Version: 2022.2
Advanced overview
Texture Compression in WebGL

WebGL Player 设置

This page details the Player settings specific to the WebGL platform. For a description of the general Player settings, see Player settings.

WebGL Player 设置
WebGL Player 设置


Note: Although the Icon panel appears on the WebGL Player settings, there are no icon settings because WebGL games don’t use icons.

For more information about WebGL Publishing Settings, see WebGL Building and Running.

Resolution and Presentation


Resolution section for the WebGL Player platform
Resolution section for the WebGL Player platform


设置 功能
Default Canvas Width 设置 WebGL 画布元素的宽度。
Default Canvas Height 设置 WebGL 画布元素的高度。
Run In Background 启用此选项将允许您的内容将在画布或浏览器窗口失去焦点时继续运行。

WebGL Template

选择要用于 WebGL 项目的模板:

  • Default 页面是一个简单的白色页面,其中的灰色画布上有一个加载进度条。
  • Minimal 页面只有必要的样板代码来运行 WebGL 内容。
  • The PWA page has a Progressive Web App including a web manifest file and service worker code.

您可以指定自己的模板,以便在与之前完成的游戏类似的环境中运行游戏。遵循使用 WebGL 模板中的说明。

Splash Image

Use the Virtual Reality Splash Image setting to select a custom splash image for XR displays. For information on common Splash Screen settings, see Splash Screen.

Splash screen settings for virtual reality.
Splash screen settings for virtual reality.

Other Settings



使用这些设置可自定义 Unity 针对 WebGL 平台渲染游戏的方式。

WebGL 平台的 Rendering Player 设置
WebGL 平台的 Rendering Player 设置
设置 功能
Color Space Choose what color space to use for rendering: Gamma or Linear.
See Linear rendering overview for an explanation of the difference between the two.
Auto Graphics API Disable this option to manually pick and reorder the graphics APIs. By default this option is enabled, and Unity includes WebGL2.0, with WebGL1.0 as a fallback for devices where WebGL2.0 isn’t supported.
Static Batching 启用此选项可使用静态批处理。
Dynamic Batching 选中此复选框可在构建中使用动态批处理(默认情况下启用)。
Graphics Jobs Enable this option to instruct Unity to offload graphics tasks (render loops) to worker threads running on other CPU cores. Use it to reduce the time spent in Camera.Render on the main thread, which is often a bottleneck.
Note: This feature is experimental. It may not deliver a performance improvement for your project, and may introduce new crashes.
Texture compression format Choose DXT, ETC2, or ASTC to set the texture compression format for WebGL. For information on how to pick the right format, see Texture compression format overview and to learn how to create builds for desktop and mobile browsers from a script, see Texture Compression in WebGL.
Lightmap Encoding 选择 Low QualityNormal QualityHigh Quality 来设置光照贴图编码。此设置影响光照贴图的编码方案和压缩格式。
HDR Cubemap Encoding Choose Low Quality, Normal Quality, or High Quality to set the HDR Cubemap encoding. This setting affects the encoding scheme and compression format of the HDR Cubemaps.
Lightmap Streaming Enabled Whether to use Mipmap Streaming for lightmaps. Unity applies this setting to all lightmaps when it generates them.
Note: To use this setting, you must enable the Texture Streaming Quality setting.
Streaming Priority Set the priority for all lightmaps in the Mipmap Streaming system. Unity applies this setting to all lightmaps when it generates them.
Positive numbers give higher priority. Valid values range from —128 to 127.
Frame Timing Stats 启用此选项可收集 CPU/GPU 帧时序统计信息。
Virtual Texturing Indicates whether to enable Virtual Texturing.
Note: The Unity Editor requires a restart for this setting to take effect.
Shader precision model Controls the default precision of samplers used in shaders. See Shader data types and precision for more details.
360 Stereo Capture Indicates whether Unity can capture stereoscopic 360 images and videos. When enabled, Unity compiles additional shader variants to support 360 capture (currently only on Windows/OSX). When enabled, enable_360_capture keyword is added during the Stereo RenderCubemap call. Note that this keyword is not triggered outside the Stereo RenderCubemap function. For more information, see Stereo 360 Image and Video Capture.
Load/Store Action Debug Mode Highlights undefined pixels that might cause rendering problems in your built application. The highlighting appears only in the Game view, and your built application if you select Development Build in Build Settings. See LoadStoreActionDebugModeSettings.
Editor Only Highlights undefined pixels in the Game view, but not in your built application.


