# \#HTML5 **URL:** https://forums.unrealengine.com/tag/html5/41.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Unreal Engine + WebGPU - UE 5.8.3 running in Your Browser! ](https://forums.unrealengine.com/t/unreal-engine-webgpu-ue-5-8-3-running-in-your-browser/2841904)
**Author:** [@pooya.ai](https://forums.unrealengine.com/u/pooya.ai)\ **Replies:** 0\ **Last updated:** [October 17, 2026, 1:50pm UTC](https://forums.unrealengine.com/t/unreal-engine-webgpu-ue-5-8-3-running-in-your-browser/2841904 "2026-10-17T13:50:57Z")
Hi everyone! I’ve been working on UnrealEngine-WebGPU, a fork of Unreal Engine 5.8.3 that brings games to the browser using WebGPU and WebAssembly. The game runs locally on your device, with WebGPU handling renderin… --- ## [Support for HTML5](https://forums.unrealengine.com/t/support-for-html5/2728871)
**Author:** [@preadatordetector](https://forums.unrealengine.com/u/preadatordetector)\ **Replies:** 0\ **Last updated:** [June 15, 2026, 10:38pm UTC](https://forums.unrealengine.com/t/support-for-html5/2728871 "2026-06-15T22:38:44Z")
I would like to make a 3D RPG UE4.x game to post on Newgrounds, Kongregate, the Epic Games Store, GOG, and Itch. The last supported version was UE4.23. I wanted to use UE, and the reason why I made this thread was becaus… --- ## [WebGPU for Unreal Engine 5 - 5.6 and 5.7 support](https://forums.unrealengine.com/t/webgpu-for-unreal-engine-5-5-6-and-5-7-support/2693702)
**Author:** [@WonderInteractiv](https://forums.unrealengine.com/u/WonderInteractiv)\ **Replies:** 0\ **Last updated:** [January 20, 2026, 10:15pm UTC](https://forums.unrealengine.com/t/webgpu-for-unreal-engine-5-5-6-and-5-7-support/2693702 "2026-01-20T22:15:09Z")
My team and I at Wonder Interactive develop tools and a platform for deploying and hosting UE5 projects client-side to the browser. This leverages the new WebGPU API which has recently become widely available in browsers… --- ## [Web Browser Cookies](https://forums.unrealengine.com/t/web-browser-cookies/672397)
**Author:** [@markcham](https://forums.unrealengine.com/u/markcham)\ **Replies:** 1\ **Last updated:** [December 16, 2025, 3:21pm UTC](https://forums.unrealengine.com/t/web-browser-cookies/672397 "2025-12-16T15:21:27Z")
Is it possible to interact with the built-in browser’s cookies? I have a website that currently has persistent login for users, and I want players to not have to log in every time when inside the built-in browser. The br… --- ## [Rise of the Half Moon Google Game - Can Unreal Engine Still Export to HTML5? ](https://forums.unrealengine.com/t/rise-of-the-half-moon-google-game-can-unreal-engine-still-export-to-html5/2475620)
**Author:** [@Barney\_Stephenso](https://forums.unrealengine.com/u/Barney_Stephenso)\ **Replies:** 0\ **Last updated:** [April 25, 2025, 1:13pm UTC](https://forums.unrealengine.com/t/rise-of-the-half-moon-google-game-can-unreal-engine-still-export-to-html5/2475620 "2025-04-25T13:13:42Z")
Google recently surprised users with a beautiful interactive browser game titled “Rise of the Half Moon” as part of their Doodle series. The game features smooth animations, simple controls, and runs entirely within the … --- ## [Mac client can't fully connect to dedicated server with HTML5Networking](https://forums.unrealengine.com/t/mac-client-cant-fully-connect-to-dedicated-server-with-html5networking/473008)
**Author:** [@Adam\_Lang](https://forums.unrealengine.com/u/Adam_Lang)\ **Replies:** 1\ **Last updated:** [February 21, 2025, 4:11pm UTC](https://forums.unrealengine.com/t/mac-client-cant-fully-connect-to-dedicated-server-with-html5networking/473008 "2025-02-21T16:11:58Z")
I am making a new project with 4.23 source and shootergame and deploy with a dedicated server and the windows and HTML5 client are fine. However, the Mac client hits the server but it does fully connect. Using normal ne… --- ## [WebAssembly.Memory object cannot be serialized](https://forums.unrealengine.com/t/webassembly-memory-object-cannot-be-serialized/462384)
