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Ravel Remapper

github.com

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Spec score 7.9 #13 of 35 in Minecraft Mod Development Tools

What it is

Ravel Remapper is a free, MIT-licensed IntelliJ IDEA plugin for remapping Java and Kotlin source files. Built on IntelliJ’s Program Structure Interface and Mapping-IO, it supports Mixins, Class Tweakers, and Access Wideners; MixinExtras Expression is not supported. Developers can migrate mappings between Yarn and Mojang mappings, as described in Fabric documentation. From the editor’s Refactor menu, users choose mapping files, source and destination namespaces, and modules, then run the remap. Mapping files may be added manually or downloaded in the dialog, and users can select individual modules or all modules. The project recommends committing changes first, then searching for TODO(Ravel) and fixing detected issues manually. Installation is available through JetBrains Marketplace or a ZIP from GitHub Releases. It runs on Linux, macOS, and Windows; the latest listed release is version 0.6.4.

Spec sheet

Product
Ravel is an IntelliJ IDEA plugin for remapping source files.Read 9 Oct 2026 · github.com
Audience
The project documentation presents Ravel for developers migrating mappings in Fabric mod source projects.Read 9 Oct 2026 · docs.fabricmc.net
Security
The repository's Releases page shows verified committer signatures for listed releases.Read 9 Oct 2026 · github.com
License
The repository provides the software under the MIT License.Read 9 Oct 2026 · github.com
How it works
Ravel is based on IntelliJ PSI and Mapping-IO.Read 9 Oct 2026 · github.com
Implementation
It is based on IntelliJ's Program Structure Interface (PSI) and Mapping-IO.Read 4 Oct 2026 · github.com
Installation
Ravel is available from JetBrains Marketplace or as a ZIP from GitHub Releases for installation from disk.Read 9 Oct 2026 · docs.fabricmc.net
Languages
It supports remapping Java and Kotlin source files.Read 9 Oct 2026 · github.com
Latest listed release
The GitHub Releases page lists version 0.6.4 as the latest release.Read 4 Oct 2026 · github.com
Manual review
The documentation advises reviewing code after remapping and searching for TODO(Ravel) markers to find detected problems.Read 9 Oct 2026 · docs.fabricmc.net
Mapping files
Users can add mapping files and choose source and destination namespaces for remapping.Read 9 Oct 2026 · docs.fabricmc.net
Mapping input
Users can add mapping files manually or use the download option in the remapping dialog.Read 4 Oct 2026 · docs.fabricmc.net
Mapping migration
Fabric documentation describes using Ravel to migrate between Yarn and Mojang mappings.Read 9 Oct 2026 · docs.fabricmc.net
Mixin support
It supports Mixins and MixinExtras, but not MixinExtras Expressions.Read 9 Oct 2026 · github.com
Module selection
Users can select individual modules or add all modules for remapping.Read 9 Oct 2026 · docs.fabricmc.net
Other formats
It supports Class Tweakers and Access Wideners.Read 9 Oct 2026 · github.com
Precaution
The project recommends committing changes before remapping source files.Read 4 Oct 2026 · github.com
Supported formats
Ravel supports Mixins, Class Tweakers, and Access Wideners; MixinExtras Expression is not supported.Read 4 Oct 2026 · github.com
Supported languages
Ravel supports remapping Java and Kotlin source files.Read 4 Oct 2026 · github.com
Workflow
Users open the remapping action from the editor's Refactor menu, select mappings and modules, and run the remap.Read 4 Oct 2026 · github.com

Plans and prices

Free Free IntelliJ IDEA plugin · MIT-licensed Read 9 Oct 2026 · github.com

Every Ravel Remapper plan and price →

Strong points and limits

Strong points

  • Free and MIT-licensed
  • Supports Java and Kotlin source
  • Handles Mixins and Access Wideners
  • Can migrate Yarn and Mojang mappings
  • Available through JetBrains Marketplace

Limits

  • MixinExtras Expression is unsupported
  • Detected issues require manual fixes
  • Requires IntelliJ IDEA
  • Remapping workflow recommends committing first

Who it suits

Ravel suits developers working on Fabric mod source projects who need Java or Kotlin mapping migration. It is intended for IntelliJ IDEA users on Linux, macOS, or Windows.

Verdict

Ravel provides a focused IntelliJ workflow for remapping supported Java and Kotlin formats. It is free across major desktop platforms, but unsupported formats and manual issue review remain important constraints.

Where Specifiction places it

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