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Ravel Remapper
What it is
Ravel Remapper is a free, MIT-licensed IntelliJ IDEA plugin for remapping Java and Kotlin source files. It is built on IntelliJ’s Program Structure Interface and Mapping-IO. Supported formats include Mixins, Class Tweakers, and Access Wideners; MixinExtras Expression is not supported. In Fabric documentation, Ravel is used to migrate mappings between Yarn and Mojang mappings. From the editor’s Refactor menu, users choose mapping files, source and destination namespaces, and modules, then run the remap. Mapping files can be added manually or downloaded in the remapping dialog, and users may select individual modules or all modules. The project recommends committing changes before remapping. Afterward, users should search for TODO(Ravel) and resolve detected issues manually. Installation is available through JetBrains Marketplace or a ZIP from GitHub Releases for installation from disk. Ravel supports Linux, macOS, and Windows. The latest listed release is version 0.6.4, and listed releases show verified committer signatures.
For and against
For
- Free and MIT-licensed
- Supports Java and Kotlin
- Handles Mixins and Access Wideners
- Yarn-to-Mojang migration support
- Marketplace and ZIP installation
Against
- MixinExtras Expression is unsupported
- Detected issues require manual fixes
- Requires IntelliJ IDEA
- No visual editor
The verdict
Ravel provides an editor-based workflow for source remapping and mapping migration. Commit first and plan for manual review after each remap, especially where TODO(Ravel) markers appear.
Who it suits
Ravel suits developers working on Fabric mod source projects who need to migrate or remap Java and Kotlin mappings. It is intended for IntelliJ IDEA users on Linux, macOS, or Windows.
Plans and prices
Free
IntelliJ IDEA plugin · MIT-licensed
Read 9 Oct 2026 · github.com
On the record
- Audience
- The project documentation presents Ravel for developers migrating mappings in Fabric mod source projects.docs.fabricmc.net · read 9 Oct 2026
- How it works
- Ravel is based on IntelliJ PSI and Mapping-IO.github.com · read 9 Oct 2026
- Implementation
- It is based on IntelliJ's Program Structure Interface (PSI) and Mapping-IO.github.com · read 4 Oct 2026
- Installation
- Ravel is available from JetBrains Marketplace or as a ZIP from GitHub Releases for installation from disk.docs.fabricmc.net · read 9 Oct 2026
- Languages
- It supports remapping Java and Kotlin source files.github.com · read 9 Oct 2026
- Latest listed release
- The GitHub Releases page lists version 0.6.4 as the latest release.github.com · read 4 Oct 2026
- License
- The repository provides the software under the MIT License.github.com · read 9 Oct 2026
- Manual review
- The documentation advises reviewing code after remapping and searching for TODO(Ravel) markers to find detected problems.docs.fabricmc.net · read 9 Oct 2026
- Mapping files
- Users can add mapping files and choose source and destination namespaces for remapping.docs.fabricmc.net · read 9 Oct 2026
- Mapping input
- Users can add mapping files manually or use the download option in the remapping dialog.docs.fabricmc.net · read 4 Oct 2026
- Mapping migration
- Fabric documentation describes using Ravel to migrate between Yarn and Mojang mappings.docs.fabricmc.net · read 9 Oct 2026
- Mixin support
- It supports Mixins and MixinExtras, but not MixinExtras Expressions.github.com · read 9 Oct 2026
- Module selection
- Users can select individual modules or add all modules for remapping.docs.fabricmc.net · read 9 Oct 2026
- Other formats
- It supports Class Tweakers and Access Wideners.github.com · read 9 Oct 2026
- Precaution
- The project recommends committing changes before remapping source files.github.com · read 4 Oct 2026
- Product
- Ravel is an IntelliJ IDEA plugin for remapping source files.github.com · read 9 Oct 2026
- Security
- The repository's Releases page shows verified committer signatures for listed releases.github.com · read 9 Oct 2026
- Supported formats
- Ravel supports Mixins, Class Tweakers, and Access Wideners; MixinExtras Expression is not supported.github.com · read 4 Oct 2026
