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@dendronhq/eleventy-plugin-seo

An Eleventy plugin to generate meta tags for improved SEO.

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MIT

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About Eleventy Plugin SEO

An Eleventy plugin to generate meta tags for improved SEO using the Liquid or Nujucks templating engines.

GitHub Actions GitHub Actions code style: prettier Test Coverage Maintainability

I wrote this plugin when moving from Jekyll to Eleventy to get the functionality I previously had with Jekyll SEO Tag.

Features

  • Page title with styling options and pagination.
  • Page description.
  • Canonical URL.
  • Robots meta directive for pagination.
  • Author meta directive.
  • Open Graph markup.
  • Twitter Card markup.
  • Supports Liquid and Nunjucks.

Installation

Available on npm:

npm install eleventy-plugin-seo --save

Add the plugin to .eleventy.js:

const pluginSEO = require("eleventy-plugin-seo");

module.exports =  function(eleventyConfig) {
  eleventyConfig.addPlugin(pluginSEO, require("./src/_data/seo.json"));
};

Contributions and Support

This plugins does not come with GitHub Issues-based support, and users are instead encouraged to become active participants in its continued development - by fixing any bugs that they encounter, or by improving the plugin wherever it's found to be lacking.

If you wish to make a change, open a Pull Request - even if it just contains a draft of the changes you're planning, or a test that reproduces an issue - and we can discuss it further from there.

Usage

Add the following right before </head> in your site's template(s):

Liquid:

{% seo %}

Nunjucks:

{% seo "" %}

Done!

Front Matter

The plugin uses these front matters when available:

---
title: Some page title
excerpt: Some page excerpt
author: Jane Doe
image: foo.jpg
ogtype: website
showPageNumbers: false
---
  • ogtype defaults to article, set it to website or something more appropriate via front matter where required.
  • showPageNumbers is true by default, but may be turned off globally via plugin configuration or on a per-page basis via a page’s front matter.

Config

Pass in an object with config options to the plugin:

eleventyConfig.addPlugin(pluginSEO, {
  title: "Foobar Site",
  description: "Lorem ipsum dolor sit amet, consectetur adipiscing elit.",
  url: "https://foo.com",
  author: "Jane Doe",
  twitter: "username",
  image: "foo.jpg"
});

Alternatively keep the options in an external file and require it:

eleventyConfig.addPlugin(pluginSEO, require("./src/_data/seo.json"));

title

Uses the title in front matter and by default the site title gets appended to the page title, page title - site title. Page with page number gets appended to the page title when paginated.

See options for customization.

description

Uses front matter excerpt to generate the description. If no excerpt is set for a page it falls back on using the site description in the config.

url

Full URL to the site without trailing slash, https://foo.com.

author

Full name of the site author, Jane Doe. Can be overridden on a per page basis using author in front matter.

twitter

Twitter username for the author of the site. Used when generating the markup for Twitter cards.

image

URL to default image to use if none is set in front matter when creating markup blocks for open graph and Twitter cards.

Options

The behavior of the output can be controlled via an options object that can be passed in with the config.

eleventyConfig.addPlugin(pluginSEO, {
  title: "Foobar Site",
  ...
  options: {
    titleStyle: "minimalistic",
    titleDivider: "|",
    imageWithBaseUrl: true,
    twitterCardType: "summary_large_image",
    showPageNumbers: false
  }
});

titleStyle

Setting the style to minimalistic removes the appending of the site title to all title strings.

titleDivider

Changes the divider between elements in the title output from - to any custom character or string.

imageWithBaseUrl

Prepends the config url to the image option.

twitterCardType

Card type for Twitter card. Default is summary.

showPageNumbers

Enables you to control whether page numbers are displayed in the title, globally. Default is true.

Additional Tags

While adding the seo tag is all that is needed, the plugin defines more tags that it uses internally that can be convenient to use in other places.

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