Nunjucks is powerful template language created by Mozilla and inspired by ninja2. This format is enabled by default and you can use it to create layouts and pages.

Creating layouts

Add a file with .njk extension in the _includes directory. Use the front matter to set data to the template.

title: Welcome to my page
intro: This is my first post using lume, I hope you like it!

    <title>{{ title }}</title>

    <p>{{ intro }}</p>

Creating pages

Creating pages is the same as creating layouts, just place the .njk file outside the _includes directory.

njk filter

The Nunjucks plugin also register the njk filter, to render any string value as a Nunjucks template and output a HTML. The filter accepts an object with data.

  username: Oscar
text: "Hello {{ username }}"

<!-- Render a string -->
<div>{{ text | njk(data) | safe }}<div>

Configure the Nunjucks plugin

In _config.ts, the second argument of lume() is used to configure the plugins that are enabled by default (like this!). Use it to configure the nunjucks plugin.

For example, let's configure nunjucks and change the default folder of the _includes:

// Nunjucks plugin configuration
const nunjucks = {
  includes: "_layouts",
  options: {
    throwOnUndefined: true,

// Apply the plugin config
const site = lume({}, { nunjucks });

Now, Lume will search the .njk templates in the directory _layouts instead of _includes.