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Looks like the spiders padded through here. Pick a plugin and it will show up here. Continue shoppingJava to Bedrock Resource Pack Converter
Turn a Java pack's custom item models into a Bedrock .mcpack plus Geyser mappings, right in your browser.
A Bedrock pack and Geyser mappings
| Bedrock item | Java item | Type | Status |
|---|---|---|---|
| ruby_sword | minecraft:diamond_sword · CMD 1001 | 3D | OK |
| coin | minecraft:paper · CMD 12 | 2D | OK |
| crate_key | minecraft:tripwire_hook · CMD 3 | 3D | Check |
- Add your Java pack
- Check the options
- Convert
- Install on Geyser
Turns the custom items in a Java resource pack into a Bedrock .mcpack plus Geyser mappings. Works with custom_model_data and 1.21.4+ item models, entirely in your browser.
How Bedrock players see Java custom items
Bedrock players join Java servers through Geyser. Geyser can't use a Java resource pack directly: Bedrock needs its own pack format, and Geyser needs a mappings file that says which Java item (and which custom_model_data or item model) becomes which Bedrock item. This tool builds both from your Java pack.
Installing the result on a Geyser server
| File | Where it goes |
|---|---|
packs/<name>.mcpack |
Geyser's packs folder: plugins/Geyser-Spigot/packs on Paper/Spigot, plugins/Geyser-Velocity/packs on Velocity, config/Geyser-Fabric/packs on Fabric. |
custom_mappings/<name>.json |
The custom_mappings folder next to Geyser's config.yml. |
config.yml |
Make sure enable-custom-content: true is set. |
Restart the server after copying the files; Geyser only reads mappings at startup. If you run Geyser on a proxy (Velocity or BungeeCord), install the files there, not on the backend servers. Floodgate doesn't need any changes: it only handles Bedrock player logins.
What gets converted
| Java | Bedrock |
|---|---|
Override with custom_model_data (1.14 – 1.21.3) |
Geyser legacy mapping on that Java item |
items/*.json range_dispatch on custom model data (1.21.4+) |
Geyser legacy mapping with the same threshold |
items/*.json select on custom model data strings |
Geyser definition with a match predicate |
Custom item_model definitions (assets/<ns>/items) |
Geyser definition on the base item you choose (default minecraft:paper) |
item/generated and item/handheld models |
Item texture in item_texture.json; handheld items are held like tools |
Models with elements
|
Geometry, atlas texture, attachable and animations, plus an inventory icon |
Damage-based models (the old damage predicate) only exist in Geyser's format 1, so they're written to the v1 mappings file. Tint colours (like leather or potion overlays) and animated textures (the first frame is used) can't be carried over exactly.
Tips for a clean conversion
- Convert one pack that contains everything. If plugins ship separate packs, combine them with the Resource Pack Merger first.
- Run the Resource Pack Validator on the Java pack to fix missing textures before converting.
- Old
custom_model_datapacks work as they are. To update the Java side to 1.21.4+, use the CustomModelData converter; this converter reads both formats.
Questions
What does the Java to Bedrock converter convert?
Custom items: models chosen with custom_model_data overrides (1.14 – 1.21.3), 1.21.4+ item model definitions in assets/*/items, and item_model component definitions used by newer plugins. Flat items become Bedrock item textures; 3D models become Bedrock geometry with attachables, so they show in the hand. It also writes the Geyser custom item mappings.
Does it convert blocks, armor or the whole texture pack?
No. It focuses on custom items, which is what Geyser servers need for plugins like ItemsAdder, Oraxen, Nexo or crates. Vanilla texture replacements, blocks, armor, fonts and GUI textures aren't converted.
Are my files uploaded?
No. The conversion runs entirely in your browser. Your pack is read on your own computer and the .mcpack is built there too.
Which Geyser mappings format does it create?
Format version 2, the current one, with legacy custom_model_data entries and 1.21.4+ definition entries. A format version 1 file is also offered for older Geyser builds; it can't express item_model definitions or string custom model data.
My 3D item sits in the wrong place in the hand. How do I fix it?
The hand position comes from the Java model's display settings. Bedrock's hand bones differ from Java's, so open Options and adjust the third-person or first-person offset, then convert again. The offset applies to every 3D item in the pack.
Why does Bedrock show a magenta and black texture?
A texture the model points to isn't in the zip, for example because it comes from another pack or from vanilla. Merge the packs first with the Resource Pack Merger, or add the missing PNG, then convert again. The results table lists every missing texture.
Do Bedrock players need to install anything?
No. Put the .mcpack in Geyser's packs folder and Geyser sends it to Bedrock players when they join.
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