Import Activity window reference
Reference for the Import Activity window.
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The Import Activity window displays information about how Unity imported assets into your project. To open the window, go to Window > Analysis > Import Activity. The window contains the following information:
The Import Activity window with an asset selected.
Toolbar
At the top of the window, you can select from the following options which change how the data is displayed:
Option | Description |
|---|---|
| Show Overview | Select this option to display the Import Activity Overview panel. |
| Options | Adjust the information displayed in the Import Activity window. Choose from the following options:
|
Asset list
On the left side of the Import Activity window, a list of assets that Unity has imported into your project is displayed. The following information is available:
Property | Description |
|---|---|
| Asset | The name of the asset and its extension. |
| Last Import | When Unity last imported the asset. |
| Duration(ms) | The amount of time that the last import took in milliseconds. |
Information panel
The right of the window displays information about the selected asset, or the Import Activity Overview panel, if you select Show Overview in the toolbar.
Asset information
When you select an asset from the asset list, the information panel displays the asset information. This following details are available:
Title | Description |
|---|---|
| Asset | The name of the selected asset. Select this field to locate the asset in the Project window. |
| GUID | The unique GUID assigned to the asset. You can use this to track its references across your project. |
| Asset Size | The size of the source file of the asset. |
| Path | The file path of the asset, relative to the project's root folder. |
| Editor Revision | The version of the Editor that created this artifact. |
| Timestamp | The time at which the Artifact file was created. This matches the timestamp value of the file in the |
| Duration | The time Unity took to import this asset in the most recent import, in milliseconds. |
| Reason for Import | A description of the change (or changes) in your project which caused this asset's most recent import, and details about the associated dependency type. The Reason for Import field has its own search bar, which allows you to search its text. This is useful in situations where an asset has many reasons for import (for example, a compute shader can have many dependencies that are modified when you change platforms). |
| Produced Files / Artifacts | The list of files present in the During typical usage of the Editor, Unity might generate many versions of an asset's import result (an artifact). For this reason, each artifact has an artifact ID for reference. This is different to the asset's GUID. The selected revision is referred to as the current revision, which is selected by default when an asset in the Asset List is selected. |
| Dependencies | A list of Editor and project-specific variables which control the state of an asset, which, if changed, trigger the re-import of the asset. Dependencies are how the Asset Database tracks the state of an asset. This means that if an asset dependency changes, the import result is different and Unity generates a new revision of an artifact. Understanding your asset's dependency types and what can cause them to change can help you get the most out of Unity's Asset Database system, speed up your workflow, and avoid unnecessary import time. This field has its own search bar, which allows you to search the text contained in the Dependencies field. |
Overview panel
Select Show Overview in the toolbar to display an overview of the import data in your project. It contains the following information:
Property | Description |
|---|---|
| Most Dependencies | Displays a list of the assets in your project with the most dependencies, and the number of dependencies each asset has. |
| Longest Import Duration | Displays a list of the assets that took the longest amount of time to import, and their import time in milliseconds. |
| Analyze Import Process | Select this property to get a list of issues with the import processing of assets in your project, and suggestions for ways to suppress or fix the issues. |
For more information, refer to Overview of import data.