Free · Open source · Bring your own key

Your next deck is one prompt away.

Manatki is an open-source studio where an agent turns a memo, a doc, or a sentence into an on-brand deck or a full campaign — editable to the last text box, exportable to PowerPoint and Google Slides.

The Manatki editor with the agent chat rail open beside a slide

Everything the editor can do, chat can do too

make a 12-slide deck from this memo, on our brand
add a slide about pricing after the roadmap
make a campaign set for the spring launch
attach these screenshots to slide 3
export this deck to Google Slides

One prompt, two kinds of output

A presentation deck open in the Manatki editor

Decks

kind: "deck"

A presentation: one uniform canvas from first slide to last.

Talks, pitches, reports, one-pagers
Presenter flow with a two-pane stage
Google Slides, editable PPTX, PDF, and HTML export

A social project with assets at several canvas sizes, from square post to vertical story

Social assets

kind: "social"

A set of marketing assets, each on its own pixel canvas at its own size.

16 size presets: posts, stories, banners, ads, thumbnails
Composed per format with story safe areas — not one design stretched to many sizes
PNG per asset, or the whole set as a ZIP

On brand, provably

Point Manatki at a website, brand document, or code file and it becomes a reusable design system — then everything generates on brand by default.

A brand check that is a linter, not a vibe check: Deterministic rules flag off-palette colors and off-brand fonts per slide, with occurrence counts and the nearest on-brand token suggested for each.
Fix with AI: Confirmed findings hand off to the agent in one click. It restyles the offending slides — no regenerating the whole deck.
Workspace defaults: Set a default design system once, and a bare “make a deck about X” is already on brand.

Presenting

The presenter stage is keyboard-first — you should never need to reach for the mouse mid-talk.

The two-pane presenter stage: current slide sharp on the left, treated next-slide preview on the right

Two-pane stage: The current slide stays sharp on the left while the next one sits treated on the right, in one of five preview styles you cycle mid-talk.
Screenshot grids: Attach supporting screenshots to any slide. They take over the preview pane as a sharp grid, with click-to-magnify and arrow-key walkthrough.

Presenter keyboard shortcuts
`→←Space`	Next / previous slide
`V`	Cycle preview style
`F`	Fullscreen
`T`	Presenter timer

What's inside

Agentic editing: The chat agent has the same access to your project that you do: create, edit, reorder, theme, and illustrate slides from plain language. Nothing is editor-only.
A real editor: Rich text with slash menus, freeform objects, Excalidraw and Mermaid diagrams, a drawing overlay, speaker notes, undo history, and autosave.
Imports: Bring in PDF, PPTX, DOCX, Google Docs, code files, or just a URL — Manatki turns them into editable slides, not embedded pictures.
Exports: Google Slides straight into your Drive, native editable PPTX, PDF, HTML, and PNG. Text and shapes stay real, not flattened screenshots.
Image decks: Drop in a folder of images and it becomes a deck. A subfolder named after a slide becomes that slide's screenshot set.
Decks on your real numbers: Connect a sibling analytics agent and decks can cite live CRM and product-usage data, with the source and date window kept as evidence.

Free, and yours

Manatki is free. There is no billing code in the repository — no plans page, no seat counter, no card on file.

Your key: You add your own OpenAI key in Settings. It is stored encrypted, scoped to your account, and used only for your own slide and image generation — generation runs at your provider's prices, and the hosted app holds no server-side AI keys.
Your data: Decks live in your own database and files in your own blob storage when you self-host: Neon Postgres or any SQL that Drizzle speaks, Vercel Blob swappable for S3 or R2, Better Auth with GitHub OAuth.

MIT-licensed and self-hostable. Locally it runs on SQLite with auth switched off, so you can be editing a deck a minute after cloning — it serves at localhost:8080.

$ pnpm install$ pnpm dev

Free, no card, ever.