Save Editing Tools

A complete toolkit for decrypting, editing, and managing your Borderlands 4 save files. Built in Rust for speed and reliability.

Download

Open save files directly in your favorite editor. Changes are automatically encrypted and saved back.

bl4 edit -i 1.sav

Inspect character stats, currencies, experience, and any other save data with simple commands.

bl4 get -i 1.sav --level

Set cash, eridium, character level, experience points, and more with precise path-based commands.

bl4 set -i 1.sav "state.currencies.cash" 999999

Export saves to YAML for manual editing or version control. Re-encrypt when you're done.

bl4 decrypt -i 1.sav -o save.yaml

Hash-based backup system preserves your original saves. Never lose progress due to a bad edit.

bl4 edit -i 1.sav --backup

Your Steam ID is used to derive the encryption key for your save files. Find it in your Steam account page.

bl4 configure --steam-id 76561197960521364

Save files are located in your Documents folder under the Borderlands 4 save directory.

~/Documents/My Games/Borderlands 4/Saved/SaveGames/<steamid>/Profiles/client/

Open a save file in your editor, make changes, save, and the tool handles encryption automatically.

bl4 edit -i 1.sav

The bl4 library is available as a Rust crate and WebAssembly module for building your own tools.

cargo add bl4

npm install bl4