How to export a Godot 4 game to run on the web on itch.io

On the Go Godot Jam 4 Discord I just saw some people having issues with how to get HTML5 exports from Godot 4 to work on itch.io, and since I just had to do this for my own game submission to the jam as well I decided to jot my steps down here (and on the Discord too) as it seems to be a bit of a pain for people.

Godot C# Community Jam

Black Screen with function signature mismatch while exporting to itch.io - Godot Forums

godot4 - Error The following features required to run Godot projects on the Web are missing: Cross Origin Isolation, SharedArrayBuffer - Stack Overflow

How can I fix this in web export for godot 4? : r/godot

How To Make Godot Game Playable In Browser

importing to Godot - Support

So This is Your First Jam With Godot 4? Here is What You Should Know Beforehand!, by Jaime Crespo

Pandaqi (@PandaqiGames) / X

Godot Game Tools - GGT by Vinicius Guerrero