Minimizing size of Dotnet WebAssembly Browser app

[sps014]

Hello, I have Dotnet WebAssembly Browser app. The size of default dotnet.native.wasm with .Net 8 preview 5 is 2.8 MB.

On other hand In blazor WebAssembly app we can have PublishTrimmed and TrimMode to reduce the size to 300-400 KB. These 2 properties do not have effect on Web Assembly Browser app. Trimming doesn't takes place. Also Is there way to trim timezone and other data.

Is there any way to allow trimming to get smaller dotnet wasm in Web assembly browser application? Is there any roadmap for it similar to blazor size reduction tasks?

Thanks

[ghost]

Tagging subscribers to 'arch-wasm': @lewing
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Issue Details

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Hello, I have Dotnet WebAssembly Browser app. The size of default dotnet.native.wasm with .Net 8 preview 5 is 2.8 MB.

On other hand In blazor WebAssembly app we can have PublishTrimmed and TrimMode to reduce the size to 300-400 KB. These 2 properties do not have effect on Web Assembly Browser app. Trimming doesn't takes place. Also Is there way to trim timezone and other data.

Is there any way to allow trimming to get smaller dotnet wasm in Web assembly browser application? Is there any roadmap for it similar to blazor size reduction tasks?

Thanks

Author:	sps014
Assignees:	-
Labels:	arch-wasm, untriaged, needs-area-label
Milestone:	-

[lewing]

Are you publishing the app? Is PublishTrimmed set to true?

[sps014]

Are you publishing the app? Is PublishTrimmed set to true?

Yes , I used these flags in csproj.
These flags seems to have no effect when publishing.

[maraf]

We are on a journey to unify behavior between Blazor and WebAssembly Browser app. Roadmap for this work is in #70762.

I'll check the PublishTrimmed and TrimMode flags.

Timezone trimming is currently not possible due to change how it's delivered and we are working on enabling it again #87284

[maraf]

Both PublishTrimmed and TrimMode are set by default publishing both the WebAssembly app and Blazor app.

I got the same size for dotnet.native.wasm in both apps on .NET 8 preview 5 (~ 2.6MB).

You can disable globalization with InvariantGlobalization=true (~ 1.3 MB). Finally you can save some KB with EventSourceSupport=false and UseSystemResourceKeys=true. More info at https://learn.microsoft.com/en-us/dotnet/core/deploying/trimming/trimming-options#trimming-framework-library-features

The timezone data has ~ 300KB which is not trimmable at the moment. With brotli compression it should get to ~ 400 KB.

[ghost]

This issue has been marked needs-author-action and may be missing some important information.

[sps014]

@maraf Thanks for this valuable information.

[maraf]

I'm happy to help! I'm going to close this issue, feel free to reopen it or open a new one if you have further questions.