**Author:** [@tomiotown](https://forums.unrealengine.com/u/tomiotown)\ **Replies:** 2\ **Last updated:** [February 4, 2025, 3:32pm UTC](https://forums.unrealengine.com/t/webassembly-memory-object-cannot-be-serialized/462384 "2025-02-04T15:32:27Z")
Hi all, I’ve been getting this error: DataCloneError: Worker.postMessage: The WebAssembly.Memory object cannot be serialized. The Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy HTTP headers can be used to … --- ## [No working lighting in HTML5/Mobile](https://forums.unrealengine.com/t/no-working-lighting-in-html5-mobile/315224)
**Author:** [@anonymous\_user\_c2bbafad1](https://forums.unrealengine.com/u/anonymous_user_c2bbafad1)\ **Replies:** 0\ **Last updated:** [April 16, 2015, 8:24am UTC](https://forums.unrealengine.com/t/no-working-lighting-in-html5-mobile/315224 "2015-04-16T08:24:05Z")
Hi all, So, I’ve been working on a HTML5 demo of a project I’ve been doing, however I can’t seem to get any lights to actually show. Currently, I have gone through all the documentation regarding mobile lighting and tr… --- ## [WebGL building support](https://forums.unrealengine.com/t/webgl-building-support/614827)
**Author:** [@alexhalo3115](https://forums.unrealengine.com/u/alexhalo3115)\ **Replies:** 6\ **Last updated:** [January 1, 2025, 4:48am UTC](https://forums.unrealengine.com/t/webgl-building-support/614827 "2025-01-01T04:48:08Z")
So i am wondering if there is a way to package/build an Unreal Engine 5 project to the web, similar to how Unity does. I am aware the capability was taken away after 4.23 (i think) and some of the solutions i could find… --- ## [EMSCRIPTEN hepling for c++ class with unreal engine 4](https://forums.unrealengine.com/t/emscripten-hepling-for-c-class-with-unreal-engine-4/425343)
**Author:** [@aznur](https://forums.unrealengine.com/u/aznur)\ **Replies:** 9\ **Last updated:** [December 9, 2024, 1:05pm UTC](https://forums.unrealengine.com/t/emscripten-hepling-for-c-class-with-unreal-engine-4/425343 "2024-12-09T13:05:12Z")
hi i use unreal engine 4.19 visual studio 2015 version 14.0.25431.01 update 3 i have create a project and export in html5 in aproximatively in 30minute max after i have create a basic c++ class with visual studio … --- ## [How call UFUNCTION (BlueprintImplementableEvent) from JS with EMSCRIPTEN and error: Module.ccall is not function?](https://forums.unrealengine.com/t/how-call-ufunction-blueprintimplementableevent-from-js-with-emscripten-and-error-module-ccall-is-not-function/758421)
**Author:** [@ananasdas181](https://forums.unrealengine.com/u/ananasdas181)\ **Replies:** 3\ **Last updated:** [December 9, 2024, 12:52pm UTC](https://forums.unrealengine.com/t/how-call-ufunction-blueprintimplementableevent-from-js-with-emscripten-and-error-module-ccall-is-not-function/758421 "2024-12-09T12:52:42Z")
I am making a game for HTML5. At a certain moment I call the ad block, before that I put the game on pause. When the player closes the ad block, I need to unpause the game (I use Blueprints). I need to call UFUNCTION (Bl… --- ## [HTML5 Project not picking up mouse?](https://forums.unrealengine.com/t/html5-project-not-picking-up-mouse/470858)
**Author:** [@JJobson98](https://forums.unrealengine.com/u/JJobson98)\ **Replies:** 1\ **Last updated:** [September 5, 2024, 7:09pm UTC](https://forums.unrealengine.com/t/html5-project-not-picking-up-mouse/470858 "2024-09-05T19:09:10Z")
Hi, I’ve been following this tutorial and I have packaged up my game. I’m testing it as local host on chrome, and the keyboard input is fine, but I can’t look around or select any of my UI. Anyone know why it’s not pic… --- ## [How can I run an Unreal Engine project in a web browser?](https://forums.unrealengine.com/t/how-can-i-run-an-unreal-engine-project-in-a-web-browser/469943)
