--- title: "How to pregenerate chunks on a Minecraft server with Chunky | StreetHosting" description: "Cut exploration lag by pregenerating your world with the Chunky plugin. Set the radius, run it with the server empty and avoid stutters far from spawn." url: "https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky" type: "page" language: "en-US" --- Minecraft · 3 min · Intermediate Published on Jun 17, 2026 · Updated on Jun 17, 2026 # Pregenerate chunks with Chunky Generating terrain is the heaviest job on the server. With Chunky you build the world ahead of time, while nobody is online, so player exploration runs without stutters. By [Equipe StreetHosting](https://streethosting.com.br/en/autores#equipe-streethosting) · StreetHosting infrastructure and support team [Performance and optimization](https://streethosting.com.br/en/guides/topics/performance) [Minecraft plugins](https://streethosting.com.br/en/guides/topics/plugins) Summarize with: [](https://chat.openai.com/?q=Summarize%20the%20key%20points%20of%20this%20StreetHosting%20guide%3A%20https%3A%2F%2Fstreethosting.com.br%2Fen%2Fguides%2Fminecraft%2Fpregenerate-chunks-minecraft-chunky.%20Highlight%20the%20step-by-step%20instructions%2C%20the%20prerequisites%20and%20the%20most%20common%20mistakes. "ChatGPT") [](https://claude.ai/new?q=Summarize%20the%20key%20points%20of%20this%20StreetHosting%20guide%3A%20https%3A%2F%2Fstreethosting.com.br%2Fen%2Fguides%2Fminecraft%2Fpregenerate-chunks-minecraft-chunky.%20Highlight%20the%20step-by-step%20instructions%2C%20the%20prerequisites%20and%20the%20most%20common%20mistakes. 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"Perplexity") Share: [](https://x.com/intent/tweet?text=How%20to%20pregenerate%20chunks%20on%20a%20Minecraft%20server%20with%20Chunky&url=https%3A%2F%2Fstreethosting.com.br%2Fen%2Fguides%2Fminecraft%2Fpregenerate-chunks-minecraft-chunky "Share on X") [](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fstreethosting.com.br%2Fen%2Fguides%2Fminecraft%2Fpregenerate-chunks-minecraft-chunky "Share on Facebook") [](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Fstreethosting.com.br%2Fen%2Fguides%2Fminecraft%2Fpregenerate-chunks-minecraft-chunky "Share on LinkedIn") [](https://wa.me/?text=How%20to%20pregenerate%20chunks%20on%20a%20Minecraft%20server%20with%20Chunky%20https%3A%2F%2Fstreethosting.com.br%2Fen%2Fguides%2Fminecraft%2Fpregenerate-chunks-minecraft-chunky "Share on WhatsApp") For agents: Copy as Markdown [.md](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky.md) In this guide 5 sections * [Why pregenerate](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#por-que-pre-gerar) * [Install Chunky](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#instalar-chunky) * [Run the generation](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#rodar-a-geracao) * [World border](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#world-border) * [When it is worth it](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#quando-vale) Quick answer To **pregenerate chunks**, install the **Chunky** plugin, set the center and a radius in blocks, and run the generation with the server empty. Then set the world border to the same radius. That way the heavy work of creating terrain happens with nobody online, and player exploration runs without stutters. ## Why pregenerate[](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#por-que-pre-gerar) Every time a player walks into new terrain, the server has to create that piece of the world on the spot. At peak hours, with several people exploring at once, that turns into lag for everyone. Pregenerating does the work ahead of time and is one of the most effective tricks to [reduce lag on Paper](https://streethosting.com.br/en/guides/minecraft/reduce-lag-paper-server). ## Install Chunky[](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#instalar-chunky) 1. Download the Chunky jar for your build version. 2. Put it in the `plugins` folder and restart. 3. Set the center of the world, usually the spawn. 