Hopper is a command-line tool to extract Minecraft resources for use in resource packs.

You should know how to create resource packs and run command-line tools before using Hopper.

Usage

Run hopper.exe -help for a list of flags and their purpose.

Running the following command will copy all assets with names containing either blaze or magma from 1.20.1 to an assets folder in the nether folder. Filtered language files (for file names containing en) and filtered sounds.json will also be outputted.

hopper.exe -version 1.20.1 -pattern blaze,magma -output nether -lang en -sounds

This will only work if you have downloaded and opened 1.20.1 at least once, and if the nether folder exists.

Disclaimer

Hopper is not an official Minecraft product and is not approved by or associated with Mojang or Microsoft.