pptx

# PPTX Skill ## Runtime Dependencies - Requires LibreOffice (`soffice`) for presentation-to-PDF conversion. - Requires Poppler (`pdftoppm`) for PDF-to-image conversion used by thumbnail/visual workflows. - If `pdftoppm` is unavailable, a Python fallback path may use `pdf2image`. - On Windows, dependencies must be installed and available in `PATH`; if missing, report the dependency issue and stop (do not keep retrying). ## Quick Reference | Task | Guide | |------|-------| | Read/analyze content | `python -m markitdown presentation.pptx` | | Edit or create from template | Read [editing.md](editing.md) | | Create from scratch | Read [pptxgenjs.md](pptxgenjs.md) | --- ## Reading Content ```bash # Text extraction python -m markitdown presentation.pptx # Visual overview python scripts/thumbnail.py presentation.pptx # Raw XML python scripts/office/unpack.py presentation.pptx unpacked/ ``` --- ## Editing Workflow **Read [editing.md](editing.md) for full details.** 1. Analyze template with `thumbnail.py` 2. Unpack → manipulate slides → edit content → clean → pack --- ## Creating from Scratch **Read [pptxgenjs.md](pptxgenjs.md) for full details.** Use when no template or reference presentation is available. --- ## Design Ideas **Don't create boring slides.** Plain bullets on a white background won't impress anyone. Consider ideas from this list for each slide. ### Before Starting - **Pick a bold, content-informed color palette**: The palette should feel designed for THIS topic. If swapping your colors into a completely different presentation would still "work," you haven't made specific enough choices. - **Dominance over equality**: One color should dominate (60-70% visual weight), with 1-2 supporting tones and one sharp accent. Never give all colors equal weight. - **Dark/light contrast**: Dark backgrounds for title + conclusion slides, light for content ("sandwich" structure). Or commit to dark throughout for a premium feel. - **Commit to a visual motif**: Pick ONE distinctive element and repeat it — rounded image frames, icons in colored circles, thick single-side borders. Carry it across every slide. ### Color Palettes Choose colors that match your topic — don't default to generic blue. Use these palettes as inspiration: | Theme | Primary | Secondary | Accent | |-------|---------|-----------|--------| | **Midnight Executive** | `1E2761` (navy) | `CADCFC` (ice blue) | `FFFFFF` (white) | | **Forest & Moss** | `2C5F2D` (forest) | `97BC62` (moss) | `F5F5F5` (cream) | | **Coral Energy** | `F96167` (coral) | `F9E795` (gold) | `2F3C7E` (navy) | | **Warm Terracotta** | `B85042` (terracotta) | `E7E8D1` (sand) | `A7BEAE` (sage) | | **Ocean Gradient** | `065A82` (deep blue) | `1C7293` (teal) | `21295C` (midnight) | | **Charcoal Minimal** | `36454F` (charcoal) | `F2F2F2` (off-white) | `212121` (black) | | **Teal Trust** | `028090` (teal) | `00A896` (seafoam) | `02C39A` (mint) | | **Berry & Cream** | `6D2E46` (berry) | `A26769` (dusty rose) | `ECE2D0` (cream) | | **Sage Calm** | `84B59F` (sage) | `69A297` (eucalyptus) | `50808E` (slate) | | **Cherry Bold** | `990011` (cherry) | `FCF6F5` (off-white) | `2F3C7E` (navy) | ### For Each Slide **Every slide needs a visual element** — image, chart, icon, or shape. Text-only slides are forgettable. **Layout options:** - Two-column (text left, illustration on right) - Icon + text rows (icon in colored circle, bold header, description below) - 2x2 or 2x3 grid (image on one side, grid of content blocks on other) - Half-bleed image (full left or right side) with content overlay **Data display:** - Large stat callouts (big numbers 60-72pt with small labels below) - Comparison columns (before/after, pros/cons, side-by-side options) - Timeline or process flow (numbered steps, arrows) **Visual polish:** - Icons in small