Converts Markdown and HTML (GitHub flavor) into NexusMods and Steam BBCode flavor. Might be opionated with the HTML conversion, since there are a few ways to interpret HTML

dotnet tool install -g Converter.MarkdownToBBCodeNM.Tool
dotnet tool install -g Converter.MarkdownToBBCodeSteam.Tool

When installed as a global tool:

# NexusMods
markdown_to_bbcodenm -i "**raw markdown**"
markdown_to_bbcodenm -i "~~raw\r\nmarkdown~~" --disableextended

markdown_to_bbcodenm -i "/markdown.md";
markdown_to_bbcodenm -i "/markdown.md" -o "/bbcode.txt";

# Steam
markdown_to_bbcodesteam -i "**raw markdown**"
markdown_to_bbcodesteam -i "~~raw\r\nmarkdown~~" --disableextended

markdown_to_bbcodesteam -i "/markdown.md";
markdown_to_bbcodesteam -i "/markdown.md" -o "/bbcode.txt";

-i or --input accepts both raw markdown and a file path.
-o or --output accepts a file path. If specified, will write the converted BBCode to the file instead of outputting to the console.
-d or --disableextended will disable newline detection via two spaces and will disable HTML conversion

At the time of writing the tool, it was used to keep in sync the description of the BLSE mod for Bannerlord.
BLSE - GitHub -> NexusMods
MCM - GitHub -> NexusMods & GitHub -> Steam

• You can ignore an HTML element by adding converter_ignore, converter_nexusmods, converter_steam attribute to the element

  <p converter_ignore>WILL NOT BE CONVERTED TO BBCODE</p>
  <p converter_nexusmods>WILL NOT BE CONVERTED TO BBCODE FOR STEAM</p>
  <p converter_steam>WILL NOT BE CONVERTED TO BBCODE FOR NEXUSMODS</p>

• You can set an alternative href for a link for NexusMods/Steam by adding a nexusmods_href or steam_href attribute to the element

  <a href="MARKDOWN_LINK" nexusmods_href="NEXUSMODS_LINK" /> </a>

• You can set an alternative src for an image for NexusMods/Steam by adding a nexusmods_src or steam_src attribute to the element

  <img src="MARKDOWN_IMAGE" nexusmods_src="NEXUSMODS_IMAGE" />

GitHub Markdown Supported HTML Codes
Steam Supported BBCode Codes