Archive Editor

by J_SUEY·v1.033a·Updated 2025-09-23

A lightweight, Python-based Borderlands 4 save editor. Archives can be exported to YAML format, values ​​can be safely edited and written back to the archive. An executable version is provided.

About this mod Machine translation

A lightweight, Python-based Borderlands 4 save editor. Archives can be exported to YAML format, values ​​can be safely edited and written back to the archive. An executable version is provided.

Borderlands 4 Save Editor

🎮 **A lightweight, Python-based Borderlands 4 save editor**, supporting Epic and Steam platforms!

Learn more: GitHub project page

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✨ Main functions

  • **YAML Export**: Export BL4 archives to human-readable YAML format
  • **Character Attribute Editing**: Modify levels, experience points, skills and progress nodes
  • **Safe writeback**: Safely write modified data back to the valid archive file
  • **Experimental Features**: Shift keys (server side) and some appearance features (may have bugs)

⚠️ **Important reminder**: Please back up your archive before use! This tool directly reads and writes archive files. Please keep a manual backup before modification.

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🚀 Quick Start

Quick start guide provided by Kuroba Sensei:

**Environmental requirements:**

  • Make sure Python and pip are installed
  • Install necessary dependency packages:

bash

pip install "pyyaml>=6.0" "typer>=0.12.3" "rich>=13.7.1" "pydantic>=2.7.0" "pycryptodome>=3.15.0"

📋 YAML example (excerpt)

yaml

class: Char_DarkSiren

char_name: Vex

player_difficulty: Hard

experience:

  • type: Character

level: 50

points: 3430227

  • type: Specialization

level: 57

points: 6863836

🔧 Technical Reference

A partial key and weapon decoder reference based on the Borderlands 4 archive tool.

💡 **Usage Suggestions**: This is a tool under development. It is recommended to test the function on a small-scale archive first to ensure that you are familiar with the operation process before applying it to the main archive.

Install & use Install: follow the bundled instructions

  1. Unzip the archive from playbuff and read the bundled readme / instructions first.
  2. There is no universal mod manager for this game: some mods replace game files directly, some go into a game-specific Mods folder, and some need a game-specific community loader or tool first — follow the bundled readme.
  3. Place the files exactly as the readme says; mods with listed dependencies need those installed too.
  4. Launch the game to confirm it loaded; some games require enabling mods in settings or an in-game mod menu.

Install locations vary a lot between games and mods — the bundled readme is the most reliable guide.

File & checksum

Filename
bl4 save editor
File size
11.2 MiB