Main features

The following features are present in several static site generators (SSGs); you might almost call them standard:

• Markdown or HTML content with YAML metadata in the frontmatter.
• Support for themes.
• Sass/SCSS support (via libsass).
• Can generate a search index for use by lunr.js.
• Shortcodes for more expressive and extensible content.

The following features are among the ones that set wmk apart:

• By default, the content is rendered using Mako, a template system which makes all the resources of Python easily available to you. However Jinja2 templates are also supported if that is what you prefer.
• "Stand-alone" templates – i.e. templates that are not used for presenting markdown-based content – are also rendered if present. This can e.g. be used for list pages or content based on external sources (such as a database).
• Additional data for the site may be loaded from separate YAML files ­ or even (with a small amount of Python/Mako code) from other data sources such as CSV files, SQL databases or REST/graphql APIs.
• The shortcode system is quite powerful and flexible. For instance, among the default shortcodes are an image thumbnailer and a page list component. A shortcode is just a template, so you can easily build your own.
• Optional support for the powerful Pandoc document converter, for the entire site or on a page-by-page basis. This gives you access to such features as LaTeX math markup and academic citations, as well as to Pandoc's well-designed filter system for extending markdown. Pandoc also enables you to export your content to other formats (such as PDF) in addition to HTML, if you so wish.
• Also via Pandoc, support for several non-markdown input formats for content, namely LaTeX, Org, RST, Textile, Djot, Typst, man, JATS, TEI, Docbook, RTF, DOCX, ODT and EPUB.

The only major feature that wmk is missing compared to some other SSGs is tight integration with a Javascript assets pipeline and interaction layer. Although wmk allows you to configure virtually any assets processing you like, this nevertheless means that if your site is reliant upon React, Vue or similar, then other options are probably more convenient.

That exception aside, wmk is suitable for building any small or medium-sized static website (up to a couple of thousand pages, depending on the content).