Add productivity/document-tools

skills/productivity/document-tools/SKILL.md

@@ -0,0 +1,76 @@
+---
+name: document-tools
+description: "Document processing: PDF editing (nano-pdf) and text extraction from PDFs/scans (pymupdf, marker-pdf)."
+version: 1.0.0
+author: Hermes Agent
+license: MIT
+metadata:
+  hermes:
+    tags: [pdf, document, ocr, text-extraction, nano-pdf, pymupdf, marker]
+    related_skills: [powerpoint, google-workspace]
+---
+
+# Document Tools
+
+Two document processing workflows: in-place PDF editing and text extraction from PDFs/scans.
+
+## Section 1: nano-pdf — In-Place PDF Editing
+
+Edit PDF text, fix typos, and update titles using the `nano-pdf` CLI with natural language prompts.
+
+**When to use:** Fixing typos in PDFs, updating document titles, changing specific text in PDFs without regenerating.
+
+**Installation:**
+```bash
+npm install -g nano-pdf
+```
+
+**Usage:**
+```bash
+# Fix a typo
+nano-pdf document.pdf "change 'teh' to 'the'"
+
+# Update title
+nano-pdf document.pdf "set title to 'Annual Report 2025'"
+```
+
+**See:** `references/nano-pdf.md` for full CLI reference.
+
+## Section 2: OCR & Document Text Extraction
+
+Extract text from PDFs and scanned documents using pymupdf (fast native extraction) or marker-pdf (OCR + layout analysis).
+
+**When to use:** Reading PDF content, extracting text from scans, converting PDFs to plain text or markdown.
+
+### pymupdf (Fast, Native PDF)
+
+```python
+import pymupdf  # fitz
+doc = pymupdf.open("document.pdf")
+for page in doc:
+    text = page.get_text()
+    print(text)
+```
+
+**Best for:** Text-based PDFs, fast extraction, page-level access, image/MRI extraction.
+
+### marker-pdf (OCR + Layout)
+
+```bash
+pip install marker-pdf
+marker_single document.pdf output_dir
+```
+
+**Best for:** Scanned documents, OCR-needed PDFs, preserving layout, converting to markdown.
+
+### Choosing
+
+| Need | Tool |
+|------|------|
+| Fast text extraction from text PDF | pymupdf |
+| Scanned/image PDFs | marker-pdf |
+| Need markdown output | marker-pdf |
+| Extract images from PDF | pymupdf |
+| Preserve document layout | marker-pdf |
+
+**See:** `references/ocr-and-documents.md` for full API reference and troubleshooting.