Why use YAML?
Using YAML with HUGO is a breeze. Hugo has supported yaml since 2013. and while TOML is the recommended configuration, I find YAML more readable. And I use YAML more often for other projects.
Thoughts on switching
Negatives: A lot of hugo documentation uses toml.
Postitives: Yaml seems to be winning the markdown language (2018). And I’ve been having to use Yaml with other projects. Hugo, is the only project I use that defaults to toml.
First, change your config.toml to config.yaml.
You can use an online convert like: https://toolkit.site/format.html
Which can turn this:
baseURL = "http://example.org/" languageCode = "en-us" title = "My New Hugo Site"
baseURL: 'http://example.org/' languageCode: en-us title: My New Hugo Site
Second Update your front matter and archtypes
Hugo’s front-matter (and archtypes) can use YAML also.