Block Switch Minecraft Java Block Replacer

Replaces blocks in your minecraft java world with blocks that you specify. Specify a single block to replace with another or use a prefix match rule to change groups of blocks. The tool works on a principle of specificity. Block match rules will override prefix match rules as they are more specific. For example to change all blocks belonging to the mod ae2 use a Prefix Match rule with the value ae2:.

Select your world
Be sure to copy your minecraft world to another folder (For example your desktop) before proceeding
Backup your files first! This tool can corrupt your files! Your browser will ask you to grant permission to read and write to all files in the selected folder.

Scan blocks (optional)

Scan minecraft world file to check the blocks that already exist in the world.

Replacement Rules

Block match rules will override Prefix match rules.

Prefix Match Rules

Block Match Rules

Update your World

Update files using your replacement rules. This could take a while.
A folder is needed.
Replacement rules are needed.
Copy the folder containing your world files back into your Minecraft worlds folder.

Blocks Found In World

Waiting for scan