A deck about Deckmate

Slides you’d stand behind.

Your material in, a first draft out. Then mark, revise and repeat until every slide is yours, with each round a scribble and a note on the slide instead of a paragraph of directions. Present from your Mac, offline if you need to. Works with the AI you already use, from a chat to a coding agent, and never asks for your AI keys or logins.

Open the demo deck

Native Mac app, coming soon. Free to use; a one-time license removes the mark. No subscription.

Recorded in a Deckmate app test build: one round with ChatGPT (gpt-6.1-sol). The AI took 4 min 19 s; the marks, the hand-off and the AI’s work are sped up. The cup, its drops and their ripples are SVG and CSS that the AI wrote into the slide’s well-formed HTML, not a video.

1 / 14

Why Deckmate

AI makes pretty slides in minutes. Slides you’d stand behind take rounds.

In a chat, each fix starts with directions: which slide, which bullet, which chart. In Deckmate you point at it.

Why Deckmate

An AI drafts a deck in minutes.
Getting it right takes rounds.

In a chat In Deckmate

On slide 4, the second bullet... no, the one under the chart

Which bullet do you mean?

Make the title shorter

Not that slide, the one before it

Board meeting Q3: three bets Cut one?

In a chat you describe where the fix goes. Here you point at it.

deckmate.app2

2 / 14

Feedback to AI

Mark it. Your AI revises. You decide.

Press C, circle what needs to change and type a line. The pen draws on a private layer, so the slide itself does not change. The drawing and the note go to your AI together, as one round.

The loop

Your AI gets one round, revises, and you check it off

deckmate.app4

3 / 14

Slide perfecting

Three rounds from a first draft to a slide you would present

Cut two bullets. Make the chart the point. Shorten the title. Each round is one circle and one line.

Slide perfecting

Three rounds from a first draft
to a slide you would present

Board meeting Q3 plan: our three strategic bets and the overall outlook for the quarter Q3: two bets, one cut

Self-serve in two new markets
Market outlook: steady overall
Partners: three resellers
Hiring: six roles by September
Custom reports: moved to Q4

Q3 revenue impact, by bet

Self-servePartnersReports

Cut two? Make the chart the point Shorter? Done Your AI revises

First draftBy your AI
1Round 1Cut two?
2Round 2Make the chart the point
3Round 3Shorter?

deckmate.app6

4 / 14

Your AI

Works with the AI you already use.

The Claude or ChatGPT app on your Mac, either one in your browser with Google Drive, a coding agent, or copy and paste with any AI.

Deckmate holds no model and asks for no keys or logins.
Nothing goes to an AI unless you send it.
Every AI write is one Undo away.

CCThe Claude appOn your Mac, Claude Code included. It works on the deck folder.
GPTThe ChatGPT appOn your Mac, Codex included. It works on the deck folder.
WEBClaude or ChatGPT in a browserThrough Google Drive on your Mac, where the deck folder lives.
ANYAny other AICopy and paste: File > Copy Agent Prompt gives you the prompt.

5 / 14

Present

The room sees slide 12. You fix slide 37.

Audience: the slide on the projector.
Lookup: any other slide, privately. Fix it there while the room watches.
Notes in your language, beside the slide.
Timer, clock and filmstrip to keep your pace.

Pyour private PresenterFthe audience window, for the projector

6 / 14

Speaker notes

Slides in English. Notes in the language you speak.

One notes file per language, bound to slide ids, not page numbers.
Press L in Presenter to switch languages.
Ask your AI to translate the notes, and it writes the new file.

Speaker notes

Speaker notes in the language you present in

One notes file per language,
bound to slide ids, not page numbers.

Press L in Presenter
to switch languages.

Ask your AI to translate the notes,
and it writes the new file.

English Slovensky Deutsch Français Español

A−A+

In one line

Notes in the language you present in.

Key line

Press L: same slide, same note, your language.

V jednej vete

Poznámky v jazyku, v ktorom prezentuješ.

Kľúčová veta

Stlač L: ten istý slajd, tá istá poznámka, tvoj jazyk.

In einem Satz

Notizen in der Sprache, in der du präsentierst.

Kernsatz

Drück L: dieselbe Folie, dieselbe Notiz, deine Sprache.

En une ligne

Les notes dans votre langue de présentation.

Phrase clé

Appuyez sur L : même diapo, même note, votre langue.

En una línea

Notas en el idioma en que presentas.

