# Is Web Assembly supported?

**URL:** <https://forum.webostv.developer.lge.com/t/is-web-assembly-supported/3026>\
**Category:** Web App Development\
**Created:** [May 25, 2023, 3:37pm UTC](https://forum.webostv.developer.lge.com/t/is-web-assembly-supported/3026 "2023-05-25T15:37:13Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![lazzardo](https://avatars.discourse-cdn.com/v4/letter/l/e56c9b/32.png) [@lazzardo](https://forum.webostv.developer.lge.com/u/lazzardo)\
**Post date:** [May 25, 2023, 3:37pm UTC](https://forum.webostv.developer.lge.com/t/is-web-assembly-supported/3026/1 "2023-05-25T15:37:13Z")

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Hello,

Today I tried to see if Web Assembly is supported. Testing the application with the webOS 6.0 simulator it seems it works correctly (I simply tested a call to a function which returned a string).  
However it seems it doesn’t work on the TV. The OS version reported by the television is 5.4.3-34.  
Does anyone knows the current status of support for WASM in webOS applications?

Thank you

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**Author:** ![lazzardo](https://avatars.discourse-cdn.com/v4/letter/l/e56c9b/32.png) [@lazzardo](https://forum.webostv.developer.lge.com/u/lazzardo)\
**Post date:** [May 26, 2023, 9:37am UTC](https://forum.webostv.developer.lge.com/t/is-web-assembly-supported/3026/2 "2023-05-26T09:37:57Z")

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I guess I kind of figured out what’s happening about WASM.

Looking at the [engines table](https://webostv.developer.lge.com/develop/specifications/web-api-and-web-engine) It says 5.x is based on chromium 68, which supports WASM.

I think the issue here is the different protocol used by the simulator, which probably instantiate a simple http server, while the television does not use any webserver.

I concluded for this option because in the same engines table page there is a paragraph related to cookies in which it says they only work in hosted apps.

I’ll make some test to verify WASM behaviour for an hosted app.

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**Author:** ![user1608](https://avatars.discourse-cdn.com/v4/letter/u/f19dbf/32.png) [@user1608](https://forum.webostv.developer.lge.com/u/user1608)\
**Post date:** [May 12, 2025, 12:24am UTC](https://forum.webostv.developer.lge.com/t/is-web-assembly-supported/3026/3 "2025-05-12T00:24:05Z")

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Hi @lazzardo ! Do you have additional insights on this? Also looking into bringing a WASM-based app to webos on TV.