Access: Open the N-Panel (sidebar) in the 3D Viewport and look for the Asset Manager tab.

- Scan Scene: Scan Blendfile for any missing Assets. You will see a list of missing Assets below with options to find the object using the asset. 

- Purge:  Blenders Internal Purge

- Pack: Blenders internal Pack

- Unpack: Blenders internal Unpack

- Consolidate: Copy all external and internal assets into a single folder and update paths

- Relative: Blenders internal make paths relative

- Absolute: Blenders internal make paths absolute

- Dedupe: Point duplicate filenames to a single valid source path to reduce redundacy

- Seletected (Data & Mat): Make selected library linked data blocks local to this file

- Make Local (all): Make all library linked data blocks local to this file

- Relink to Folder: Search a choosen folder and subfolder to find and relink missing assets.

- Relink Global Paths: Relink missing Paths using the active global paths defined in preferences.

- Global Paths: Set Global Paths for assets which is used by the Relink global paths Option to search for assets.

- Search & Replace: Replaces strings from Assets paths. (eg. _4k with _2k  or .png with .jpg)

- Asset Info: Get informations about all used assets in the file.