The Unique Attachments plugin enhances file management in Obsidian by renaming attachments to ensure unique names using an MD5 hash. This ensures that files with identical content share the same name, providing consistency and eliminating duplicates. The plugin updates references in notes automatically after renaming and includes options to rename only linked attachments or those in the active file. Additionally, it can delete duplicate files within the same folder, helping to maintain a clean vault. Compatibility with standard Markdown links is supported, and integration with other plugins like 'Consistent attachments and links' can further streamline attachment handling. This tool is ideal for users who prioritize organization and efficiency in managing their Obsidian vaults.