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eleventy 🕚

A simpler static site generator. An alternative to Jekyll. Written in JavaScript. Transforms a directory of templates (of varying types) into HTML.

Works with:

Getting Started

Requires version 8 of Node.js or higher.

npm install -g @11ty/eleventy

Available on npm. Previously known as eleventy-cli. Read more about local installation.

Run Eleventy

Make a directory with your project in it. Don’t include the first $ when you run these commands.

$ mkdir eleventy-sample
$ cd eleventy-sample

Run eleventy:

$ eleventy
Wrote 0 files in 0.02 seconds

Makes sense—this is an empty folder with no templates inside. So, let’s make a few templates.

$ echo "<!doctype html><title>Page title</title>" > index.html
$ echo "# Page header" >

We’ve now created an HTML and a markdown template. Now run eleventy again:

$ eleventy
Writing _site/README/index.html from ./
Writing _site/index.html from ./index.html
Wrote 2 files in 0.10 seconds

This will compile any content templates in the current directory or subdirectories into the output folder (defaults to _site). Congratulations—you made something with eleventy! Now put it to work with templating syntax, front matter, and data files (read on below).

See more sample projects

  1. @Heydon’s lovely Inclusive Web Design Checklist, converted to use eleventy. The original project took a JSON file and converted it HTML with some one-off JavaScript. This uses eleventy to transform the data using a nunjucks template, resulting in a cleaner, templated setup.
  2. 11ty-logo generates a template with eleventy that has hundreds of different font combinations in an attempt to pick a logo.

Command line usage

# Searches the current directory, outputs to ./_site

# Equivalent to
eleventy --input=. --output=_site

# Automatically run when template files change.
eleventy --watch

# Use only a subset of template types
eleventy --formats=md,html,ejs

# Find out the most up-to-date list of commands (there are more)
eleventy --help

Example: Default options

eleventy --input=. --output=_site

A in the current directory will be rendered to _site/template/index.html. Read more about Permalinks

Example: Same Input and Output

Yes, you can use the same input and output directories, like so:

# Watch a directory for any changes to markdown files, then
# automatically parse and output as HTML files, respecting
# directory structure.

eleventy --input=. --output=. --watch --formats=md
Exception: index.html Templates

When the input and output directories are the same and the source template is named index.html, it will output as index-o.html to avoid overwriting itself. This is a special case that only applies to index.html filenames. You can customize the -o suffix with the htmlOutputSuffix configuration option.

# Adds `-o` to index.html file names to avoid overwriting matching files.

eleventy --input=. --output=. --formats=html

Data (optional)

Front Matter on any Template

You may use front matter on any template file to add local data. Front matter looks like this:

title: My page title
<!doctype html>

This allows you to assign data values right in the template itself. Here are a few front matter keys that we use for special things:

  • permalink: Add in front matter to change the output target of the current template. You can use template syntax for variables here. Read more about Permalinks.
  • layout: Wrap current template with a layout template found in the _includes folder. Read more about Layouts.
  • pagination: Enable to iterate over data. Output multiple HTML files from a single template. Read more about Pagination.
  • tags: A single string or array that identifies that a piece of content is part of a collection. Collections can be reused in any other template. Read more about Collections.
  • date: Override the default date (file creation) to customize how the file is sorted in a collection. Read more about Collections.

Special Variables

Data Files

Optionally add data files to add global static data available to all templates. Uses the configuration option. Read more about Template Data Files.

Ignore files (optional)

Add an .eleventyignore file to the root of your input directory for a new line-separated list of files that will not be processed. Paths listed in your project’s .gitignore file are automatically ignored.

Configuration (optional)

Add an .eleventy.js file to root directory of your project to override these configuration options with your own preferences. Example:

module.exports = {
  dir: {
    input: "views"
Configuration Option Key Default Option Valid Options Command Line Override Description
dir.input . Any valid directory. --input Controls the top level directory inside which the templates should be found.
dir.includes _includes Any valid directory inside of dir.input. N/A Controls the directory inside which the template includes/extends/partials/etc can be found. _data Any valid directory inside of dir.input. N/A Controls the directory inside which the global data template files, available to all templates, can be found.
dir.output _site Any valid directory. --output Controls the directory inside which the transformed finished templates can be found.
dataTemplateEngine liquid A valid template engine or false N/A Run the data.dir global data files through this template engine before transforming it to JSON.
markdownTemplateEngine liquid A valid template engine or false N/A Run markdown through this template engine before transforming it to HTML.
htmlTemplateEngine liquid A valid template engine or false N/A Run HTML templates through this template engine before transforming it to (better) HTML.
templateFormats liquid,ejs, md,hbs, mustache,haml, pug,njk,html Any combination of these --formats Specify which type of templates should be transformed.
htmlOutputSuffix -o String N/A If the input and output directory match, index.html files will have this suffix added to their output filename to prevent overwriting the template.
filters {} Object N/A Filters can transform output on a template. Take the format function(str, outputPath) { return str; }. For example, use a filter to format an HTML file with proper whitespace.
onContentMapped function(map) {} Function N/A Callback executes when the full data map for all content is generated.
handlebarsHelpers {} Object N/A The helper functions passed to Handlebars.registerHelper. Helper names are keys, functions are the values.
nunjucksFilters {} Object N/A The helper functions passed to nunjucksEnv.addFilter. Helper names are keys, functions are the values.

Template Engine Features

Here are the features tested with each template engine that use external files and thus are subject to setup and scaffolding.

Engine Feature Syntax
ejs ✅ Include (Preprocessor Directive) <% include /user/show %> looks for _includes/show/user.ejs
ejs ✅ Include (pass in Data) <%- include('/user/show', {user: 'Ava'}) %> looks for _includes/user/show.ejs
Liquid ✅ Include {% include 'show/user' %} looks for _includes/show/user.liquid
Liquid ✅ Include (pass in Data) {% include 'user' with 'Ava' %}
Liquid ✅ Include (pass in Data) {% include 'user', user1: 'Ava', user2: 'Bill' %}
Mustache ✅ Partials {{> user}} looks for _includes/user.mustache
Handlebars ✅ Partials {{> user}} looks for _includes/user.hbs
Handlebars ✅ Helpers See handlebarsHelpers configuration option.
HAML ❌ but 🔜 Filters
Pug ✅ Includes include /includedvar.pug looks in _includes/includedvar.pug
Pug ✅ Excludes extends /layout.pug looks in _includes/layout.pug
Nunjucks ✅ Includes {% include 'included.njk' %} looks in _includes/included.njk
Nunjucks ✅ Extends {% extends 'base.njk' %} looks in _includes/base.njk
Nunjucks ✅ Imports {% import 'macros.njk' %} looks in _includes/macros.njk
Nunjucks ✅ Filters See nunjucksFilters configuration option.


Build Status: Build Status

npm run test
npm run watch:test


Major Roadmapped Features

  • Pagination
  • Tagging of content
  • Extensibility with system-wide content mapping IN PROGRESS
  • Components system for development reusability
  • Plugin system