# Compare Asset Libraries

#### <a class="anchor" id="bkmrk-"></a>Description

The CGI Studio **Asset Library Verification** license supports the user in managing asset files in larger environments or projects with multiple variants. It provides means for verification of matching asset library / widget / application versions and allows to assign assets libraries to their originating solution.

For more information about this optional feature refer to the [Candera](http://dev.doc.cgistudio.at/APILINK/namespace_candera.html "[DataBinding_RefTypeSample]") Application Development Tutorial <span style="color: rgb(230, 126, 35);">[Asset Library Verification (Optional)](https://doc316en.candera.eu/books/candera/page/asset-library-verification-optional)</span> .

##### <a class="anchor" id="bkmrk--0"></a>Usage

For comparing asset library files, use the following workflow:

<div class="contents" id="bkmrk-obtain-the-two-asset"><div class="contents"><div class="textblock">- Obtain the two assets for comparison (e.g., generate assets from SceneComposer);
- Run `AssetTool -diff `on these two assets, generating an Excel file with diff info; this information contains the versions of the two assets, their name table entries and all the asset lib entries grouped on libraries.

</div></div></div><div class="contents" id="bkmrk-asset-library-verifi"><div class="contents"><div class="textblock"><dl class="note"><dd><p class="callout info">Asset Library Verification license is required for comparing the complete set of asset version information.</p>

</dd></dl></div></div></div>##### Command line options:

Create the diff between left and right asset files and write it as Excel file on outputFilePath:

```
 AssetTool -diff -d leftAssetFilePath rightAssetFilePath outputFilePath 
```

Show help:

```
 AssetTool -diff -h 
```