Getting Started With Lumocs

To bootstrap a Lumocs site, you'll need to set up three essential files: _config.ts, _data.json, deno.json, and add your first content

It is recommended to organize the files like this:

/                          # Your repository root
├── /docs                  # The documentation folder
│   ├── _config.ts         # Lume configuration file
│   ├── deno.json          # Deno configuration file
│   └── /src               # Documentation source
│       ├── _data.json     # Global variables
│       ├──       # Documentation index, will become index.html
│       └── <other pages>  # Documentation other pages

Everything related to Lumocs is placed in a /docs subfolder in this example. The actual content and global variables are then placed in another subfolder called /docs/src.


Before we start, make sure that you have Deno (version 1.37 or higher) installed on your system. If not, refer to the official instruction to install Deno.

Automated Bootstrapping

Run the following command to bootstrap a Lumocs site automatically:

deno run -Ar docs

This will create all required files in the subfolder /docs of current directory. To test your site, cd docs and deno task serve. Then visit http://localhost:8000.

Manual Bootstrapping


This file controls which version of Lume and Lumocs should be used, and set up the scripts to build your site.

  "tasks": {
    "lume": "echo \"import 'lume/cli.ts'\" | deno run --unstable -A -",
    "serve": "deno task lume -s --port=8000"
  "imports": {
    "lume/": "",
    "lumocs/": "../"


The only thing you need to do in this file, is to set the public url of your site, to have the sitemap show complete URLs.

Advanced users can activate additional Lume plugins here, more on that later.

import lume from "lume/mod.ts";
import lumocs from "lumocs/mod.ts";

const siteUrl = "";

const site = lume({
  src: "src",
  location: new URL(siteUrl),


// OPTIONAL: site.copy("img")

export default site;

To copy extra content, such as images or other assets, during the build process, use the site.copy() method and specify the folder name you want to copy. Replace `img`` in the example with the name of the folder containing the content you wish to include in your website. This ensures that the specified folder and its contents will be copied to the appropriate location when your site is built.


This can be seen as the global configuration for the site, all parameters in this file is used as the default front matter for each generated page.

  "lang": "en",
  "layout": "page.njk",

  "metas": {
    "title": "=title",
    "site": "Site Name",
    "lang": "en",
    "description": "=description"

  "top_links": [
      "icon": "fab fa-github",
      "title": "GitHub Repsitory",
      "url": ""
      "icon": "fab fa-npm",
      "title": "NPM Library",
      "url": ""

  "nav_links": [
      "title": "GitHub Repsitory",
      "url": ""
      "title": "NPM Library",
      "url": ""


Now you are ready to add content; Add the following markdown, including front matter, to src/

title: "First Page"
nav_order: 1

# First Page

Hello Lumocs!

Generating Your Site

To serve your site with hot reload, navigate to the documentation root (/docs in this example) and run:

deno task serve

You can access your live site at http://localhost:8000.

To compile your site, run:

deno task lume

This will render the site to a new subfolder to /docs called _site. The lume command is useful when you want to deploy your site, and is run automatically if you deploy using the supplied GitHub Pages workflow.