Minecraft server.properties Generator

The Message of the Day players see below your server name in the multiplayer list. Max 59 characters per line, supports section-sign (§) color codes.

Hard cap on concurrent players. More than ~100 requires extra RAM and tuning view-distance and simulation-distance downwards.

Sets world difficulty. Peaceful disables hostile mobs and regenerates health. Hard enables hunger damage to death.

Default gamemode for new players. Existing players keep their last mode unless force-gamemode is true.

When enabled, players who die are banned (vanilla) or spectate-only. Difficulty is forced to hard.

Players can damage each other when true. Keep false for family or build servers.

Authenticates every joining player against Mojang. Disabling allows cracked clients but exposes you to impersonation — never disable on a public server.

When true, only usernames listed in whitelist.json can connect. Manage in-game with /whitelist add <player>.

Kicks players who are no longer on the whitelist the moment it is reloaded. Set alongside white-list=true.

Name of the directory on disk containing the world. Changing this and restarting generates a new world.

Seed used for world generation. Blank generates a random one. Numeric or text — same seed always generates the same world on the same MC version.

Worldgen preset. Amplified is CPU-heavy. Flat is best for mini-games or creative servers.

Chunks rendered around each player. 10 is vanilla default; drop to 6–8 for busy servers to cut RAM and CPU load significantly.

Chunks where entities and blocks tick. Lower values massively reduce TPS lag with many players.

Radius in blocks where non-ops cannot break or place blocks. Set to 0 to disable.

Hard world border radius from the 0,0 spawn. 29999984 is the vanilla hard limit.

Controls whether villages, temples, strongholds, monuments, and other structures generate. Ore generation is unaffected.

When false, Nether portals do nothing and players cannot enter the Nether.

Allows flight in Survival. Must be true when using fly permissions from plugins, else players get kicked.

When true, players are forced back to the default gamemode on every login. Useful on adventure-map or creative servers.

Whether command blocks function. Required for adventure maps and redstone-logic via commands.

Minutes a player can be idle before they are kicked. 0 = never kick for idling.

URL of a resource pack the server sends to joining players. Must be a direct link to a .zip file, max 250 MB.

Lowercase SHA-1 checksum of the resource pack .zip. Enables the client to cache the pack and detect corruption. Strongly recommended when resource-pack is set.

JSON-formatted text component shown to players when prompted to accept the resource pack. Leave blank for the default Mojang prompt.

When true, players who decline or fail to load the resource pack are kicked with a reason message. Combine with a SHA-1 hash for a smooth player experience.

Port clients connect to. Default 25565. Change to run multiple servers on one IP, but update DNS / SRV records accordingly.

IP the server binds to. Blank = all interfaces. Set only if the host has multiple IPs and you want to restrict which one accepts MC connections.

Packets larger than this are compressed. -1 disables compression entirely (fine on LAN), 0 compresses everything (higher CPU), 256 is the vanilla balance.

Max packets per second from a single client before they are kicked. 0 disables the limit. Useful against spam/flood bots.

When false, the server ignores status pings — it will show as offline in the multiplayer list and third-party trackers. Keep true unless you explicitly want to hide.

When true, kicks players whose ISP country does not match their authenticated Mojang country. Blunt anti-alt tool; has false positives.

Enables epoll-based networking on Linux for better performance. Ignored on Windows/macOS. Leave true.

Exposes server state via the GameSpy Query protocol. Required by many server list sites and status tools — enable if you want to appear online on third-party lists.

UDP port the query protocol listens on. Can equal server-port unless you firewall TCP and UDP separately.

Enables remote server console over TCP. Set a strong rcon.password and never expose the RCON port to the public internet.

Port the RCON protocol listens on. Should be firewalled to trusted IPs only.

Authentication password for RCON clients. Leaving this blank disables RCON even if enable-rcon is true.

When true, commands executed through RCON are echoed to in-game ops.

Whether commands run from the server console are shown to in-game ops.

Permission level new ops receive. Levels 1–4, each inheriting the previous. Level 4 is full server control.

Permission level used when executing /function. Set to 4 if your datapacks need full command access.

If a single tick exceeds this many milliseconds, the watchdog stops the server. Set to -1 to disable watchdog (useful when debugging or running heavy modpacks).

Maximum depth of chained block-update reactions (like long redstone circuits). Lower values protect against lag machines and infinite loops; -1 removes the cap (vanilla behavior pre-1.19).

Percentage of the view-distance over which entities are sent to clients. Lowering saves bandwidth on busy servers at the cost of entities popping in.

When true, every chunk write is fsync’d to disk. Setting false on Linux greatly reduces I/O wait but risks chunk corruption on power loss.

Seconds of empty server time before the server pauses tick processing entirely (added in 1.21.2). Massive CPU saving for idle servers. 0 disables.

When false, player IPs are not written to the server log. Useful for privacy-sensitive servers. Authentication still works.

Forces players to have a Mojang-signed public key (since 1.19). Disable only if supporting legacy or modded clients that lack this.

Hides the list of online players from the server list ping. Player count is still shown.