Mdfried is a markdown viewer for the terminal that renders headers as Bigger
Text than the rest.

Features:

- Big Headers™: headers are actually rendered as images, or with the Text
  Sizing Protocol
- Image previews with multiple graphics protocols
- Pager with basic unix-page and Vi-style keybindings
- Search
- Links: opens URLs with xdg-open or equivalent command.
- Syntax highlighting in codeblocks with arborium
- Mermaid diagram rendering via internal renderer or external mermaid-cli
  command
- Experimental PDF support.
- Theme configuration support