If you are a wanting to publish on the Bedrock Marketplace: You must learn the Bedrock addon format from scratch. Start with the official Microsoft documentation on Behavior Packs.
Before diving into the conversion process, it's essential to understand what these file formats are and why they're fundamentally different.
Recreate custom timers using Bedrock animation controllers or the Scripting API to run commands or scripts at specific intervals. Step 4: Bundle into an MCADDON
You must manually recreate the mod’s features using Bedrock’s Behavior Packs (JSON/JavaScript) and Resource Packs . Tools for help: Convert Jar To Mcaddon
It is important to clarify that converting a file directly to a file is technically impossible
Because of these fundamental architectural differences, a direct, one-click file extension change from .jar to .mcaddon is impossible. However, developers and players can successfully port content from one ecosystem to the other using dedicated conversion tools and manual rebuilding strategies. Understanding the Architecture: Jar vs. Mcaddon
Java mods often use custom Java math and classes to create completely new game mechanics (like custom dimensions or complex inventory systems). Bedrock add-ons are limited by what the JSON components and JavaScript API allow. If you are a wanting to publish on
The project is focused on an “MVP” (Minimum Viable Product) that targets simple block conversions. More complex conversions (items, entities, and advanced logic) are planned for future releases. An end‑to‑end test – converting a simple copper block mod into a working .mcaddon – is actively being validated within the project’s GitHub issues.
Which (Mobile, Windows, or Console via Realms) are you targeting?
You cannot directly convert a .jar file into a .mcaddon file because they serve entirely different purposes: While converting basic blocks
Right-click and choose > Compressed (zipped) folder (or use 7-Zip to create a standard .zip archive).
While converting basic blocks, items, and simple mobs is straightforward, advanced Java mods face steep technical hurdles:
Converting a JAR to Mcaddon requires: