Chronos Backups
Chronos Backups
Keep Minecraft worlds safe without filling your disk. Smart chunk pruning, the broadest loader range of any backup mod, and optional Google Drive sync.
Privacy Policy for Google Drive authorization
Chronos Backups is a multi-loader, multi-version Minecraft backup utility that keeps your world safe without filling your disk. Instead of backing up every chunk, it intelligently prunes backups to include only the most important parts of your world, dramatically reducing backup size while preserving the areas that actually matter. A shared core with loader-specific shells lets it run on Fabric, NeoForge, Forge, and Bukkit/Spigot/Paper/Purpur/Folia from 1.7.x through the latest releases. The mod is completely serverside, so vanilla clients can still play while it is installed.
Backups can be triggered manually or run on a schedule. Backup frequency, along with many other settings such as a copy-blacklist prefilled with sensible defaults for common server setups, can all be configured. Compression can be set to zip or none, and you can set a maximum number of backups to keep. Optional cloud sync can upload finished backups to Google Drive, enforce the same retention cap remotely, and optionally delete local copies after a successful upload.
At the heart of Chronos is a custom Rust-native chunk pruning library, built for speed using MCA parsing and NBT processing. Chronos prioritizes aged world data. Chunks that are not old enough yet (based on configurable playtime thresholds) can be left out of a backup, so backups stay smaller while keeping the areas that matter.
Reliability across more than 100 Minecraft version and loader combinations is
backed by a dedicated testing toolchain. A Docker-based testServers
suite spins up a dedicated server for every supported combination, and GitHub
Actions CI cross-compiles native Rust libraries on Linux, Windows, and macOS
before building every variant JAR.
/chronos, with configurable retention and compression.