decka.dev, an email and password are typed and Sign in is clicked, the request is approved, and the page confirms you're all set and to return to PowerPoint. The user clicks back to PowerPoint, the add-in is still waiting, and its next status poll flips it to the signed-in activity picker.
- 3
Drop an activity on a slide
Pick a poll, quiz, or Q&A and name it. It becomes an object on that slide, sized to fill a 16:9 canvas, and it runs in place while you present.
Signed in, the Decka add-in shows its activity picker on a PowerPoint slide. The Poll tile is clicked, the create view opens, and a question and two answer options are typed — which is what enables the Launch button. Launch is pressed and the poll goes live on the slide itself, showing a QR code, a join URL, a joined counter and result bars filling as the audience answers.
Move to the next activity. The room moves with you.
Everyone scanned once. When you advance, every phone in the room switches itself over — nobody touches their handset, nobody rescans, and the code on screen changing leaves them connected.
A live Decka quiz runs on a presenting screen beside two audience phones. One phone scans the six-character code shown on screen and joins with just a name; both phones answer the question. The presenter's own phone, running the Control remote, starts the reveal, and the presenter's mouse shows the final results and then simply advances the slide. A word cloud starts and the join code on screen changes to a new one, while both phones move themselves to the new activity untouched: no rescan, no new link.
While you present
One scan, and the room follows you from activity to activity.
The part that usually breaks in live sessions is the handoff between activities. This is the part Decka is built around.
They scan once
A QR code and a six-character code sit on the slide. Participants enter a name and nothing else — no account, no install, no email address.
You move on; their phones move with them
Advance to the next activity and every connected phone switches itself over — nobody touches their handset. No rescanning, no new link, and the code on screen changing doesn't disconnect anyone already in.
Drive it from your phone
Open Control on your phone to start the quiz, reveal an answer, moderate a word cloud, or approve questions — while the slide itself stays clean. Your slides stay on your keyboard; the activity is what the phone drives.
An object on the slide, not a window beside it
Decka for PowerPoint is a content add-in. That is a specific thing in Office: the activity is an object embedded on the slide surface, saved with the file, sized to fill a standard 16:9 canvas — not a task pane docked to the side, and not a second window you alt-tab to. When you present, the poll is simply part of the slide your audience is already looking at.
It reads less of your deck than you might expect, but here is the whole of it: which presentation this is, which slide you're on, the file's name, and the presentation's tag metadata — the small key/value store Office gives add-ins, which is where Decka keeps its slide bindings. Office hands over every tag on the deck, so if another add-in has left tags there, we receive those too and ignore them. What we never read is the part that matters: your slide text, your speaker notes, or any other content — including for the AI quiz writer, which works from a topic or passage you give it rather than from the deck. If you also present in Google Slides, the Chrome extension shares the same account, activities, and plan.
FAQ
PowerPoint questions, answered
How do I install it?
The quickest route is from inside PowerPoint: press Add-ins in the Home ribbon, search for Decka, and press Add. It also has a Microsoft Marketplace listing if your organization prefers to deploy it centrally.
Which versions of PowerPoint are supported?
Microsoft 365 on Windows, Mac, and PowerPoint for the web. The add-in binds activities to individual slides, which needs the PowerPointApi 1.5 requirement set, so older perpetual releases such as PowerPoint 2016 and 2019 are not supported.
Do I need admin approval to install?
Most organizations allow Office add-ins without admin review. If yours restricts them, your IT team can allowlist Decka or deploy it centrally to everyone.
Does my audience need PowerPoint, or an account?
Neither. Only the presenter installs the add-in. Your audience scans a QR code or types a short code, enters a name, and they're in — no Microsoft account, no download, no email address.
Does Decka read my slides?
No. It reads which presentation this is, which slide you're on, the file's name, and the presentation's tag metadata — the key/value store Office gives add-ins, where Decka keeps its slide bindings. Office hands over every tag on the deck, so tags left by another add-in reach us too and are ignored. It does not read your slide text, your speaker notes, or any other slide content.
How does the AI build a quiz then?
You type a topic, or paste in text you want questions from, and Decka writes the questions and marks the correct answers. It works from what you give it rather than from the deck.
Which activities can I run?
Polls, quizzes, Q&A, word clouds, live reactions, A/B tests, Guess the Doodler, and Meeting Dodgeball. Presentation Bingo is the one exception — it binds words to specific slides, so it's built in the Decka editor rather than the add-in.
Is there a free plan?
Yes. Free covers every activity type with Decka branding, subject to a participant limit per activity. Pro removes the branding, raises the participant limits, and unlocks the Open and Pre-submission Q&A modes.
Can I use Decka in Google Slides too?
Yes — there's a Chrome extension for Google Slides. Your activities, custom backgrounds, plan, and AI credits all follow your account, so it's the same workspace either way.
Put a live poll on slide three.
Create a free account, then run your first live activity on the deck you already present from.
Create a presentation