Markdown
Markdown is a lightweight markup language that uses plain text formatting syntax to create structured documents, such as headings, lists, links, and code blocks, which can be easily converted to HTML or other formats. It is designed to be readable and writable by humans without requiring complex tags, making it popular for documentation, README files, and web content. Markdown files typically have extensions like .md or .markdown and are processed by parsers to render formatted output.
Developers should learn Markdown because it is essential for creating clear, maintainable documentation in projects, especially on platforms like GitHub, GitLab, and documentation sites like Read the Docs. It is widely used for writing README files, technical blogs, and collaborative notes due to its simplicity and compatibility with version control systems. Markdown reduces the overhead of formatting compared to HTML, allowing developers to focus on content while ensuring consistency across documentation.