
Zap
A simple server-side optimization modpack, designed to make your server zapping fast!
Screenshots

About this Modpack
Zap
A small collection of Fabric mods designed to optimize the server side of Minecraft.
Inspired by Fabulously Optimized!
🌃 Featuring
- Debugify, by isXander
- FerriteCore, by malte0811
- Krypton, by astei
- Lithium, by 2No2Name
- MemoryLeakFix, by fxmorin
- No Chat Reports, by Aizistral
- ServerCore, by Wesley1808
- Your Options Shall Be Respected, by shedaniel
Install instructions
There are various ways you can install Zap in your server:
1. Using mrpack-install
mrpack-install is a new tool which allows for easy server modpack installations.
To install Zap:
- Install mrpack-install in your server.
- Run this command on your server's command line:
mrpack-install yT9inLnJ - Zap should now be installed in your server!
To update Zap:
- Run this command on your server's command line:
mrpack-install update - Zap should now be updated!
2. Install through launcher, and move to server folder
Install Zap using any launcher of your choice.
After that, simply move the mods folder from the downloaded modpack to your server folder.
3. Use packwiz-installer to install and auto-update on launch
It is essential to have server backups if you use this method!!
packwiz-installer is a useful tool that lets you automatically install and update a modpack through the pack.toml file of that pack.
First, you need to install packwiz-installer-bootstrap. After that, move it to the same folder as your server's Fabric loader jar. This will usually be the root of the server.
java -jar packwiz-installer-bootstrap.jar -g -s server https://codeberg.org/RaptaG/Zap/raw/branch/main/modpack/pack.toml
If you are running this server through a batch file or something like that, you can add this command before your server's launch command and it should work just fine.
You can also refer to packwiz's wiki
4. With Superpack
You can use a useful tool by Gaming32 called Superpack to download this modpack's content and extract it to a folder. Here are the Superpack releases.
Thanks to Devin for allowing me to use some of his instructions from Adrenaserver!
❓ FAQ
- Q: Backports? Support for non-latest versions?
A: Zap aims for the latest Minecraft stable release. Therefore there'll be no backports nor support for non-latest versions of the game.
- Q: How does version numbering work?
A: The format is x.y.z. x changes with every new major Minecraft release, y with every new minor Minecraft release and z with every modpack update within the minor MC release.
- Q: Why is chat reporting disabled on my server?
A: To protect the players' privacy and accounts from inaccurate bans, chat reporting is disabled by Zap as a whole. For more information refer to the FO FAQ regarding chat reporting.
👥 Credits
Thanks to:
- robotkoer, for making the amazing Fabulously Optimized modpack
- Every single developer of all the mods and included in Zap
- comp500, for creating the amazing packwiz tool, which I use to maintain Zap
- Modrinth, for making this pack possible to be published to a greater Minecraft modding audience
- Codeberg, for hosting an open source, Forgejo based git service where I host Zap
📜 License
This modpack is open source and licensed under the GNU LGPLv3 License.
Please refer to the source code for more legal info.
Available Versions
How to Set Up a Zap Server
Order Server
Choose at least 4 GB RAM (6 GB recommended for Zap). Based on player count: per 8 players.
Install Modpack in Dashboard
Open the modpack browser in the dashboard, search for "Zap" and click "Install". The fabric loader and Minecraft 1.20.1 are configured automatically.
Start Server & Play
Start the server – all mods are loaded automatically. Share the server IP with friends and play together!
Frequently Asked Questions
Zap server crashes or won't start – what to do?
Most common causes: insufficient RAM or wrong fabric loader. Check latest.log for "OutOfMemoryError" → increase RAM to at least 6 GB. For "Mixin" or "ClassNotFoundException" errors: modpack version and loader don't match. With Mado Hosting, loader and Minecraft version are auto-configured on modpack install – preventing most startup issues.
How much RAM does a Zap server really need?
Minimum 4 GB, recommended 6 GB for stable performance. per 8 players. Important: Minecraft modpacks need more RAM than vanilla – plan extra per additional player. With Mado Hosting, you can scale RAM up live at any time without data loss (from €8/month).
Can I add custom mods to Zap without conflicts?
Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.20.1). Common issues: ID conflicts with recipe mods and incompatible coremod versions. The Mado dashboard mod browser only shows compatible mods and warns about known conflicts.
Zap server lagging – performance tips
1) Increase RAM to 6 GB+. 2) Reduce server view-distance to 8 (server.properties). 3) Pre-generate chunks with the "Chunky" plugin. 4) Use /spark profiler to check which mods consume the most tick time. With Mado Hosting, all servers run on NVMe SSDs with dedicated CPU cores – eliminating hardware as a bottleneck.
Similar Modpacks
Rent Zap Server
Start your own server with automatic modpack installation.
Details
- License
- GNU Lesser General Public License v3.0 only
- Server-side
- Required
- Client-side
- Unsupported