Quick answer: If you've exported an AI-generated deck to PowerPoint and then opened it, you know the routine. You change one word in a heading and discover the sentence is split across five text boxes. Fonts you didn't install have been substituted. The gradient title is one flat color now. The 16:9 deck that looked clean in the browser has a card with a different height and overlapping body text. The file occasionally asks PowerPoint to repair it on open.

That hour of cleanup is not a rendering bug to be patched. It's structural, and it's baked into how every web-first presentation tool works.

Why the export breaks: two surfaces, two layout systems

Gamma, Canva, and most web-first AI presentation tools design on a web surface — a responsive card built with CSS, where content flows in a flexible container, fonts are loaded from the web, and effects like blur, frosted glass, and gradients are browser features. PowerPoint is a fixed canvas — absolutely positioned shapes on a fixed slide, with a finite subset of visual effects, a different font stack, and different object model.

When the design tool exports, it has to translate between these two systems. The more flexible the web card was, the more decisions the converter must make to cut it into fixed slides. The translator has no way to preserve "this text flows as the card grows," because PowerPoint slides don't grow. So it bakes in guesses — positions, wraps, and effect fallbacks — and those guesses are what you clean up.

Gamma's own help center documents a partial list of the trade-offs: gradient headings may render differently or default to a single color, and while text is usually editable, line breaks and spacing can shift. Independent 2026 guides and Gamma's public feedback board add the rest: custom fonts are substituted when the target machine doesn't have them, interactive cards and embedded elements export as static content, animations don't survive the conversion, and complex layouts can be grouped or flattened. Feedback threads also flag inconsistent font sizes and positions across slides, 16:9 cards with differing heights, and speaker notes lost on import. None of these are secret; they're the visible edge of a format conversion.

What "exports to PowerPoint" actually covers

"Exportable to PowerPoint" is not one feature. It's at least four fundamentally different output types, and the experience of editing is different for each:

  1. A native presentation built from real PowerPoint objects — live text boxes, shapes, lines, and images that you click into and edit. This is the only one that behaves like a deck someone made in PowerPoint.
  2. A converter that maps web elements to PPTX — mostly live text, but with approximations and the documented fallbacks above. This is what most web-first tools produce.
  3. One picture per slide — pixel-accurate, completely uneditable.
  4. An add-in inside PowerPoint — native by definition, but you're designing inside PowerPoint with a template, not on the web.

Canva's help center warns that downloaded presentations can look different in PowerPoint, with fonts substituted if the recipient doesn't have them installed; Canva's own animations and embedded video and audio don't carry over to the PPTX at all. Even a tool built on smart auto-layout, Beautiful.ai, applies its rebalancing only inside its own editor — an exported PPTX is a static file that won't reflow, and reviewers report font rendering, image placement, and layout issues on complex slides.

The honest way to test any tool's export is a five-minute checklist: double-click the title and see if it's one editable text box; change one word and check the wrap; replace the font; zoom to 200% on an image; open the file on a machine without the tool's fonts; and confirm it opens without a repair prompt. Run that before a deadline, not after.

How Neatico builds the PPTX instead of converting

Neatico starts from the other side of the problem. Because the design is generated by a deterministic engine rather than by flowing CSS, the internal representation is already a fixed-canvas layer tree — the same kind of object model PowerPoint uses. The browser canvas is the preview; the export layer serializes the same layers to PPTX, which means there's no responsive-to-fixed conversion.

Here's what the export actually does:

  • Text is written as real PowerPoint text runs with weight, style, underline, color, and alignment — not images, not line-by-line text boxes.
  • Shapes, lines, icons, and images are real objects, independently selectable and editable.
  • Code blocks are syntax-highlighted and written as native runs, using a shared highlighter package (@neatico/code-highlight), so a code slide stays editable and legible.
  • CJK fonts are mapped by language — Japanese, Korean, simplified Chinese, and traditional Chinese each get a correct Office font, so a translated deck doesn't fall back to a Latin font with tofu boxes.
  • Effects the format can't represent aren't hidden. If a layer genuinely needs a raster (a complex shadow, blur, skew, or a non-exportable group), it's rasterized — and the export report lists every single rasterized layer by page and node, so you know exactly what's vector and what's not. No silent flattening.
  • The package is validated before download. We ship a small package (@neatico/pptx-integrity) that inspects the generated OOXML and removes the phantom slide-master declarations that the PPTX generator emits — a known issue that makes PowerPoint flag files as corrupt. The goal is "no repair prompt, ever."

Native objects in, no converter in the middle, and a full audit of the few exceptions. That's the bar a "real" PPTX should meet, and the bar we hold ourselves to.

Free watermarks and paid gates: the other cleanup

There's a second, commercial cleanup layer worth knowing while you compare tools. Free exports from Gamma include Gamma branding on the slides; removing it requires a paid plan (Plus is the first tier to remove it). Some competitors gate editable PPTX export itself behind higher plans or per-export credits. As of late 2026, Gamma's paid plans run $12–$100 per seat per month (about $9–$90 when billed annually), with cards per prompt ranging from 10 on free to 75 on the Ultra tier; the free tier's 400 credits are a one-time signup grant, not a monthly refill.

Neatico's free tier exports without a watermark, and the deck you generate is a genuinely editable file — the native-object export is the same engine on every plan.

Pick the right tool for the destination

This isn't a claim that web-first tools are bad. Gamma is one of the fastest ways to get a polished draft, and if your deliverable is a live web card or a shared link, the card model is genuinely nice. Canva is unmatched for editing breadth and template volume. The question is where the deck lives at the end:

  • If you present live from a link and never open PowerPoint, card-based web tools are fine.
  • If your workflow requires editing in PowerPoint, distributing a .pptx to a client, or passing the deck through a corporate template, the export is the product. Choose the tool that builds native objects, lists what it rasterizes, and opens clean — and run the five-minute checklist above on its free tier.

The presentation isn't done when it looks good in the browser. It's done when someone else can open it, change it, and present it. Generate a deck from your own material and run the export test yourself.

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