Installing a plugin

Requirements

Plugins only work on a Bukkit-compatible jar: Paper, Purpur, or Spigot. A Vanilla or Forge server can't run plugins (use Forge/Fabric mods instead).

From the panel

1. Open your server's Files tab.
2. Go to the plugins/ folder.
3. Upload the plugin's .jar file (downloaded from SpigotMC, Modrinth, or Hangar).
4. Restart the server from the panel.

Via SFTP

For several plugins at once, an SFTP client (FileZilla, WinSCP) is still faster than uploading one file at a time from the client area — you connect with an SSH key, and the details are under Settings → SFTP access (see connecting over SFTP).

Verifying the install

Check the console at startup: a correctly loaded plugin shows up in the logs with its name and version. If something's wrong, check that the plugin version matches your Minecraft version.