4. Choose the radius in blocks that you want to generate. Start with a moderate radius. A huge number can run for hours and fill your plan's disk without you noticing. ## Run the generation[](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#rodar-a-geracao) Start the generation with no players on the server. Chunky shows the progress and you can pause and resume it. On large worlds, leave it running overnight. This is also a great step when [preparing a new season](https://streethosting.com.br/en/guides/minecraft/prepare-minecraft-server-new-season). On modpacks, generation is even heavier because of the extra biomes and structures. Set aside more time and more disk space. ## World border[](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#world-border) Generating without a limit does not solve it on its own, because players can always go further. Set the world border to the same radius you generated. That way nobody leaves the finished area, and the server never has to create new terrain in the middle of peak hours. Combine it with a [view distance](https://streethosting.com.br/en/guides/minecraft/minecraft-server-view-distance) adjustment for an even bigger gain. ## When it is worth it[](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#quando-vale) * Survival server with frequent exploration * Community with peaks of players exploring together * World border set to the same radius you generated * Enough disk space for the finished world Pregeneration shines on survival servers and heavy modpacks. To sustain fast generation and smooth gameplay, a base with NVMe and high clock speeds makes a difference. Check out [Minecraft Pro](https://streethosting.com.br/en/minecraft-pro) or a [Ryzen VPS](https://streethosting.com.br/en/vps/ryzen). In this guide * [Why pregenerate](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#por-que-pre-gerar) * [Install Chunky](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#instalar-chunky) * [Run the generation](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#rodar-a-geracao) * [World border](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#world-border) * [When it is worth it](https://streethosting.com.br/en/guides/minecraft/pregenerate-chunks-minecraft-chunky#quando-vale) ## Frequently asked questions Why does generating chunks ahead of time reduce lag? Generating new terrain is one of the heaviest tasks on the server. When it happens while players are online and exploring, it causes stutters. Pregenerating moves that cost to a moment when nobody is playing. What radius should I use? It depends on how much your community will explore. Survival servers with a world border usually generate a radius of a few thousand blocks. A huge radius takes a long time and uses a lot of disk. Can I play while Chunky is generating? Better not to. Generation uses a lot of CPU and disk. Running it with the server empty is faster and avoids lag for anyone who is connected. Does pregenerating take up a lot of space? Yes. Every generated chunk becomes a file in the world. The larger the radius, the more disk it uses. Size the radius together with the storage on your plan. Next step See Minecraft Pro Managed hosting on Ryzen with modpacks, optimized Paper and technical support. [See Minecraft Pro](https://streethosting.com.br/en/minecraft-pro) [Modpack hosting Forge and Fabric with RAM sized for heavy packs and fast activation.](https://streethosting.com.br/en/minecraft-modpack) [See Ryzen VPS Ryzen 9 9950X VPS in São Paulo with root access, NVMe and gamer Anti-DDoS.](https://streethosting.com.br/en/vps/ryzen) ## Related guides [Minecraft Intermediate How to reduce lag on a Minecraft Paper server (TPS and mspt) Lag is not 'the host's fault' until you measure it: high mspt comes from the world, the configuration and the code running in the tick. This guide puts diagnosis ahead of aggressive tuning. 6 min Read guide](https://streethosting.com.br/en/guides/minecraft/reduce-lag-paper-server) [Minecraft Intermediate How to optimize view distance on a Minecraft server A high view distance is tempting, but every extra chunk costs RAM and CPU. The right setting balances the visual horizon with stable TPS for your community. 2 min Read guide](https://streethosting.com.br/en/guides/minecraft/minecraft-server-view-distance) [Minecraft Intermediate How to prepare a Minecraft server for a new season A new season is more than resetting the world: it involves community expectations, properly sized hardware, updated plugins and a marketing window that converts returning players and referrals. 4 min Read guide](https://streethosting.com.br/en/guides/minecraft/prepare-minecraft-server-new-season) [← Back to the Guide Center](https://streethosting.com.br/en/guides)