WebGL 平台的 Configuration 设置
WebGL 平台的 Configuration 设置
Property Description
Scripting Backend Choose the scripting backend you want to use. The scripting backend determines how Unity compiles and executes C# code in your Project.
Mono Compiles C# code into .NET Common Intermediate Language (CIL) and executes that CIL using a Common Language Runtime. For more information, refer to the Mono page.
IL2CPP Compiles C# code into CIL, converts the CIL to C++ and then compiles that C++ into native machine code, which executes directly at runtime. Refer to IL2CPP for more information.
API Compatibility Level Choose which .NET APIs you can use in your project. This setting can affect compatibility with third-party libraries. However, it has no effect on Editor-specific code (code in an Editor directory, or within an Editor-specific Assembly Definition).

Tip: If you are having problems with a third-party assembly, you can try the suggestion in the API Compatibility Level section below.
.Net Standard 2.1 Compatible with .NET Standard 2.1. Produces smaller builds and has full cross-platform support.
.Net Framework Compatible with the .NET Framework 4 (which includes everything in the .NET Standard 2.0 profile plus additional APIs). Choose this option when using libraries that access APIs not included in .NET Standard 2.0. Produces larger builds and any additional APIs available aren’t necessarily supported on all platforms. Refer to Referencing additional class library assemblies for more information.
IL2CPP Code Generation Defines how Unity manages IL2CPP code generation. This option is only available if you use the IL2CPP scripting backend.
Faster runtime Generates code optimized for runtime performance. This setting is activated by default.
Faster (smaller) builds Generates code optimized for build size and iteration. This setting generates less code and produces a smaller build, but can reduce runtime performance for generic code. Use this option when faster build times are important, such as when iterating on changes.
C++ Compiler Configuration Choose the C++ compiler configuration used when compiling IL2CPP generated code.
Note: This property is disabled unless Scripting Backend is set to IL2CPP.
Use incremental GC Uses the incremental garbage collector, which spreads garbage collection over several frames to reduce garbage collection-related spikes in frame duration. For more information, refer to Automatic Memory Management.
Allow downloads over HTTP Indicates whether to allow downloading content over HTTP. The options are Not allowed, Allowed in Development builds only, and Always allowed. The default option is Not allowed due to the recommended protocol being HTTPS, which is more secure.
Active Input Handling Choose how to handle input from users.
Input Manager (old) Use the default Input window.
Input System Package (New) Use the newer Input system. To try the new Input System, install the InputSystem package.
Both Use both systems side by side.

Shader Variant Loading

Use these settings to control how much memory shaders use at runtime.

设置 描述
Default chunk size (MB) Sets the maximum size of compressed shader variant data chunks Unity stores in your built application for all platforms. The default is 16. Refer to Shader loading for more information.
Default chunk count Sets the default limit on how many decompressed chunks Unity keeps in memory on all platforms. The default is 0, which means there’s no limit.
Override Enables overriding Default chunk size and Default chunk count for this build target.
Chunk size (MB) Overrides the value of Default chunk size (MB) on this build target.
Chunk count Overrides the value of Default chunk count on this build target.

API Compatibility Level

You can choose your mono API compatibility level for all targets. Sometimes a 3rd-party .NET library uses functionality that’s outside of your .NET compatibility level. To understand what’s going on in such cases, and how to best fix it, try following these suggestions:

  1. Install ILSpy for Windows.
  2. Drag the .NET assemblies for the API compatilibity level that you are having issues with into ILSpy. You can find the problematic files under Frameworks/Mono/lib/mono/YOURSUBSET/.
  3. 拖入第三方程序集。
  4. 右键单击第三方程序集并选择 Analyze
  5. In the analysis report, inspect the Depends on section. The report highlights anything that the 3rd-party assembly depends on, but that’s not available in the .NET compatibility level of your choice in red.

Script Compilation

WebGL 平台的脚本编译设置
WebGL 平台的脚本编译设置
设置 功能
Scripting Define Symbols Set custom compilation flags. For more details, see the documentation on Platform dependent compilation.
Additional Compiler Arguments Add entries to this list to pass additional arguments to the Roslyn compiler. Use one new entry for each additional argument.
To create a new entry, press the ‘+’ button. To remove an entry, press the ‘-’ button.
When you have added all desired arguments, click the Apply button to include your additional arguments in future compilations. The Revert button resets this list to the most recent applied state.
Suppress Common Warnings Disable this setting to display the C# warnings CS0169 and CS0649.
Allow ‘unsafe’ Code 允许在预定义的程序集(例如,Assembly-CSharp.dll)中编译“不安全”的 C# 代码
对于程序集定义文件 (.asmdef),请单击其中一个 .asmdef 文件,并在出现的 Inspector 窗口中启用该选项。
Use Deterministic Compilation Disable this setting to prevent compilation with the -deterministic C# flag. With this setting enabled, compiled assemblies are byte-for-byte identical each time they’re compiled.
For more information, see Microsoft’s deterministic compiler option documentation.
Enable Roslyn Analyzers Disable this setting to compile user-written scripts without Roslyn analyzer DLLs that might be present in your project.


