The Link indexer plugin for Obsidian automates the creation of index notes that list and count links between notes in your vault based on customizable conditions. Users can configure multiple presets to generate different types of reports, such as used links, nonexistent files, or specific exclusions. The plugin supports options to include embeds, strict line breaks, and filtering links by file names or paths. This tool helps users better understand and manage the connections within their vault, making it ideal for organizing and navigating large collections of notes.