colored circles next to section headers - Italic accent text for key stats or taglines ### Typography **Choose an interesting font pairing** — don't default to Arial. Pick a header font with personality and pair it with a clean body font. | Header Font | Body Font | |-------------|-----------| | Georgia | Calibri | | Arial Black | Arial | | Calibri | Calibri Light | | Cambria | Calibri | | Trebuchet MS | Calibri | | Impact | Arial | | Palatino | Garamond | | Consolas | Calibri | | Element | Size | |---------|------| | Slide title | 36-44pt bold | | Section header | 20-24pt bold | | Body text | 14-16pt | | Captions | 10-12pt muted | ### Spacing - 0.5" minimum margins - 0.3-0.5" between content blocks - Leave breathing room—don't fill every inch ### Avoid (Common Mistakes) - **Don't repeat the same layout** — vary columns, cards, and callouts across slides - **Don't center body text** — left-align paragraphs and lists; center only titles - **Don't skimp on size contrast** — titles need 36pt+ to stand out from 14-16pt body - **Don't default to blue** — pick colors that reflect the specific topic - **Don't mix spacing randomly** — choose 0.3" or 0.5" gaps and use consistently - **Don't style one slide and leave the rest plain** — commit fully or keep it simple throughout - **Don't create text-only slides** — add images, icons, charts, or visual elements; avoid plain title + bullets - **Don't forget text box padding** — when aligning lines or shapes with text edges, set `margin: 0` on the text box or offset the shape to account for padding - **Don't use low-contrast elements** — icons AND text need strong contrast against the background; avoid light text on light backgrounds or dark text on dark backgrounds - **NEVER use accent lines under titles** — these are a hallmark of AI-generated slides; use whitespace or background color instead --- ## QA (Required) **Assume there are problems. Your job is to find them.** Your first render is almost never correct. Approach QA as a bug hunt, not a confirmation step. If you found zero issues on first inspection, you weren't looking hard enough. ### Content QA ```bash python -m markitdown output.pptx ``` Check for missing content, typos, wrong order. **When using templates, check for leftover placeholder text:** ```bash python -m markitdown output.pptx | grep -iE "xxxx|lorem|ipsum|this.*(page|slide).*layout" ``` If grep returns results, fix them before declaring success. ### Visual QA **⚠️ USE SUBAGENTS** — even for 2-3 slides. You've been staring at the code and will see what you expect, not what's there. Subagents have fresh eyes. Convert slides to images (see [Converting to Images](#converting-to-images)), then use this prompt: ``` Visually inspect these slides. Assume there are issues — find them. Look for: - Overlapping elements (text through shapes, lines through words, stacked elements) - Text overflow or cut off at edges/box boundaries - Decorative lines positioned for single-line text but title wrapped to two lines - Source citations or footers colliding with content above - Elements too close (< 0.3" gaps) or cards/sections nearly touching - Uneven gaps (large empty area in one place, cramped in another) - Insufficient margin from slide edges (< 0.5") - Columns or similar elements not aligned consistently - Low-contrast text (e.g., light gray text on cream-colored background) - Low-contrast icons (e.g., dark icons on dark backgrounds without a contrasting circle) - Text boxes too narrow causing excessive wrapping - Leftover placeholder content For each slide, list issues or areas of concern, even if minor. Read and analyze these images: 1. /path/to/slide-01.jpg (Expected: [brief description]) 2. /path/to/slide-02.jpg (Expected: [brief description]) Report ALL issues found, including minor ones. ``` ### Verification Loop 1. Generate slides → Convert to images → Inspect 2. **List issues found** (if none found, look again more critically) 3. Fix issues 4. **Re-verify affected slides** — one fix often creates another problem 5. Repeat until a full pass reveals no new issues **Do not declare success until you've completed at least one fix-and-verify cycle.