The HackMD Sync plugin for Obsidian facilitates seamless integration between your local notes and HackMD. It allows you to easily push your notes to HackMD, where they are created (if they don't already exist) and updated based on your local changes. The plugin ensures that if there are conflicting edits on the remote note, it will alert you rather than risk overwriting your work. You can also pull changes from HackMD back into your Obsidian notes, ensuring you always have the latest content. Additional features include options to force push or pull, copy the remote URL, and delete the remote note entirely. This plugin streamlines your workflow for users who frequently switch between Obsidian and HackMD, allowing for smoother collaboration and version management.