Initial commit

2025-11-30 08:30:14 +08:00
commit 1dd5bee3b4
335 changed files with 147360 additions and 0 deletions
--- a/skills/markitdown/references/file_formats.md
+++ b/skills/markitdown/references/file_formats.md
@@ -0,0 +1,542 @@
+# File Format Support
+
+This document provides detailed information about each file format supported by MarkItDown.
+
+## Document Formats
+
+### PDF (.pdf)
+
+**Capabilities**:
+- Text extraction
+- Table detection
+- Metadata extraction
+- OCR for scanned documents (with dependencies)
+
+**Dependencies**:
+```bash
+pip install 'markitdown[pdf]'
+```
+
+**Best For**:
+- Scientific papers
+- Reports
+- Books
+- Forms
+
+**Limitations**:
+- Complex layouts may not preserve perfect formatting
+- Scanned PDFs require OCR setup
+- Some PDF features (annotations, forms) may not convert
+
+**Example**:
+```python
+from markitdown import MarkItDown
+
+md = MarkItDown()
+result = md.convert("research_paper.pdf")
+print(result.text_content)
+```
+
+**Enhanced with Azure Document Intelligence**:
+```python
+md = MarkItDown(docintel_endpoint="https://YOUR-ENDPOINT.cognitiveservices.azure.com/")
+result = md.convert("complex_layout.pdf")
+```
+
+---
+
+### Microsoft Word (.docx)
+
+**Capabilities**:
+- Text extraction
+- Table conversion
+- Heading hierarchy
+- List formatting
+- Basic text formatting (bold, italic)
+
+**Dependencies**:
+```bash
+pip install 'markitdown[docx]'
+```
+
+**Best For**:
+- Research papers
+- Reports
+- Documentation
+- Manuscripts
+
+**Preserved Elements**:
+- Headings (converted to Markdown headers)
+- Tables (converted to Markdown tables)
+- Lists (bulleted and numbered)
+- Basic formatting (bold, italic)
+- Paragraphs
+
+**Example**:
+```python
+result = md.convert("manuscript.docx")
+```
+
+---
+
+### PowerPoint (.pptx)
+
+**Capabilities**:
+- Slide content extraction
+- Speaker notes
+- Table extraction
+- Image descriptions (with AI)
+
+**Dependencies**:
+```bash
+pip install 'markitdown[pptx]'
+```
+
+**Best For**:
+- Presentations
+- Lecture slides
+- Conference talks
+
+**Output Format**:
+```markdown
+# Slide 1: Title
+
+Content from slide 1...
+
+**Notes**: Speaker notes appear here
+
+---
+
+# Slide 2: Next Topic
+
+...
+```
+
+**With AI Image Descriptions**:
+```python
+from openai import OpenAI
+
+client = OpenAI()
+md = MarkItDown(llm_client=client, llm_model="gpt-4o")
+result = md.convert("presentation.pptx")
+```
+
+---
+
+### Excel (.xlsx, .xls)
+
+**Capabilities**:
+- Sheet extraction
+- Table formatting
+- Data preservation
+- Formula values (calculated)
+
+**Dependencies**:
+```bash
+pip install 'markitdown[xlsx]'  # Modern Excel
+pip install 'markitdown[xls]'   # Legacy Excel
+```
+
+**Best For**:
+- Data tables
+- Research data
+- Statistical results
+- Experimental data
+
+**Output Format**:
+```markdown
+# Sheet: Results
+
+| Sample | Control | Treatment | P-value |
+|--------|---------|-----------|---------|
+| 1      | 10.2    | 12.5      | 0.023   |
+| 2      | 9.8     | 11.9      | 0.031   |
+```
+
+**Example**:
+```python
+result = md.convert("experimental_data.xlsx")
+```
+
+---
+
+## Image Formats
+
+### Images (.jpg, .jpeg, .png, .gif, .webp)
+
+**Capabilities**:
+- EXIF metadata extraction
+- OCR text extraction
+- AI-powered image descriptions
+
+**Dependencies**:
+```bash
+pip install 'markitdown[all]'  # Includes image support
+```
+
+**Best For**:
+- Scanned documents
+- Charts and graphs
+- Scientific diagrams
+- Photographs with text
+
+**Output Without AI**:
+```markdown
+![Image](image.jpg)
+
+**EXIF Data**:
+- Camera: Canon EOS 5D
+- Date: 2024-01-15
+- Resolution: 4000x3000
+```
+
+**Output With AI**:
+```python
+from openai import OpenAI
+
+client = OpenAI()
+md = MarkItDown(
+    llm_client=client,
+    llm_model="gpt-4o",
+    llm_prompt="Describe this scientific diagram in detail"
+)
+result = md.convert("graph.png")
+```
+
+**OCR for Text Extraction**:
+Requires Tesseract OCR:
+```bash
+# macOS
+brew install tesseract
+
+# Ubuntu
+sudo apt-get install tesseract-ocr
+```
+
+---
+
+## Audio Formats
+
+### Audio (.wav, .mp3)
+
+**Capabilities**:
+- Metadata extraction
+- Speech-to-text transcription
+- Duration and technical info
+
+**Dependencies**:
+```bash
+pip install 'markitdown[audio-transcription]'
+```
+
+**Best For**:
+- Lecture recordings
+- Interviews
+- Podcasts
+- Meeting recordings
+
+**Output Format**:
+```markdown
+# Audio: interview.mp3
+
+**Metadata**:
+- Duration: 45:32
+- Bitrate: 320kbps
+- Sample Rate: 44100Hz
+
+**Transcription**:
+[Transcribed text appears here...]
