Server Settings
Configure server.properties, Java settings, and the server profile.
The Settings panel for each server gives you control over the Minecraft server configuration and the Java runtime that launches it.
Server Properties
This is a user-friendly editor for server.properties. Changes are written directly to the file.
General settings
| Setting | Description | Default |
|---|---|---|
| MOTD | Message of the Day shown in the server list | A Minecraft Server |
| Level name | The world directory name | world |
| Level seed | World generation seed (blank for random) | (empty) |
| Gamemode | survival, creative, adventure, spectator | survival |
| Difficulty | peaceful, easy, normal, hard | easy |
| Max players | Maximum concurrent players | 20 |
| Server port | Port the server listens on | 25565 |
| View distance | Chunk render distance (in chunks) | 10 |
| Simulation distance | Chunk simulation distance | 10 |
Toggles
| Setting | Description | Default |
|---|---|---|
| Online mode | Require authenticated Minecraft accounts | On |
| Whitelist | Only allow whitelisted players | Off |
| PVP | Allow player vs player combat | On |
| Command blocks | Enable command blocks | Off |
| Allow flight | Allow players to fly | Off |
Raw properties editor
For advanced users, a raw editor is available that shows the full server.properties file as plain text. Any property not exposed in the UI can be edited here.
Note
Most server property changes require a server restart to take effect. Cliff will indicate this when you save.
Java & Profile
The profile section controls how the server is launched.
Java settings
- Java path — Which Java runtime to use. Set to
autoto let Cliff detect the best available version, or specify a path manually. - Minimum memory (MB) — Initial heap size (
-Xms) - Maximum memory (MB) — Maximum heap size (
-Xmx) - Extra JVM arguments — Additional Java flags (e.g. Aikar's G1GC flags)
Memory presets
Cliff provides quick memory presets:
- Light — 1024 / 2048 MB (2 GB)
- Standard — 2048 / 4096 MB (4 GB)
- Modded — 4096 / 6144 MB (6 GB)
- Heavy — 6144 / 8192 MB (8 GB)
Version and loader
- Minecraft version — Change the server's Minecraft version
- Loader version — For modded servers, change the loader version (Fabric, Forge, NeoForge)
Warning
Changing the Minecraft version or loader version on an existing server may break compatibility with installed mods and world data. Create a backup first.
Server icon
You can upload a custom server icon (a 64x64 PNG) that appears in the Minecraft server list. The icon is saved as server-icon.png in the server directory.
Saving changes
- Save properties — Writes changes to
server.properties - Save profile — Updates the server's launch configuration
If you have unsaved changes and try to navigate away, Cliff will prompt you to save or discard.