WebGL 平台的 Optimization 设置
WebGL 平台的 Optimization 设置
Property Description
Prebake Collision Meshes Adds collision data to Meshes at build time.
Keep Loaded Shaders Alive Indicates whether to prevent shaders from being unloaded.

For more information, see Shader Loading.
Preloaded Assets Sets an array of Assets for the player to load on startup.
To add new Assets, increase the value of the Size property and then set a reference to the Asset to load in the new Element box that appears.
AOT compilation options Additional options for Ahead of Time (AOT) compilation. This helps optimize the size of the built iOS player.
Strip Engine Code Enable this option if you want the Unity Linker tool to remove code for Unity Engine features that your Project doesn’t use. This setting is only available with the IL2CPP scripting backend.

Most apps don’t use every available DLL. This option strips out DLLs that your app doesn’t use to reduce the size of the built Player. If your app is using one or more classes that would normally be stripped out under your current settings, Unity displays a debug message when you try to build the app.
Managed Stripping Level Chooses how aggressively Unity strips unused managed (C#) code. The options are Minimal, Low, Medium, and High.
When Unity builds your app, the Unity Linker process can strip unused code from the managed DLLs your Project uses. Stripping code can make the resulting executable significantly smaller, but can sometimes accidentally remove code that’s in use.

For more information about these options and bytecode stripping with IL2CPP, refer to ManagedStrippingLevel.
Vertex Compression Sets vertex compression per channel. This affects all the meshes in your project.
Typically, Vertex Compression is used to reduce the size of mesh data in memory, reduce file size, and improve GPU performance.

For more information on how to configure vertex compression and limitations of this setting, refe to Compressing mesh data.
Optimize Mesh Data Enable this option to strip unused vertex attributes from the mesh used in a build. This option reduces the amount of data in the mesh, which can help reduce build size, loading times, and runtime memory usage.

Warning: If you have this setting enabled, you should remember to not change material or shader settings at runtime.

Refer to PlayerSettings.stripUnusedMeshComponents for more information.
Texture MipMap Stripping Enables mipmap stripping for all platforms. This strips unused mipmaps from Textures at build time. Unity determines unused mipmaps by comparing the value of the mipmap against the Quality Settings for the current platform. If a mipmap value is excluded from every Quality Setting for the current platform, then Unity strips those mipmaps from the build at build time. If QualitySettings.masterTextureLimit is set to a mipmap value that has been stripped, Unity will set the value to the closest mipmap value that has not been stripped.

Stack Trace

Select the logging settings for the WebGL platform.

WebGL 平台的 Logging 设置
WebGL 平台的 Logging 设置
  • Select your preferred stack trace method by enabling the option that corresponds to each Log Type (Error, Assert, Warning, Log, and Exception) based on the type of logging you require. For example:
    • ScriptOnly: Logs only when running scripts.
    • Full: Logs all the time.
    • None: No logs are ever recorded.

See stack trace logging for more information.


Enable the Clamp BlendShapes (Deprecated) option to clamp the range of blend shape weights in Skinned Mesh Renderers.

WebGL 平台的 Legacy 设置
WebGL 平台的 Legacy 设置

Publishing settings

Use the Publishing Settings to configure how Unity builds your WebGL app. For example, you can choose to enable the browser cache to store its files in your build.

