FAQ, and what this is not

Is my file uploaded?Copy Anchor Link

No. Every page on this site runs in your tab or in a Web Worker, and your deck is never sent anywhere. The one thing the site loads from another origin is a page-view counter from analytics.dewiride.com. The one page that shows something not computed in your tab - the command-line demo - shows slides rendered when the site was built, from the sample decks.

Can I edit a deck?Copy Anchor Link

Five gestures today, on the editor and the playground's Edit tab: drag a shape, fill it, colour its text, type in it where it is, delete it. Each is an XML edit on the slide's own part with an exact inverse, so undo restores the file rather than a copy, and the download opens in PowerPoint. Resize, rotate, adding a shape, fonts and a real caret are phases 5 and 6.

What happens to a placeholder I move or colour?Copy Anchor Link

It gets an a:xfrm or an a:solidFill of its own on the slide - in its p:spPr for a fill, in every run's a:rPr for a text colour - which is exactly what PowerPoint writes when you drag or recolour one; the layout keeps every other property, and the inheritance demo shows which. Reset and Change Layout, which take a local override back, are phase 7.

Does it draw charts, tables, SmartArt?Copy Anchor Link

Not yet. They are preserved byte for byte through an export and drawn as frames. Tables and SmartArt are phase 4; charts are phases 9 and 10. Nothing you cannot see is lost.

Can I use it in Node?Copy Anchor Link

Every package but render-dom; cli is Node-only. Text measurement needs a canvas or a measurer you supply, and the CLI supplies one from font tables.

Which browsers?Copy Anchor Link

The test suites run in real Chromium, not jsdom, and the packages need OffscreenCanvas for text measurement. Other evergreen browsers are expected to work and are not tested.

Is it stable?Copy Anchor Link

No. This is pre-alpha: versions are 0.x, ranges are carets, every change ships with a changeset, and the API will change before 1.0. The packages are on npm with provenance a consumer can verify with npm audit signatures.

Why does this site show an older version than npm?Copy Anchor Link

The site is rebuilt from the repository after a release, so for a short while after a release it can sit one release behind. The footer says which versions it was built against.

A deck breaks - what do I send?Copy Anchor Link

The census from the Census demo, downloaded as JSON - it holds no slide text - plus the validator report, and if you can run it, the output of npx @pptx-studio/cli bisect between a deck that works and one that does not.

What this is notCopy Anchor Link

PPTX Studio is not a PowerPoint clone, and it does not try to be. Omitted by design:

• A SmartArt layout engine - SmartArt is drawn from the fallback drawing PowerPoint stores, and preserved.
• Animation authoring - timelines are preserved, never edited.
• Chart data editing - chart parts are preserved; drawing them is phases 9 and 10.
• OLE editing - embedded objects are preserved as frames.
• A server rendering service as a product - the CLI renders on a server, and that is all.
• Real-time collaboration in version 1.
• A .ppt reader - the binary format from before 2007 is out of scope.
• Format-pane parity - the toolbar is capped at seven controls.

Not affiliated with or endorsed by Microsoft. PowerPoint is a trademark of Microsoft Corporation.