File System Library

Lambda Works - Feb 26, 2020

Open, Save, Copy, Move and delete files and directories in tranquillity!

  • Supported Platforms
  • Supported Engine Versions
    4.23 - 4.27
  • Download Type
    Engine Plugin
    This product contains a code plugin, complete with pre-built binaries and all its source code that integrates with Unreal Engine, which can be installed to an engine version of your choice then enabled on a per-project basis.

Video showcase:

Demo: Windows / Mac


File System Library is cross platform blueprint library that allows you to easily interact with files and directories. It includes basic features like copy, move and delete for both files and directories. It also allows you to use your operating system's default dialog windows to open or save files from any blueprint class. This plugin works both in editor and packaged builds (dev, debug and shipping)!

Technical Details


  • Open/Save File Dialog: Prompt the user to save or select a file on his computer.
  • File Operations: Copy, move, delete and rename any files.
  • Folder Operations: Copy, move, delete and rename any folder/directories.
  • File String I/O: Load and create files on the go from strings.

MAC USERS: If you encounter issues when packaging, move the plugin from /Users/Shared/Epic Games/UE_4.XX/Engine/Plugins/Marketplace/FileSystemLibrary to [Project Name]/Plugins/FileSystemLibrary.

Last updated 07/09/20:

- All dialogs now work in-editor (including Editor Utility Widgets, and Blutilities).

- Node update, OpenDirectory. Opens Explorer or Finder at the specified path.

Number of Blueprints: 1

Number of C++ Classes: 4

Supported Development Platforms: All Desktops (Win, MacOS)

Supported Target Build Platforms: All Desktops (Win, MacOS)

Documentation: Commented demo example included with plugin