+```
+
+**Example**:
+```python
+result = md.convert("lecture.mp3")
+```
+
+---
+
+## Web Formats
+
+### HTML (.html, .htm)
+
+**Capabilities**:
+- Clean HTML to Markdown conversion
+- Link preservation
+- Table conversion
+- List formatting
+
+**Best For**:
+- Web pages
+- Documentation
+- Blog posts
+- Online articles
+
+**Output Format**: Clean Markdown with preserved links and structure
+
+**Example**:
+```python
+result = md.convert("webpage.html")
+```
+
+---
+
+### YouTube URLs
+
+**Capabilities**:
+- Fetch video transcriptions
+- Extract video metadata
+- Caption download
+
+**Dependencies**:
+```bash
+pip install 'markitdown[youtube-transcription]'
+```
+
+**Best For**:
+- Educational videos
+- Lectures
+- Talks
+- Tutorials
+
+**Example**:
+```python
+result = md.convert("https://www.youtube.com/watch?v=VIDEO_ID")
+```
+
+---
+
+## Data Formats
+
+### CSV (.csv)
+
+**Capabilities**:
+- Automatic table conversion
+- Delimiter detection
+- Header preservation
+
+**Output Format**: Markdown tables
+
+**Example**:
+```python
+result = md.convert("data.csv")
+```
+
+**Output**:
+```markdown
+| Column1 | Column2 | Column3 |
+|---------|---------|---------|
+| Value1  | Value2  | Value3  |
+```
+
+---
+
+### JSON (.json)
+
+**Capabilities**:
+- Structured representation
+- Pretty formatting
+- Nested data visualization
+
+**Best For**:
+- API responses
+- Configuration files
+- Data exports
+
+**Example**:
+```python
+result = md.convert("data.json")
+```
+
+---
+
+### XML (.xml)
+
+**Capabilities**:
+- Structure preservation
+- Attribute extraction
+- Formatted output
+
+**Best For**:
+- Configuration files
+- Data interchange
+- Structured documents
+
+**Example**:
+```python
+result = md.convert("config.xml")
+```
+
+---
+
+## Archive Formats
+
+### ZIP (.zip)
+
+**Capabilities**:
+- Iterates through archive contents
+- Converts each file individually
+- Maintains directory structure in output
+
+**Best For**:
+- Document collections
+- Project archives
+- Batch conversions
+
+**Output Format**:
+```markdown
+# Archive: documents.zip
+
+## File: document1.pdf
+[Content from document1.pdf...]
+
+---
+
+## File: document2.docx
+[Content from document2.docx...]
+```
+
+**Example**:
+```python
+result = md.convert("archive.zip")
+```
+
+---
+
+## E-book Formats
+
+### EPUB (.epub)
+
+**Capabilities**:
+- Full text extraction
+- Chapter structure
+- Metadata extraction
+
+**Best For**:
+- E-books
+- Digital publications
+- Long-form content
+
+**Output Format**: Markdown with preserved chapter structure
+
+**Example**:
+```python
+result = md.convert("book.epub")
+```
+
+---
+
+## Other Formats
+
+### Outlook Messages (.msg)
+
+**Capabilities**:
+- Email content extraction
+- Attachment listing
+- Metadata (from, to, subject, date)
+
+**Dependencies**:
+```bash
+pip install 'markitdown[outlook]'
+```
+
+**Best For**:
+- Email archives
+- Communication records
+
+**Example**:
+```python
+result = md.convert("message.msg")
+```
+
+---
+
+## Format-Specific Tips
+
+### PDF Best Practices
+
+1. **Use Azure Document Intelligence for complex layouts**:
+   ```python
+   md = MarkItDown(docintel_endpoint="endpoint_url")
+   ```
+
+2. **For scanned PDFs, ensure OCR is set up**:
+   ```bash
+   brew install tesseract  # macOS
+   ```
+
+3. **Split very large PDFs before conversion** for better performance
+
+### PowerPoint Best Practices
+
+1. **Use AI for visual content**:
+   ```python
+   md = MarkItDown(llm_client=client, llm_model="gpt-4o")
+   ```
+
+2. **Check speaker notes** - they're included in output
+
+3. **Complex animations won't be captured** - static content only
+
+### Excel Best Practices
+
+1. **Large spreadsheets** may take time to convert
+
+2. **Formulas are converted to their calculated values**
+
+3. **Multiple sheets** are all included in output
+
+4. **Charts become text descriptions** (use AI for better descriptions)
+
+### Image Best Practices
+
+1. **Use AI for meaningful descriptions**:
+   ```python
+   md = MarkItDown(
+       llm_client=client,
+       llm_model="gpt-4o",
+       llm_prompt="Describe this scientific figure in detail"
+   )
+   ```
+
+2. **For text-heavy images, ensure OCR dependencies** are installed
+
+3. **High-resolution images** may take longer to process
+
+### Audio Best Practices
+
+1. **Clear audio** produces better transcriptions
+
+2. **Long recordings** may take significant time
+
+3. **Consider splitting long audio files** for faster processing
+
+---
+
+## Unsupported Formats
+
+If you need to convert an unsupported format:
+
+1. **Create a custom converter** (see `api_reference.md`)
+2. **Look for plugins** on GitHub (#markitdown-plugin)
+3. **Pre-convert to supported format** (e.g., convert .rtf to .docx)
+
+---
+
+## Format Detection
+
+MarkItDown automatically detects format from:
+
+1. **File extension** (primary method)
+2. **MIME type** (fallback)
+3. **File signature** (magic bytes, fallback)
+
+**Override detection**:
+```python
+# Force specific format
+result = md.convert("file_without_extension", file_extension=".pdf")
+
+# With streams
+with open("file", "rb") as f:
+    result = md.convert_stream(f, file_extension=".pdf")
+```
+