Markdown → PDF/PNG/JPEG Export (Puppeteer Method)

Architecture Overview

The conversion pipeline mirrors Markdown Preview Enhanced's chromeExport():

Markdown (.md)
    │
    ▼  [markdown-it + plugins]
Standalone HTML (with embedded CSS, math, diagrams)
    │
    ▼  [Puppeteer launches headless Chrome]
Chrome loads the HTML via file:// protocol
    │
    ├──▶ page.pdf()        → PDF output
    ├──▶ page.screenshot() → PNG output
    └──▶ page.screenshot() → JPEG output