convert-pdf-to-md — скилл для GitHub Copilot

---
name: convert-pdf-to-md
description: 'Converts PDF (.pdf) documents into Markdown so their contents can be accurately analyzed, summarized, searched, or extracted from. Use this skill whenever the user shares, references, or asks about a .pdf file — even if they don''t say "convert" or "markdown" explicitly. This includes requests to "read", "summarize", "review", "extract data from", "compare", or "analyze" a PDF report, paper, invoice, form, contract, or scanned document. Always run the bundled conversion script to produce Markdown first; do not attempt to parse PDF content directly or write ad-hoc extraction code. Also use this skill for batch requests involving a whole folder of PDF documents. IMPORTANT: When the user references a folder or set of documents containing multiple file types (.pdf, .docx, .xlsx), invoke ALL three sibling skills — convert-pdf-to-md, convert-word-to-md, and convert-excel-to-md — so no file type is silently skipped.'
---

# Convert PDF to Markdown

## When to use this skill

Trigger this skill any time there is a `.pdf` file that needs to be
understood or processed — for example, a user attaches a PDF and asks
questions about it, wants a summary, wants specific data or tables pulled
out, or wants multiple PDFs in a folder processed together. PDF is a
layout/print format, not reliably readable as plain text, so always convert
it to Markdown first using the script in this skill rather than trying to
open or parse the file directly.

This skill only supports `.pdf` — that's MarkItDown's only PDF-family
format, so there's no legacy format to worry about here (unlike Word's
`.doc` or Excel's `.xls`).

**Mixed file types:** When the user references a folder or set of documents
containing multiple supported file types (`.pdf`, `.docx`, `.xlsx`), this
skill handles only `.pdf` files. The agent MUST also invoke the sibling
skills in parallel:
- `convert-word-to-md` for any `.docx` files
- `convert-excel-to-md` for any `.xlsx` files

Never process a folder and silently skip a supported file type. All three
skills must be invoked together when mixed types are present.

## Setup (once per environment)

Before the first conversion in a given environment, follow
[`references/setup.md`](references/setup.md) step by step to ensure Python,
pip, `markitdown`, and `pymupdf` (for image extraction) are installed. Do
this proactively rather than guessing whether the environment is ready — the
script itself will also fail with a clear pointer back to that file if a
dependency turns out to be missing, so it's safe to just try the conversion
first if you're reasonably confident setup was already done.

## Usage

The conversion script lives at `scripts/convert_pdf_to_md.py`.

**Output structure:** MarkItDown's PDF converter extracts text and tables
only — it has no concept of embedded images at all. This script separately
extracts real embedded images via PyMuPDF and writes a self-contained folder
per document:

```
<name>/
    img/
        page001_img001.<ext>
        page002_img001.<ext>
        ...
    <name>.md
```

Because MarkItDown's PDF text does not preserve reliable per-page markers,
there's no safe way to know exactly where inline an image belongs. Rather
than risk misplacing images next to the wrong paragraph, the script appends
a `## Extracted Images` section at the end of the Markdown, with a
`### Page N` subheading per page that has images — read this section
separately from the main body text. If the document has no embedded images,
no `img/` folder or `Extracted Images` section is created.

**Single file:**

```powershell
python scripts\convert_pdf_to_md.py "C:\path\to\document.pdf"
```

This creates a `document\` folder next to the source file (containing
`document.md` and, if present, `document\img\`). To control the destination
folder explicitly:

```powershell
python scripts\convert_pdf_to_md.py "C:\path\to\document.pdf" -o "C:\path\to\output_folder"
```

**A folder of PDFs (batch mode):**

```powershell
python scripts\convert_pdf_to_md.py "C:\path\to\folder"
```

Add `--recursive` to also include subfolders:

```powershell
python scripts\convert_pdf_to_md.py "C:\path\to\folder" --recursive
```

Each `.pdf` found gets its own `<name>\` output folder next to it by
default. Pass `-o "C:\path\to\output_parent"` to collect all the generated
`<name>\` folders under a separate parent directory instead (subfolder
structure is preserved when combined with `--recursive`).

After conversion, read the resulting `.md` file(s) to perform the actual
analysis the user asked for — the script's job is only to produce accurate
Markdown (and images), not to interpret the content.

## Deciding where output goes

**Default — always output next to the source file.** The `<name>/` folder
is created in the same directory as the source `.pdf`. This is the required
default for every case. Do NOT override it unless the user explicitly asks
for a different location.

**Only use `-o` when** the user explicitly provides an output path (e.g.,
"save the output to `C:\output`", "put the results in `D:\work`"). Do NOT
pass `-o` based on the agent's current working directory, the session state
folder, or any implied location.

**If the source file path cannot be fully resolved** — for example, the
user provides only a filename with no directory, or the path is ambiguous —
use `ask_user` to confirm the full absolute path before running the
conversion. Never guess or assume the directory.

## Troubleshooting

| Symptom | Likely cause | Fix |
|---|---|---|
| `ModuleNotFoundError: No module named 'markitdown'` or `'fitz'` / exit code 2 | MarkItDown or PyMuPDF not installed | Follow `references/setup.md` |
| `ERROR: Unsupported file type '...'` / exit code 3 | Not a `.pdf` file | Ask the user for the correct file, or if it's `.doc`/`.docx`/`.xlsx`, use the matching sibling skill instead |
| `ERROR: Input path not found` / exit code 3 | Wrong path, or file moved | Confirm the correct path with the user |
| `FAILED <file> -> ...` in batch output | That specific file is corrupt, password-protected, or otherwise unreadable | Report which file(s) failed; other files in the batch still succeed |
| `NOTE: skipped N non-.pdf file(s)` | Folder contains non-PDF files | Expected — those files are intentionally ignored |
| Markdown body is empty or near-empty despite images being extracted | The PDF is scanned/image-only with no embedded text layer; MarkItDown does not perform OCR | Tell the user OCR isn't supported — the extracted page images are still available for them to view |
| Images appear in an appendix instead of inline with the text | Deliberate limitation — MarkItDown's PDF text has no reliable per-page markers to place images inline | Expected behavior; cross-reference the `### Page N` heading with the surrounding text context if needed |