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Generate, edit, and read PowerPoint presentations. Create from scratch with PptxGenJS (cover, TOC, content, section divider, summary slides), edit existing PPTX via XML workflows, or extract text with markitdown. Triggers: PPT, PPTX, PowerPoint, presentation, slide, deck, slides.
Passed 18 of 21 test cases with the skill, and 9 of 21 without it.
and 7 more in the full report
10 fixed9 passed either way3 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.
What command line tool and syntax should be used to extract structured text content from an existing `quarterly_report.pptx` file into readable markdown for analysis?
| Checked | Without skill | With skill |
|---|---|---|
| Specifies running python -m markitdown quarterly_report.pptx. | Missed | Passed |
The instructions your model reads when the skill loads.
This skill handles all PowerPoint tasks: reading/analyzing existing presentations, editing template-based decks via XML manipulation, and creating presentations from scratch using PptxGenJS. It includes a complete design system (color palettes, fonts, style recipes) and detailed guidance for every slide type.
| Task | Approach |
|---|---|
| Read/analyze content | python -m markitdown presentation.pptx |
| Edit or create from template | See Editing Presentations |
| Create from scratch | See Creating from Scratch below |
| Item | Value |
|---|---|
| Dimensions | 10" x 5.625" (LAYOUT_16x9) |
| Colors | 6-char hex without # (e.g., "FF0000") |
| English font | Arial (default), or approved alternatives |
| Chinese font | Microsoft YaHei |
| Page badge position | x: 9.3", y: 5.1" |
| Theme keys | primary, secondary, accent, light, bg |
| Shapes | RECTANGLE, OVAL, LINE, ROUNDED_RECTANGLE |
| Charts | BAR, LINE, PIE, DOUGHNUT, SCATTER, BUBBLE, RADAR |
| File | Contents |
|---|---|
| slide-types.md | 5 slide page types (Cover, TOC, Section Divider, Content, Summary) + additional layout patterns |
| design-system.md | Color palettes, font reference, style recipes (Sharp/Soft/Rounded/Pill), typography & spacing |
| editing.md | Template-based editing workflow, XML manipulation, formatting rules, common pitfalls |
| pitfalls.md | QA process, common mistakes, critical PptxGenJS pitfalls |
| pptxgenjs.md | Complete PptxGenJS API reference |
test cases passed, vs 9 / 21 without
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