String Dupe 99

This project aims to make assend string dupers to the godly plane, this simple datapack makes puting 1 string in a crafting table fill your inventory with string.

1.8K Downloads

datapackfabricforgeneoforgequilt

Rent Server with this Mod

About this Mod

This datapack is simple, place one string the middle of a crafting table and get 64, then place the 64 back in and your whole inventory is filled.

The datapack is super lightwieght and has 0 impact on preformance.
This datapack is also downloadable as a mod.

Available Versions

It works trustrelease

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11fabric, forge, neoforge, quilt

December 25, 2025

It works trustrelease

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11datapack

December 25, 2025

How to Install String Dupe 99 on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set datapack Loader

In the panel under "Egg", select the datapack loader and matching Minecraft version (1.21.11).

Install Mod

Open the mod browser in the dashboard and search for "String Dupe 99". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

datapackfabricforgeneoforgequilt

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+9 more)

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

String Dupe 99 server crashes on startup – what to do?

Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is String Dupe 99 compatible with datapack and fabric and forge and neoforge and quilt?

String Dupe 99 officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 1.21.11, 1.21.10, 1.21.9. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with String Dupe 99 – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if String Dupe 99 consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.