Tools
Tools
Each tool answers exactly one question and shows where the answer came from. They read the same database as every other page, so an answer here can never drift from an answer there.
Upgrade check
Can my server move to the new version yet?
Paste your plugins folder and pick the version you want to move to. One holdout blocks the whole upgrade, so this names the ones that are not ready instead of making you open twenty tabs.
Start command generator
How do I start my server correctly?
Pick your software, Minecraft version and memory to get the Java version it needs, Aikar's flags tuned to your heap, a start script and a Docker Compose file.
World version identifier
Which Minecraft version made this world?
Paste the DataVersion out of your level.dat and get the version that saved it, plus every version that can still open it. Minecraft never opens a world from the future, so the number decides what you can restore.
Jar identifier
Which server jar is this?
Paste a SHA-256 and find out exactly which software, Minecraft version and build a jar is, or confirm a download is the file the publisher released. Nothing is uploaded.
Java version checker
Which Java version does my Minecraft version need?
Pick a Minecraft version and get the runtime it requires, which newer runtimes exist, and which server software publishes builds for it.
Modpack picker
Which modpack should I play, and what does it need?
Pick how heavy a pack you want and what you want to do in it. Each one shows the Java version it needs, from Mojang, and a memory estimate derived from the weight its author gave it.
Shader picker
Which shader pack can my PC actually run?
Every pack carries a performance tier its own author set. Pick what your card can handle and the look you want, and get the packs that match rather than a top ten somebody wrote once.
Connection checker
Can my client join that server?
Minecraft compares protocol numbers, not version names, and two versions with different names sometimes share one. Pick both sides and get a straight answer.
Server status and player count
Is that server up, and who is on it?
Live player count, version and MOTD for any Java or Bedrock server, plus which Minecraft versions can actually connect to it.
MOTD generator
How do I make a coloured server MOTD?
Write your server's message of the day, colour it, and see it rendered exactly as the server list will. Copy the codes for server.properties or a plugin.
RAM calculator
How much RAM does my server need?
Estimate the memory a server needs from its type, players and mods, with an -Xmx figure and the reason more is often worse.
Crash log reader
What crashed, and which mod did it?
Paste a crash report or a chunk of latest.log and get the exception that actually caused it, pulled out from under the ones wrapped around it, plus a guess at which mod threw it. Nothing is uploaded.
Color and formatting codes
What are the Minecraft color codes?
Every color and formatting code with its exact hex value, for MOTDs, signs, team names and chat. The section-sign reference server owners keep open in a tab.
Compatibility matrix
What runs on which Minecraft version?
Server software and mod loaders across recent releases, with the evidence shown for every claim.
Build browser
Which build should I download?
Every tracked build with its checksum and a link to the project's own host. Nothing is mirrored here.
Is this information wrong or missing something? .