Frase clave

Pulsa L: misma diapositiva, misma nota, tu idioma.

ENSKDEFRES

deckmate.app10

7 / 14

It is HTML

Send one file. It opens in any desktop browser.

File > Export Deckmate HTML Bundle gives you one file. It opens offline, with no app and no account. Import Deckmate Bundle makes it editable again.

It is HTML

A Deckmate deck is HTML.
Send it, and it opens in any browser.

Q3 review.deckmate

Q3 reviewNew Tab

index.html

Two bets for Q3

index.html

Q3 reviewNew Tab

Two bets for Q3

Q3 reviewNew Tab

index.html

Two bets for Q3

File > Export Deckmate HTML Bundle… gives you one file.

It opens offline in any desktop browser: no app, no account.

←→G

Arrow keys move through it; G shows the grid.

Import Deckmate Bundle… makes it editable again.

deckmate.app12

8 / 14

The demo deck

Page through the whole deck, full size

The live slides on this page come from Deckmate’s demo deck. Open the deck itself in a window of its own and see how it presents: 15 slides of HTML and CSS, motion included.

Open the demo deck

→next slideGevery slideFfull screen

Draft the deck
with your AI,
perfect it here,
then present it

Your AI writes the slides as HTML. You mark them up, it revises them, round by round. Then you present from your Mac, or send the deck to anyone with a browser.

deck.htmlYour AI

1<section class="slide" data-id="q3-plan">
2  <div class="kicker">Board meeting</div>
3  <h2>Q3: three bets, no cuts</h2>  <h2>Q3: two bets, one cut</h2>
4  <svg class="chart">…</svg>
5</section>

Board meeting Q3: three bets, no cutsQ3: two bets, one cut Cut one? Done

deckmate.app1

Exports

Everyone else gets a PDF, a handout or a PPTX

Presented PDF

The deck as you present it, hidden slides left out.

Handout PDF

Two slides a page, with your speaker notes below them.

PPTX

For anyone who needs a classic slide file.

Deckmate HTML Bundle

One file that opens in any browser. Import it to edit again.

Moving slides export as their still frame, so a PDF or PPTX shows the finished picture.

Past versions, with optional Git, and recovery copies keep earlier states within reach.

deckmate.app14

Open full size

9 / 14

A real round

One round in the app, start to finish

1

Sketch it on the slide

A rough pen sketch of Newton under a tree, and a short note in Feedback to AI.

2

AI agent takes the round

It reads the round, draws the scene in SVG, animates the apple and writes the slide through Deckmate.

3

Check it, hide the sketch

The change is one Undo away. Hide the sketch, and the apple falls.

RecordedIn Deckmate, 19 Oct 2026, with ChatGPT (gpt-6.1-sol).
The note is retyped for legibility, and the AI’s 86 s are sped up.

deckmate.app5

A live slide of the demo deck, with the recording in it.

10 / 14

Motion

This motion is a few lines
of HTML and CSS

CSS@keyframes mph-swing {
  from    { rotate: var(--lift); }
  50%, to { rotate: 0deg; }
}
.ball {
  animation: mph-swing 1s ease-in infinite alternate;
}
.left  { --lift:  30deg; }
.right { --lift: -30deg; animation-delay: -1s; }

GPT

Drawn and animated by ChatGPT in one feedback round. No video, no plug-in. Try making this in a classic slide app.

deckmate.app13

This is a live slide of the demo deck, not a video.

11 / 14

By hand

A word or a title? Change it yourself

Edit mode with the caret in a slide title

`E` Edit in place

The caret goes on the slide. Deckmate saves as you go, with no Save command.

The slide grid with every slide of the deck

`G` The grid

Drag to reorder, shift-click a range, and hide a slide without deleting it.

Exports

A presented PDF, a handout with your notes, the HTML bundle, and a PPTX: pixel-exact slides, read only, or a beta export with editable text.

Every change is one Undo away, and past versions keep the history.

12 / 14

Questions

Asked, answered.

Why not just ask ChatGPT for slides?

A chat makes a first draft fast. The work is everything after: in a chat you describe where each fix goes; in Deckmate you mark it on the slide, and you stay the author.

Which AI works with Deckmate, and how?

The one you already use. Deckmate keeps each deck as a folder of plain files on your Mac, and your AI works on that folder. The Claude or ChatGPT app on your Mac opens it directly, and so do Claude Code and Codex. Claude or ChatGPT in a browser reach it through Google Drive on your Mac. Any other AI works by copy and paste. Deckmate holds no model, asks for no keys or logins and meters no tokens: each route runs under your own AI account.