WebGL 平台的 Publishing settings
WebGL 平台的 Publishing settings
设置 功能
Enable Exceptions 选择在运行时如何处理意外的代码行为(通常视为错误)。选项包括:_NoneExplicitly Thrown Exceptions OnlyFull Without Stacktrace_ 和 Full With Stacktrace。有关详细信息,请参阅构建和运行 WebGL 项目页面。
Compression Format Choose the compression format to use for release build files. The options are: Gzip, Brotli, or Disabled (none). Note that this option doesn’t affect development builds.
Name Files As Hashes 启用此选项可使用未压缩文件内容的 MD5 哈希作为构建中每个文件的文件名。
Data caching 启用此选项可自动将内容资源数据缓存在用户计算机上,这样就不必在后续运行中重新下载(除非内容已更改)。
缓存是使用浏览器提供的 IndexedDB API 实现的。有些浏览器可能会对此实施限制,例如要求用户进行授权才能缓存超过特定大小的数据。
Debug Symbols Enable this option to preserve debug symbols and perform demangling (displaying the original function names) of the stack trace when an error occurs. For release builds, all the debug information is stored in a separate file which is downloaded from the server on demand when an error occurs. Development builds always have demangling support embedded in the main module and therefore aren’t affected by this option.
Show Diagnostics Overlay Enable this option to display an overlay in WebGL builds that displays diagnostics information. It’s available for both Development and Release builds. For more information, see Show Diagnostics Overlay Player settings.
Decompression Fallback Include decompression fallback code for build files in the loader. Use this option if you are unable to configure server response headers according to the selected compression method.
Initial Memory Size The initial size of the WASM heap memory in megabytes (MB). By default, this is set to 32 MB. If Memory Growth Mode is set to None, then this is also the maximum size of WASM heap memory.
Memory Growth Mode Choose the growth mode for the WASM heap memory from the following options. The recommended option is Geometric.
None The WASM heap memory has a fixed size configured in Initial Memory Size.
Linear The WASM heap memory increases by a fixed amount configured by Linear Memory Growth Step.
Geometric The WASM heap memory increases relative to the current heap size depending on the factor configured in Geometric Memory Growth Step and Geometric Memory Growth Cap.
Maximum Memory Size The maximum size of the WASM heap memory in MB. By default, this is set to 2048 MB. This option is only available for the Memory Growth Mode Linear or Geometric.
Linear Memory Growth Step Advanced tuning option to control the WASM heap growth step in MB. By default, this is set to 16 MB. A growth step of 16MB indicates that the heap is increased by 16MB each time it needs to grow. Only available if Memory Growth Mode is set to Linear.
Geometric Memory Growth Step Advanced tuning option to control the WASM heap growth factor relative to the current heap size. By default, this is set to 0.2. A growth factor of 0.2 means that the size of the heap is increased by 0.2 * currentHeapSize each time the heap needs to grow. Only available if Memory Growth Mode is set to Geometric.
Geometric Memory Growth Cap Advanced tuning option to control the upper limit for a heap growth step in MB. By default, this is set to 96 MB. A growth cap of 96MB means that the size of the heap is increased by at most 96 MB. Only available if Memory Growth Mode is set to Geometric.

Show Diagnostic Overlay setting

To help optimize WebGL builds and diagnose potential problems, you can view diagnostics information (currently limited to memory usage) by enabling this setting. Once enabled, an icon appears on the build that displays an overlay with useful data about the build. It’s available for both Development and Release builds.

  1. To view the diagnostics information, enable the Show Diagnostics Overlay option in the Player settings window (File > Build Settings > Player Settings > Publishing Settings).

    On desktop, the Diagnostics icon appears on the footer of the WebGL canvas:

    Diagnostics button on the footer of the canvas
    Diagnostics button on the footer of the canvas

    On a mobile device, the Diagnostics icon appears on the bottom-right of the screen:

    An Android phone displaying the diagnostics button
    An Android phone displaying the diagnostics button
  2. Click the Diagnostics icon. An overlay appears showing the JavaScript memory, which is further broken down to display WASM heap memory usage:

The Diagnostics overlay shows the Javascript memory distribution and the WASM heap memory usage
The Diagnostics overlay shows the Javascript memory distribution and the WASM heap memory usage

The following diagnostics appear on the overlay screen:

属性: 功能:
Total JS (JavaScript) Memory The current size of the JS heap, including unused memory not allocated to any JS objects, in megabytes.
Used JS Memory Memory in use by JS objects, in megabytes.
Total WASM heap memory MLinear memory representing the entire heap of the C/C++ Unity engine that’s compiled with Emscripten, including unallocated memory, in megabytes.
Used WASM heapy The space of the WASM heap that’s allocated, in megabytes.

Important note about JS Memory

The JS Memory information is obtained using the performance.memory API, which is currently only supported on Chrome or Edge. There are no other APIs available that return this information for Safari or Firefox.

Note: This API isn’t supported on iOS devices.

On browsers where this API isn’t supported, a message showing N/A appears.

A N/A message appears on browsers that dont support performance.memory API
A N/A message appears on browsers that don’t support performance.memory API

Additional resources:

  • WASM memory options were added in Unity 2022.1.
  • Show Diagnostics Overlay added in Unity 2022.2.


Advanced overview
Texture Compression in WebGL