You can put any file type into your `/content` directories, but Hugo uses the `markup` front matter value if set or the file extension (see `Markup identifiers` in the table below) to determine if the markup needs to be processed, e.g.:
| Goldmark | md, markdown, goldmark |Note that you can set the default handler of `md` and `markdown` to something else, see [Configure Markup](/getting-started/configuration-markup/).{{<new-in"0.60.0">}} |
| Blackfriday | blackfriday |Blackfriday will eventually be deprecated.|
|MMark|mmark|Mmark is deprecated and will be removed in a future release.|
The `markup identifier` is fetched from either the `markup` variable in front matter or from the file extension. For markup-related configuration, see [Configure Markup](/getting-started/configuration-markup/).
Some of the formats in the table above needs external helpers installed on your PC. For example, for Asciidoc files, Hugo will try to call the `asciidoctor` or `asciidoc` command. This means that you will have to install the associated tool on your machine to be able to use these formats. ([See the Asciidoctor docs for installation instructions](https://asciidoctor.org/docs/install-toolchain/)).
Because additional formats are external commands generation performance will rely heavily on the performance of the external tool you are using. As this feature is still in its infancy, feedback is welcome.
{{% /warning %}}
## Learn Markdown
Markdown syntax is simple enough to learn in a single sitting. The following are excellent resources to get you up and running:
* [Daring Fireball: Markdown, John Gruber (Creator of Markdown)][fireball]
* [Markdown Cheatsheet, Adam Pritchard][mdcheatsheet]