** --- ## Converting to Images Convert presentations to individual slide images for visual inspection: ```bash python scripts/office/soffice.py --headless --convert-to pdf output.pptx pdftoppm -jpeg -r 150 output.pdf slide ``` This creates `slide-01.jpg`, `slide-02.jpg`, etc. To re-render specific slides after fixes: ```bash pdftoppm -jpeg -r 150 -f N -l N output.pdf slide-fixed ``` --- ## Dependencies - `pip install "markitdown[pptx]"` - text extraction - `pip install Pillow` - thumbnail grids - `npm install -g pptxgenjs` - creating from scratch - LibreOffice (`soffice`) - PDF conversion (auto-configured for sandboxed environments via `scripts/office/soffice.py`) - Poppler (`pdftoppm`) - PDF to images --- ## 🎯 实用示例 ### 示例1：基本处理流程 ```bash # 1. 提取文本内容 python -m markitdown presentation.pptx --output presentation.md # 2. 生成缩略图预览 python scripts/thumbnail.py presentation.pptx --output thumbnails/ # 3. 转换为PDF python scripts/office/soffice.py --headless --convert-to pdf presentation.pptx # 4. 生成图像用于检查 pdftoppm -jpeg -r 150 presentation.pdf slide ``` ### 示例2：创建新演示文稿 ```bash # 从模板创建 # 1. 分析模板结构 python scripts/thumbnail.py template.pptx # 2. 编辑内容 # 编辑markdown文件，然后使用pptxgenjs生成 # 3. 使用pptxgenjs创建 pptxgenjs create --title "新产品发布" --slides 10 --output new_presentation.pptx ``` ### 示例3：批量处理 ```bash # 批量转换所有PPT为PDF for ppt in *.pptx; do python scripts/office/soffice.py --headless --convert-to pdf "$ppt" done # 批量提取文本 find . -name "*.pptx" -exec python -m markitdown {} --output {}.md \; ``` ### 示例4：质量检查流程 ```bash #!/bin/bash # QA检查脚本 PPT_FILE="$1" echo "=== PPT质量检查: $PPT_FILE ===" # 1. 检查内容 echo "1. 检查内容完整性..." python -m markitdown "$PPT_FILE" | grep -iE "xxxx|lorem|ipsum|placeholder" && echo "发现占位符内容！" # 2. 生成缩略图 echo "2. 生成缩略图..." python scripts/thumbnail.py "$PPT_FILE" --output /tmp/thumbnails/ # 3. 转换为PDF echo "3. 转换为PDF..." python scripts/office/soffice.py --headless --convert-to pdf "$PPT_FILE" # 4. 生成幻灯片图像 PPT_PDF="${PPT_FILE%.pptx}.pdf" echo "4. 生成幻灯片图像..." pdftoppm -jpeg -r 150 "$PPT_PDF" /tmp/slides/slide echo "检查完成！请查看/tmp/slides/中的图像进行视觉检查" ``` ### 示例5：自动化工作流 ```bash #!/bin/bash # 自动化PPT处理工作流 INPUT_DIR="./raw_ppts" OUTPUT_DIR="./processed" REPORT_DIR="./reports" mkdir -p "$OUTPUT_DIR" "$REPORT_DIR" for ppt in "$INPUT_DIR"/*.pptx; do BASENAME=$(basename "$ppt" .pptx) echo "处理: $BASENAME" # 提取文本 python -m markitdown "$ppt" --output "$OUTPUT_DIR/${BASENAME}.md" # 生成缩略图 python scripts/thumbnail.py "$ppt" --output "$OUTPUT_DIR/thumbnails/${BASENAME}/" # 转换为PDF python scripts/office/soffice.py --headless --convert-to pdf "$ppt" --output "$OUTPUT_DIR/${BASENAME}.pdf" # 生成报告 echo "=== $BASENAME ===" >> "$REPORT_DIR/summary.txt" python -m markitdown "$ppt" --stats >> "$REPORT_DIR/summary.txt" echo "" >> "$REPORT_DIR/summary.txt" done echo "所有文件处理完成！" ``` ## 📚 学习资源 ### 命令参考 ```bash # markitdown文本提取 python -m markitdown --help # 缩略图生成 python scripts/thumbnail.py --help # LibreOffice转换 python scripts/office/soffice.py --help ``` ### 相关技能 - **docx**: Word文档处理 - **xlsx**: Excel表格处理 - **pdf**: PDF文件处理 - **markdownify-mcp**: 内容转换工具 ### 最佳实践 1. **保持备份**: 处理前备份原始文件 2. **分步处理**: 复杂操作分步进行 3. **视觉检查**: 务必生成图像进行视觉检查 4. **版本控制**: 重要修改使用git管理 5. **模板复用**: 创建和维护高质量的模板 ### 故障排除 ```bash # 检查依赖 python scripts/office/soffice.py --check-deps # 调试模式 python -m markitdown --verbose presentation.pptx # 清理缓存 rm -rf /tmp/soffice_* ``` --- **提示**: 对于复杂的PPT编辑任务，建议使用专业的PPT编辑软件（如Microsoft PowerPoint或Google Slides）进行主要编辑，然后使用本工具进行批量处理和自动化任务。