Neocities userpage toggle userscript
Quickly swap between a Neocities' website user page and actual website.
How?
To install the Userscript, you'll need a Userscript Manager extension. Tampermonkey is a popular one, and I use it as well.
If Chrome gives you a weird error, or you only see code, then you likely don't have one installed.
Once you have it installed, click "Install Userscript" and follow the prompts.
Usage
On a Neocities website that doesn't use a custom domain, trigger the Userscript action to toggle between the user page and website.
This sadly doesn't work on sites using a custom domain. I currently don't know of a way to convert a custom domain into a username.