Language
- Lite (free)
- TypeScript
- Pro
- Same
- python-pptx 1.0.2
- Python

Compare
python-pptx has had limited maintenance activity. PaperJSX gives you a layout engine, richer charting, and animations — in a stack that is still shipping updates.
[01] Side by side
This table keeps the focus on the real migration reasons instead of pretending the language switch is free.
| Capability | Lite (free) | Pro | python-pptx 1.0.2 |
|---|---|---|---|
| Language | TypeScript | Same | Python |
| Layout | Yoga WASM flexbox | Same | Manual Inches(x, y) |
| Chart types | 6 with embedded Excel | 15+ (ChartEx) | ~6 with embedded Excel |
| ChartEx | — | ✓ Yes | Not supported |
| Animations | — | Entrance, exit, morph | Slide transitions only |
| Typography | Basic metrics | HarfBuzz WASM | OOXML direction attributes |
| Maintenance | Active | Same | Limited activity |
[02] Cross-language context
This is a cross-language comparison. If your decks are simple and your Python code is stable, you may not need the migration yet. But once layout reflow, richer presentation features, or active maintenance become requirements, the switch pays for itself quickly.
[03] The real tradeoff
Both can generate real PowerPoint files. The sharper question is whether you want to keep slide assembly in Python application code or move generation behind a more structured layout-aware engine.
JavaScript route
Best when a recurring deck has outgrown imperative slide code and needs to survive content changes without turning into coordinate maintenance.
Python route
If your team lives in Python and the current slide code is simple enough to own directly, you may not need the migration yet.
Paste your slide content into the playground, download the PPTX, and open it in PowerPoint. The layout difference speaks for itself.