Do I need a terminal?

No. The Claude and ChatGPT apps, a browser or copy and paste all work without one. A coding agent is one option, not a requirement.

Is my deck sent anywhere?

Decks live in folders on your Mac, with no account, and we do not see your slides. A deck leaves your Mac only when your AI works on it, under your account and your AI vendor’s terms, or when you keep it in Google Drive for the browser route.

What do people without Deckmate see?

Send the HTML bundle and it opens in any desktop browser. Or export a presented PDF, a handout PDF or a PPTX: pixel-exact slides by default, or a beta export with editable text.

Can I present offline?

Yes. A finished deck needs no connection: present it, fix text, reorder and hide slides.

What if the AI makes a slide worse?

Every AI write is one Undo away. Past versions, with optional Git, and recovery copies keep earlier states within reach.

Do I have to know HTML?

No. You describe the deck, your AI writes it, and you fix words on the slide itself. The HTML stays out of your way until you want it.

What does it cost?

Free to use, with a small Deckmate mark on presented decks and exports. A one-time license removes it; no subscription. Pricing at launch.

Which Macs does it run on?

macOS 13 or later. PDF and PPTX export work without Chrome; with Google Chrome installed you can pick it for the closest match to the browser.

13 / 14

The last slide

Be presenting when it ships.

Native Mac app, coming soon. Free to use; a one-time license removes the mark. No subscription. Until then, page through the demo deck.

Open the demo deck

Long sessions are part of my consulting work: full days, sometimes two in a row. While preparing one such workshop, I built myself a slide tool on the side and ran both days from it. I’m the one presenting, so every slide has to be mine; the question is only how much effort that takes. Deckmate is that tool, rebuilt as a proper Mac app.

Richard Vdovjak · founder and principal advisor, RAIVEN · raiven.eu

Read the story behind Deckmate

14 / 14

`→` `↓` `PgDn`	next slide
`←` `↑` `PgUp`	previous slide
`Home` / `End`	first / last slide
`?`	this panel
`Esc`	close it

Slides you’d stand behind.

AI makes pretty slides in minutes. Slides you’d stand behind take rounds.

An AI drafts a deck in minutes.
Getting it right takes rounds.

Mark it. Your AI revises. You decide.

Your AI gets one round, revises, and you check it off

Three rounds from a first draft to a slide you would present

Three rounds from a first draft
to a slide you would present

Works with the AI you already use.

The room sees slide 12. You fix slide 37.

Slides in English. Notes in the language you speak.

Speaker notes in the language you present in

Send one file. It opens in any desktop browser.

A Deckmate deck is HTML.
Send it, and it opens in any browser.

Page through the whole deck, full size

Draft the deck
with your AI,
perfect it here,
then present it

The room sees the slide. You see everything else.

See the whole deck and drag it into shape

Everyone else gets a PDF, a handout or a PPTX

Start your own deck

One round in the app, start to finish

This motion is a few lines
of HTML and CSS

A word or a title? Change it yourself

`E` Edit in place

`G` The grid

Exports

Asked, answered.

Be presenting when it ships.

Keys, on this page

Keys, in the app

Slides you’d stand behind.

AI makes pretty slides in minutes. Slides you’d stand behind take rounds.

An AI drafts a deck in minutes.Getting it right takes rounds.

Mark it. Your AI revises. You decide.

Your AI gets one round, revises, and you check it off

Three rounds from a first draft to a slide you would present

Three rounds from a first draftto a slide you would present

Works with the AI you already use.

The room sees slide 12. You fix slide 37.

Slides in English. Notes in the language you speak.

Speaker notes in the language you present in

Send one file. It opens in any desktop browser.

A Deckmate deck is HTML.Send it, and it opens in any browser.

Page through the whole deck, full size

One round in the app, start to finish

This motion is a few linesof HTML and CSS

A word or a title? Change it yourself

E Edit in place

G The grid

Exports

Asked, answered.

Be presenting when it ships.

An AI drafts a deck in minutes.
Getting it right takes rounds.

Three rounds from a first draft
to a slide you would present

A Deckmate deck is HTML.
Send it, and it opens in any browser.

This motion is a few lines
of HTML and CSS

`E` Edit in place

`G` The grid