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====== Library Folder ======

The library folder is a large cache containing imported assets and other data from the project after import. It is generally always 100% safe to delete the Library folder. As Unity has become more stable, this has become much less necessary than it once was.

===== binary2text.exe =====

Unity provides this tool in ''C:\Program Files\Unity\Hub\Editor\2020.2.1f1\Editor\Data\Tools'' which allows you to inspect data in the Library folder.

===== Library/metadata =====
//(AssetDatabase v1. See [[#libraryartifacts|Library/Artifacts]] for AssetDatabase v2.)//

Contains the serialized, imported data keyed by an asset's GUID. ''binary2text.exe'' can be used to dump and view the cached imported data.((https://forum.unity.com/threads/textual-scene-file-format.361527/#post-2346984))

===== Library/Artifacts =====
//(AssetDatabase v2. See [[#librarymetadata|Library/metadata]] for AssetDatabase v1.)//

During import of an asset, the asset importer is run, which produces some number of Unity serializable assets.

The Library/Artifacts folder stores these post-import generated files for every asset, keyed by the hash of the generated asset.((Note that this is not keyed by the GUID of the asset, as it was in the last asset database.)) These generated assets are also called ''producedFiles'' in Unity internal.

You can look up a disk Asset's post-import representation by ((Note: This only seems to work on 2020.2.1f1. On 2021.2.0a6.1011, the editor doesn't log the hash, or not always?): 
  - Opening the Unity ''Editor.log''
  - Right-click on the asset, 'Reimport'
  - In the resulting import debug output, locate the phrase ''producedFiles[0].contentHash:''
  - The key for that recently imported asset will be at the printed hash.

''binary2text.exe'' can be used to dump and view the post-import asset data in this folder.((https://forum.unity.com/threads/textual-scene-file-format.361527/#post-2346984))

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