**Author:** [@anonymous\_user\_3c1001ef](https://forums.unrealengine.com/u/anonymous_user_3c1001ef)\ **Replies:** 4\ **Last updated:** [November 11, 2023, 2:04am UTC](https://forums.unrealengine.com/t/how-can-i-run-an-unreal-engine-project-in-a-web-browser/469943 "2023-11-11T02:04:12Z")
Hi all. I’m sorry if this question seems ridiculous, but, I have an Unreal Engine project that I would like to run in a web browser. How would I go about doing this? I see HTML5 support has been dropped. Is this even pos… --- ## [How to set up wide aspect ratio for html5 hosting on Itch.io?](https://forums.unrealengine.com/t/how-to-set-up-wide-aspect-ratio-for-html5-hosting-on-itch-io/1900418)
**Author:** [@brianheagney](https://forums.unrealengine.com/u/brianheagney)\ **Replies:** 0\ **Last updated:** [June 12, 2024, 2:26pm UTC](https://forums.unrealengine.com/t/how-to-set-up-wide-aspect-ratio-for-html5-hosting-on-itch-io/1900418 "2024-06-12T14:26:57Z")
Hi, I want to make a “Google Doodle” styled interactive media “game” to embed into a website, so I’m using Unreal Engine 4.23 for its HTML5 building abilities. I want to use UE because I’m very familiar with blueprinti… --- ## [incremental, decremental ints and clamps mind boggle](https://forums.unrealengine.com/t/incremental-decremental-ints-and-clamps-mind-boggle/1834663)
**Author:** [@Skyboy](https://forums.unrealengine.com/u/Skyboy)\ **Replies:** 3\ **Last updated:** [May 1, 2024, 1:17pm UTC](https://forums.unrealengine.com/t/incremental-decremental-ints-and-clamps-mind-boggle/1834663 "2024-05-01T13:17:27Z")
Hey there, quick one today. I feel a bit silly asking about this, but even with a clamp my incremental and decremental ints are going to -1 and 1 over. How come the clamp doesn’t stop this from happening? Itd make life… --- ## [Parralax Backgrounds.](https://forums.unrealengine.com/t/parralax-backgrounds/1806317)
**Author:** [@Skyboy](https://forums.unrealengine.com/u/Skyboy)\ **Replies:** 0\ **Last updated:** [April 16, 2024, 12:07pm UTC](https://forums.unrealengine.com/t/parralax-backgrounds/1806317 "2024-04-16T12:07:40Z")
Hey there, So I’ve hit a wall with parallax backgrounds, being a kind of side scroller speciality I thought there would be a bombardment of tutorials, but there’s next to none and mostly broken links or super outdated c… --- ## [Html 5 Launching engine loop](https://forums.unrealengine.com/t/html-5-launching-engine-loop/449334)
**Author:** [@kela\_jamun](https://forums.unrealengine.com/u/kela_jamun)\ **Replies:** 2\ **Last updated:** [April 2, 2024, 5:05am UTC](https://forums.unrealengine.com/t/html-5-launching-engine-loop/449334 "2024-04-02T05:05:45Z")
Packaging for html5 is successful, however on localhost its stuck on “launching engine”. Any solutions please ? below are the errors on the chrome console Source map information is not available, emscripten\_log with EM… --- ## [UE4.23 HTML5 build stuck at "Launching Engine..."](https://forums.unrealengine.com/t/ue4-23-html5-build-stuck-at-launching-engine/490698)
**Author:** [@funkyzeit987](https://forums.unrealengine.com/u/funkyzeit987)\ **Replies:** 1\ **Last updated:** [April 2, 2024, 5:03am UTC](https://forums.unrealengine.com/t/ue4-23-html5-build-stuck-at-launching-engine/490698 "2024-04-02T05:03:47Z")
Hi, I am having issues with my HTML5 project, after I build it and try it via localhost (tried both on Firefox and Chrome) it downloads everything, compiles WebAssembly but is stuck forever at “Launching Engine…” part. … --- ## [How do i hide the Hardware cursor in an HTML5 Window?](https://forums.unrealengine.com/t/how-do-i-hide-the-hardware-cursor-in-an-html5-window/1732837)
