Validate and upload assets to your package

You can add assets to any package draft on the Publisher Portal or from the Unity Editor. To upload assets, use the Asset Store Publishing Tools package.

Note: To organize your package’s assets in an effective way, move all the assets to a top-level folder that has the same name as your package.

Install the Asset Store Publishing Tools package

Use the Asset StoreA growing library of free and commercial assets created by Unity and members of the community. Offers a wide variety of assets, from textures, models and animations to whole project examples, tutorials and Editor extensions. More info
See in Glossary Publishing Tools package to validate, upload, and preview your assets. To add it to your project:

1. Go to the Asset Store Publishing Tools.
2. Select Open in Unity.
3. In the Unity Editor go to Window > Package Management > Package Manager.
4. Select My Assets.
5. Search for and select the Asset Store Publishing Tools package.
6. Select Download.
7. Select Import [Version number] to project.
8. In the Import Unity Package window that appears, select Import.

Validate assets

The Asset Store Publishing Tools validator checks your assets to make sure they follow the Submission Guidelines. Use it to identify errors that you can fix before you submit a package for approval.

To validate your assets:

1. Open the Unity Project that contains the content you want to submit to the Asset Store.
2. In the Main Menu, select Tools > Asset Store > Validator.
3. In the Asset Store Validator window select Add a path.
4. Select the folder that contains the assets you want to submit to the Asset Store.
5. Select Validate.
6. If any warnings or errors appear select them to learn more about how to fix each one.

Note: If your package contains audio or video files you must upload samples of your media assets in the Media section of your package draft.

Upload assets to the Publisher Portal

Use the Asset Store Uploader to create and upload a .unitypackage file that includes your assets to the Publisher Portal. To do this:

1. In the Main Menu, select Tools > Asset Store > Uploader.
2. Enter your Unity ID login details.
3. Select the package draft to add these assets to.
4. Select Export and Upload.
5. Open the Publisher Portal and select the package draft you uploaded the assets to.
6. Go to the Package upload section. If your package doesn’t appear, select Refresh Package.

Additional resources

• Submit a package for approval
• Check the status of an Asset Store package
• The Asset Store publishing workflow
• Asset Store packagesA bundled collection of assets or tools available for purchase or download on the Unity Asset Store, compressed and stored as an asset package (.unitypackage extension) or a UPM package. You can manage your packages from the Asset Store either on the online store or through the Package Manager window. More info
  See in Glossary
• Asset Store Submission Guidelines
• Asset Store Provider Agreement