Web template build configuration and interaction
Server configuration code samples
Deploy a Web applicationTo deploy a Web build, you must configure your server and make sure youâre using the correct response headers, so that the browser receives a proper response and processes it correctly.
There are two main settings in Unity that affect how you set up the server:
Choose the compression type from the Web Player Settings window (menu: Edit > Project Settings > Player, then select Web and expand the Publishing Settings section):
Image of Web Publishing window Compression method Description gzip This is the default option. Gzip files are bigger than Brotli files, but faster to build, and natively supported by all browsers over both HTTP and HTTPS. Brotli Brotli compression offers the best compression ratios. Brotli compressed files are smaller than gzip, but take a longer time to compress, which increases your iteration times on release builds. Chrome and Firefox only natively support Brotli compression over HTTPS. Disabled Disables compression. Use this option if you want to implement your own compression in post-processingA process that improves product visuals by applying filters and effects before the image appears on screen. You can use post-processing effects to simulate physical camera and film properties, for example Bloom and Depth of Field. More info post processing, postprocessing, postprocessFor more information on browser support for selected compression methods, refer to the documentation on Web browser compatibility.
Note: The Compression Format setting applies only to release builds. Development buildsA development build includes debug symbols and enables the Profiler. More info
See in Glossary arenât compressed.
You might need to adjust your server configuration to match your specific build setup. In particular, there might be issues if you already have another server-side configuration to compress hosted files, which could interfere with this setup. To make the browser perform decompression natively while it downloads your application, append a Content-Encoding header to the server response. This header must correspond to the type of compression Unity uses at build time. For code samples, refer to Server Configuration Code Samples.
Decompression fallbackThe decompression fallback option enables Unity to automatically embed a JavaScript decompressor into your build. This decompressor corresponds to your selected compression method, and decompresses your content if the browser fails to do so.
Enable decompression fallbackEnable decompression fallback from the Player Settings window (menu: Edit > Project Settings > Player, then select Web and expand the Publishing Settings section).
When you enable decompression fallback, Unity adds a .unityweb extension to the build files. You should consider using Decompression Fallback if you have less experience with server configuration, or if server configuration is unavailable to you.
Note: Enabling decompression fallback results in a large loader size and a less efficient loading scheme for the build files.
Disable decompression fallbackThe Decompression Fallback option is disabled by default. Therefore, by default, build files include an extension that corresponds to the compression method you select.
There are two compression methods to choose from: gzip or Brotli. For further information refer to the compression format section.
To enable browsers to natively decompress Unity build files while theyâre downloading, you need to configure your web server to serve the compressed files with the appropriate HTTP headers. This is called native browser decompression. Itâs faster than the JavaScript decompression fallback, which can reduce your applicationâs startup time.
The setup process for native browser decompression depends on your web server. For code samples, see Server Configuration Code Samples.
Content-Encoding headersA Content-Encoding header tells the browser which type of compression Unity has used for the compressed files. This allows the browser to decompress the files natively.
Set the Content-Encoding response header to the compression method selected in the Player SettingsSettings that let you set various player-specific options for the final game built by Unity. More info
See in Glossary.
Content-Encoding: gzip Brotli .br Content-Encoding: br WebAssembly streaming (higher level header)
WebAssembly streaming allows the browser to compile the WebAssembly code while itâs still downloading the code. This significantly improves loading times.
For WebAssembly streaming compilation to work, the server needs to return WebAssembly files with an application/wasm MIME type. To use WebAssembly streaming, you need to serve WebAssembly files with the Content-Type: application/wasm response header. A Content-Type header tells the server which media type the content is. This value should be set to application/wasm for WebAssembly files.
Content-Type: application/wasm
Note: WebAssembly streaming doesnât work together with JavaScript decompression when the Decompression Fallback option is enabled. The downloaded WebAssembly file must first go through the JavaScript decompressor because the browser canât stream it during download.
Additional headersIf your file contains JavaScript, you should add the application/javascript Content-Type header. Some servers might include this automatically, while others donât.
Content-Type: application/javascript
Web template build configuration and interaction
Server configuration code samples
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