Editors and Tools
These tools prepare files for your device inside your browser, so files are opened locally and nothing is uploaded.
Getting started
System Finder See which folder names are assigned automatically, the cores for each system and the BIOS files it needs. 
BIOS Checker Check your BIOS folder for missing, misnamed and wrong version files. Content and storage
Core Assign Editor Edit the systems, Libretro cores, External emulators, BIOS files and requirements in core.json. 
Name Lookup Editor Create friendly folder names and custom content names for Explore Content. 
Playlist Builder Build multi-disc game playlists, Wasabi media playlists and channel lists. 
Activity Tracker Importer Read and edit your play history, and save a Year in Review to share. Settings
Themes
Theme Validator Check a theme's structure, scheme files, glyphs and images before you share it. 
Glyph Gallery Browse every glyph the bundled theme provides and see where each one appears. 