ABVME

Asset Bundles Viewer Modifier and Exporter

A simple tool for viewing, modifying, and exporting Unity Asset Bundles. Easy to use like AssetStudio, but focused on making asset modification simpler. Built with Python using UnityPy.

📸 Screenshot

Click to expand

Usage

• Pre-built Windows builds from Releases:
  • Setup (ABVME-Windows-x64-Setup.exe) — per-user install under Local AppData; Start Menu; optional .bundle / .unity3d file association; can update from About
  • Portable (ABVME-Windows-x64-Portable.zip) — unzip and run; updates via the Releases page
• Linux: portable zip from Releases
• Or clone and run from source:

  git clone https://github.com/com55/ABVME.git
  cd ABVME

  • Using uv (Recommended)

    uv sync
    uv run main.py

  • Using pip

    pip install -r requirements.txt
    python main.py

Features

• Asset Preview - View asset contents directly in the app (lazy Dump tab; copy image from preview)
• Asset Export - Export single or multiple selected assets
• Asset Replacement - Confirm before every replace (button / menu / drag-drop)
  • Texture2D — optional Texture Replace Options (format, mipmaps, filter/wrap, and more); short confirm with Options…, or always show the full dialog
  • TextAsset — accepts any non-bundle file; if the suffix is not in that object's container, a confirm dialog appears
• Bundle Saving - Save modified AssetBundles back to disk (all / selected / per-bundle)
• Save / Options - Compression (including LZ4HC), resource patch method (Inline / Orphan cleanup / Rebuild .resS), and CRC correction (Off / On / Auto for Windows); Save dialog can collapse options and list only changed files
• Table - Size column; empty name/container/source shown as dim (none); replaced rows highlighted green; filter by Type and Source File
• Menus - File / Asset / Options / About; Display all assets; in-app Check for Updates from About
• Open Folder - Load top-level .bundle / .unity3d from a folder (Ctrl+Shift+O); confirms before loading 100+ files
• Drag & Drop
  • Drop files anywhere on the window (table, preview, and empty space all count)
  • AssetBundles (.bundle, .unity3d, or UnityFS) open; an overlay shows Open vs Replace while dragging
  • Other files replace the selected asset
• Open from Explorer - Selecting multiple bundle files and opening them loads everything into one window (launches within ~500ms are merged)
• Shortcuts - Ctrl+O, Ctrl+Shift+O, Ctrl+Shift+S, Ctrl+R, Ctrl+E, Ctrl+Q
• Supported asset types
  • TextAsset — view, export, replace
  • Texture2D — view, export, replace

TODO

• Mesh support
• CRC Corrector - Make CRC32 the same as the original file after modification
• Bundles Migration - Transfer modifications to new base files
• Atlas Image Unpacker
• SpineSkeletonDataConverter integration (add-on)
• SpineViewer to render preview file integration (add-on)
• BA-AD integration to find and download files when migrating to other platforms where they were not downloaded (add-on)

Contributing

• Found a bug or have a suggestion? Please open an issue
• Pull requests are welcome!

Acknowledgments

• AssetStudio - The main inspiration
• UnityPy - Core library
• PhotoViewer - PhotoViewer implementation reference

License

MIT