The Image Captions plugin allows users to add captions directly below images in their Obsidian notes using an intuitive syntax. Captions can include Markdown elements, such as bold text, links, and even filenames as captions. Users can also resize images by specifying width dimensions in the syntax. The plugin supports customization through regular expressions to filter out unnecessary elements in captions, making it compatible with other themes or plugins. CSS classes are available for further styling of captions. While captions for external images won't appear in editing mode, this plugin simplifies creating well-structured, captioned visual content in Obsidian notes.