> For the complete documentation index, see [llms.txt](https://docs.coherence.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.coherence.io/2.3/support/webgl.md).

# Web support

**coherence** supports networking Web builds without any additional setup or limitations.

{% hint style="info" %}
Refer to Unity's [Technical limitations](https://docs.unity3d.com/Manual/webgl-technical-overview.html) on Web builds.
{% endhint %}

On top of that, **coherence Cloud** allows you to share your builds easily — perfect for game jams and quick prototypes.

<figure><img src="/files/W8ug3ENEO42UfLp6TqW0" alt=""><figcaption><p>A coherence WebGL game hosted on the coherence Cloud</p></figcaption></figure>

Web builds use WebRTC to connect to the Replication Server, so the ports used to connect are different from the usual UDP ports used in other platforms.

This is managed automatically in most cases (including Sample UIs and using [Cloud Service](/2.3/hosting/coherence-cloud/coherence-cloud-apis.md)), but if you are connecting directly to the Replication Server (see [Replication Server API](/2.3/manual/replication-server/replication-server-api.md)), use the Signalling Port:

* Replication Server reads this port via `--signalling-port` (see [CLI flags](/2.3/manual/replication-server/command-line-interface.md))
* In Unity, check coherence > Settings for Web Port (it's different for Worlds and Rooms!)

<figure><img src="/files/zSaoc7CrVSleXYVekxpI" alt=""><figcaption></figcaption></figure>

### Web builds in Linux

**Ubuntu:** `sudo apt install clang libtinfo5 python python-setuptools`

**Other distros:** check with your package repository to install the correct packages for your distribution.

{% hint style="warning" %}
Web builds running **locally** can't connect to the coherence Cloud on Firefox.
{% endhint %}


---

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