Unity Preview Server is a Unity editor extension for previewing WebGL application locally.

This extension allows you to run your WebGL application on a fixed port without building it every time.

• 2021.3 or later

1. Open Package Manager window in your Unity Editor (Main Menu > Window > Package Manager).
2. Click + and select Add package from git URL....
3. Add https://github.com/frozenbonito/UnityPreviewServer.git?path=Packages/jp.frozenbonito.preview-server.

You can specify a version with a URL suffix like v1.0.0. For example, https://github.com/frozenbonito/UnityPreviewServer.git?path=Packages/jp.frozenbonito.preview-server#v1.0.0.

See the OpenUPM package documentation.

After installing this extension, Preview Server item will be added to the main menu.

Main Menu > Preview Server > Start

Main Menu > Preview Server > Stop

The server will automatically stop when the editor is closed or the assembly is reloaded.

Main Menu > Preview Server > Open Window...

You can edit the user settings, start and stop the server, and view the logs in the window.

Main Menu > Edit > Preferences... > Preview Server

The port number to use for the preview server. This will be used as the default value for all projects.

Default: 5000

Main Menu > Edit > Project Settings... > Preview Server

The build location for WebGL; the contents in it will be served by the preview server. This will be used as the default location for the project. Only folders with in a project can be set.

Default: Build

Main Menu > Preview Server > Open Window...

User settings are user-specific and project-specific settings.

If this item is checked, the server will serve the contents in the default build location. Otherwise, the build location in the user settings will be used.

Default: true

The build location for WebGL; the contents in it will be served by the preview server. If Use Default Location is checked, this is ignored.

Default: The current location for the WebGL build, or ${PROJECT_PATH}/Build

If this item is checked, the server will use the default port. Otherwise, the port in the user settings will be used.

Default: true

The port number to use for the preview server. If Use Default Port is checked, this is ignored.

Default: 5000

unisrv - A preview server for Unity WebGL application.