**Author:** [@MementoMori\_0801](https://forums.unrealengine.com/u/MementoMori_0801)\ **Replies:** 1\ **Last updated:** [March 19, 2024, 4:49pm UTC](https://forums.unrealengine.com/t/how-do-i-hide-the-hardware-cursor-in-an-html5-window/1732837 "2024-03-19T16:49:35Z")
Hey, as the title says, my problem is, that the mouse is shown above my hardware cursor widget and i do not know why or how to fix this so thank you for your time and answers in advance :) PS the software cursor is lock… --- ## [How do i create HTML5 UIs to use in UE5?](https://forums.unrealengine.com/t/how-do-i-create-html5-uis-to-use-in-ue5/1668110)
**Author:** [@CrytoxXD](https://forums.unrealengine.com/u/CrytoxXD)\ **Replies:** 0\ **Last updated:** [February 5, 2024, 4:28pm UTC](https://forums.unrealengine.com/t/how-do-i-create-html5-uis-to-use-in-ue5/1668110 "2024-02-05T16:28:15Z")
Heyja folks! First of: Apoligize any spelling or grammar mistakes, english is not my first language. I have the following “issue”: I’m currently learning UE5. Besides other things I still don’t quite get I have this i… --- ## [HTML5 Socket Connection Failure](https://forums.unrealengine.com/t/html5-socket-connection-failure/483333)
**Author:** [@robbythedude](https://forums.unrealengine.com/u/robbythedude)\ **Replies:** 1\ **Last updated:** [January 25, 2024, 12:57pm UTC](https://forums.unrealengine.com/t/html5-socket-connection-failure/483333 "2024-01-25T12:57:55Z")
Preface I know that HTML5 has been deprecated and I am using the community HTML5 branch found here: GitHub - UnrealEngineHTML5/Documentation. I compiled the Engine from that source. Due to this being an HTML5 multiplay… --- ## [Web Portage To Unreal and Procedural Generation Questions](https://forums.unrealengine.com/t/web-portage-to-unreal-and-procedural-generation-questions/1580125)
**Author:** [@Tactikast](https://forums.unrealengine.com/u/Tactikast)\ **Replies:** 5\ **Last updated:** [January 17, 2024, 3:08pm UTC](https://forums.unrealengine.com/t/web-portage-to-unreal-and-procedural-generation-questions/1580125 "2024-01-17T15:08:19Z")
Hello, I’m working on a PC Turn By Turn (TBT) project and it was planned to be first (at least to start) only for browser. But I’m such a Server Side Maniac (for security reason too) that near everything is happening i… --- ## [Ugly shadows in HTML5 build](https://forums.unrealengine.com/t/ugly-shadows-in-html5-build/1436298)
**Author:** [@Mikeymore](https://forums.unrealengine.com/u/Mikeymore)\ **Replies:** 2\ **Last updated:** [November 30, 2023, 3:51pm UTC](https://forums.unrealengine.com/t/ugly-shadows-in-html5-build/1436298 "2023-11-30T15:51:37Z")
Hi all, I have build a project in HTML5 with UE 4.23 In the viewport with preview shader Model 5 I get good results, but in the HTML viewport (and also in the build) I get blubby shadows. I played a lot with all the lin… --- ## [Game lost focus in Html window when opening widget](https://forums.unrealengine.com/t/game-lost-focus-in-html-window-when-opening-widget/1400493)
**Author:** [@Mikeymore](https://forums.unrealengine.com/u/Mikeymore)\ **Replies:** 1\ **Last updated:** [November 20, 2023, 10:50pm UTC](https://forums.unrealengine.com/t/game-lost-focus-in-html-window-when-opening-widget/1400493 "2023-11-20T22:50:22Z")
Hi all, I am right now working in UE 4.23 to package html-5. So far so good, but the only problem is the out of focus of the game when opening a widget. So I can move the cursor out of the browser screen and have to clic… --- ## [HTML5 very challenging, textures and mouse focus](https://forums.unrealengine.com/t/html5-very-challenging-textures-and-mouse-focus/569434)
