Gooey is a template project for creating a single-file WebKit application that runs go compiled to WASM.
Use build tags // +build js,wasm to identify the code you want compiled and run on the WebKit. I'm guessing most of your code is going to use those tags. The magefile builds the js,wasm target first, and sticks the resulting main.wasm binary in ./www. Afterward, ./www/* is packaged with vfsgen to create wwwData.go. Finally, native targets are executed and you end up with something that looks like a native application but is built on HTML/WASM. You can distribute the resulting binary, or serve the files in ./www directly over a normal web server.
Install Mage:
cd ~
git clone https://github.com/magefile/mage
cd mage
go run bootstrap.goBuild with mage -v build. If you get Package gtk+-3.0 was not found in the pkg-config search path on Linux, then run sudo apt-get install libwebkit2gtk-4.0-dev.