**Author:** [@sebalv70](https://forums.unrealengine.com/u/sebalv70)\ **Replies:** 1\ **Last updated:** [November 19, 2023, 2:11pm UTC](https://forums.unrealengine.com/t/html5-very-challenging-textures-and-mouse-focus/569434 "2023-11-19T14:11:34Z")
I’m extremely grateful to all the people in this forum who have helped me learn Unreal Engine for the past two months. It’s only me and two other guys working on this and we didn’t know anything about it before two month… --- ## [HTML5 support](https://forums.unrealengine.com/t/html5-support/1362189)
**Author:** [@Mikeymore](https://forums.unrealengine.com/u/Mikeymore)\ **Replies:** 0\ **Last updated:** [November 4, 2023, 10:20am UTC](https://forums.unrealengine.com/t/html5-support/1362189 "2023-11-04T10:20:49Z")
Hi all, I know the HTML-5 webgl packaging option is out of Unreal after 4.24 I have searched a lot for alternatives and pixelstreaming is not the right option for me and my customers. Is there any information available… --- ## [Running with IndexedDB access disabled at HTML5](https://forums.unrealengine.com/t/running-with-indexeddb-access-disabled-at-html5/422865)
**Author:** [@anonymous\_user\_dfa75088](https://forums.unrealengine.com/u/anonymous_user_dfa75088)\ **Replies:** 15\ **Last updated:** [September 5, 2023, 9:12am UTC](https://forums.unrealengine.com/t/running-with-indexeddb-access-disabled-at-html5/422865 "2023-09-05T09:12:04Z")
Hi, I ran my project on the Chrome using HTML5 compile function. And I saw “Running with IndexedDB access disabled.” message below of canvas. Also, I could get more message from console. Failed to openIndexedDB, proce… --- ## [HTML5 touch input and keyboard ue4.27](https://forums.unrealengine.com/t/html5-touch-input-and-keyboard-ue4-27/1272902)
**Author:** [@carter7562](https://forums.unrealengine.com/u/carter7562)\ **Replies:** 0\ **Last updated:** [August 26, 2023, 3:17am UTC](https://forums.unrealengine.com/t/html5-touch-input-and-keyboard-ue4-27/1272902 "2023-08-26T03:17:57Z")
I have HTML running with ue4.27 on a Firebase web server and it works perfectly with keyboard it’s a flappy bird clone so the only controls are the up key and space both to jump but I’m trying to add touch as an input fo… --- ## [i am trying to get html5 to package for ue4.27 but im getting an error related to hololens](https://forums.unrealengine.com/t/i-am-trying-to-get-html5-to-package-for-ue4-27-but-im-getting-an-error-related-to-hololens/1261237)
**Author:** [@carter7562](https://forums.unrealengine.com/u/carter7562)\ **Replies:** 1\ **Last updated:** [August 16, 2023, 3:04pm UTC](https://forums.unrealengine.com/t/i-am-trying-to-get-html5-to-package-for-ue4-27-but-im-getting-an-error-related-to-hololens/1261237 "2023-08-16T15:04:19Z")
1\>------ Build started: Project: HoloLens.Automation, Configuration: Development Any CPU ------ 1\>C:\\Documents\\ue-4.27-html5-es3\\Engine\\Source\\Programs\\AutomationTool\\HoloLens\\HoloLensPlatform.Automation.cs(17,15,17,25)… --- ## [Need help with project packaging to web](https://forums.unrealengine.com/t/need-help-with-project-packaging-to-web/486479)
**Author:** [@samerinteriors](https://forums.unrealengine.com/u/samerinteriors)\ **Replies:** 1\ **Last updated:** [July 27, 2023, 7:11am UTC](https://forums.unrealengine.com/t/need-help-with-project-packaging-to-web/486479 "2023-07-27T07:11:07Z")
Hi Guys please i need your help i just finish my virtual art gallery in unreal engine , and stuck in finding the best way for publishing my game/project on website , i have tried the following methods but not efficie… [Next page](https://forums.unrealengine.com/tag/html5/41.md?match_all_tags=true&page=1&tags%5B%5D=HTML5)