Once Jekyll is running, you can start with basic configuration by adding various entries to
_config.yml. Besides these descriptions, you can also read the annotated config file.
Table of Contents
- GitHub Pages
- Changing accent colors and sidebar images
- Changing fonts
- Using safe web fonts
- Choosing a blog layout
- Using the
bloglayout in a subdirectory
- Using the
- Adding an author
- Adding an author’s picture
- Adding social media icons
- Adding an email, RSS icon or download icon
- Enabling comments
- Enabling Google Analytics
- Using a custom analytics provider
- Changing built-in strings
- Adding legal documents
- Adding custom favicons and app icons
- Enabling newsletter boxes*
- Enabling Dark Mode*
The first order of business should be to set the correct
baseurl values in
url is the domain of your site, including the protocol (
https). For this site, it is
# file: _config.yml url: https://qwtel.com
If your entire Jekyll blog is hosted in a subdirectory of your page, provide the path in
baseurl with a leading
/, but no trailing
# file: _config.yml baseurl: /hydejack
Otherwise, provide the empty string
When hosting on GitHub Pages the
https://<username>.github.io (unless you are using a custom domain).
baseurl depends on the kind of page you are hosting.
- When hosting a user or organization page, use the empty string
- When hosting project page, use
For for information on the types of pages you can host on GitHub, see the GitHub Help article.
Changing accent colors and sidebar images
Hydejack allows you to choose the background image of the sidebar, as well as the accent color (color of the links, selection and focus outline, etc…) on a per-page, per-category, per-tag, per-author and global basis.
Set the fallback values in
_config.yml, which are used should no other rule (page, category, tag, author) apply:
# file: _config.yml accent_image: /assets/img/sidebar-bg.jpg accent_color: rgb(79,177,186)
accent_image property also accepts the special value
none which will remove the default image.
Hydejack also has a
theme_color property. When set, it will change the background color of the sidebar, as well as set the
theme_color property in the Web App Manifest. In some browsers, such as Chrome on Android, this will change the color of the browser’s UI components. The property can be overridden on a per-page basis, by setting it in the front matter.
Hydejack lets you configure the font of regular text and headlines, and it has built-in support for Google Fonts. There are three keys in
_config.yml associated with this:
google_fonts. The defaults are:
# file: _config.yml font: Noto Sans, Helvetica, Arial, sans-serif font_heading: Roboto Slab, Helvetica, Arial, sans-serif google_fonts: Roboto+Slab:700|Noto+Sans:400,400i,700,700i
font_heading must be valid CSS
font-family values. When using Google Fonts make sure they consist of at least two fonts (everything except the first entry will be used as a fallback until the fonts have completed loading).
google_fonts key is the string necessary to fetch the fonts from Google. You can get it from the download page at Google Fonts after you’ve selected one or more fonts:
Using safe web fonts
If you prefer not to use Google Fonts and use safe web fonts instead, set
# file: _config.yml hydejack: no_google_fonts: true
In this case,
font_heading do not have to contain more than one font. You may also remove the
google_fonts key in this case.
Choosing a blog layout
Hydejack features two layouts for showing your blog posts.
listlayout only shows the title and groups the posts by year of publication.
bloglayout is a traditional paginated layout and shows the title and an excerpt of each post.
In order to use the
list layout add the following front-matter to a new markdown file:
--- layout: list title: Home ---
If you want to use the
blog layout, you need to add
jekyll-paginate to your
Gemfile and to the
plugins list in your config file:
# file: Gemfile gem "jekyll-paginate"
# file: _config.yml plugins: - jekyll-paginate
You also need to add the
paginate_path keys to your config file, e.g.
# file: _config.yml paginate: 5 paginate_path: '/page-:num/'
blog layout needs to be applied to a file with the
.html file extension and the
paginate_path needs to match the path to the
index.html file. To match the
paginate_path above, put a
index.html with the following front matter in the root directory:
--- # file: index.html layout: blog title: Blog ---
For more information see Pagination.
blog layout in a subdirectory
If you want to use the blog layout at a URL like
/my-blog/, create the following folder structure:
├── my-blog │ └── index.html ├── !my-blog.md └── _config.yml
You can use the same
index.html as before:
--- # file: my-blog/index.html layout: blog title: Blog ---
(Optional) If you want to add a link to the blog in the sidebar, DO NOT add the
menu key to the front matter of
my-blog/index.html. Instead, create a new markdown file called
--- # file: !my-blog.md title: My Blog menu: true permalink: /my-blog/ sitemap: false ---
Finally, in your config file, make sue the
paginate_path matches the
# file: _config.yml paginate: 5 paginate_path: /my-blog/page-:num/
Adding an author
At a bare minimum, you should add an
author key with a
# file: _config.yml author: name: Florian Klampfer email: firstname.lastname@example.org
If you would like the author to be displayed in the about section below a post or project*, add an
about key and provide markdown content. I recommend using the YAML pipe
| syntax, so you can include multiple paragraphs:
# file: _config.yml author: name: Florian Klampfer email: email@example.com about: | Hi, I'm Florian or @qwtel... This is another paragraph.
Adding an author’s picture
If you’d like for the author’s picture to appear in addition the the about text (see above), you can either use the
jekyll-avatar plugin or provide URLs to images manually.
To use the plugin, add it to your
Gemfile and the list of
plugins in your config file:
# file: Gemfile gem "jekyll-avatar"
# file: _config.yml plugins: - jekyll-avatar
bundle install for the changes to take effect.
Make sure you have provided a GitHub username in your config file (
github_username), or to the author key (
author.github). See Adding social media icons for more.
To set an image manually, you have to provide an URL to the author’s
# file: _config.yml author: picture: /assets/img/me.png
If you’d like to provide multiple versions for screens with different pixel densities, you can provide
srcset keys instead:
# file: _config.yml author: picture: path: /assets/img/me.png srcset: 1x: /assets/img/me.png 2x: /firstname.lastname@example.org
The keys of the
srcset hash will be used as image descriptors. For more information on
srcset, see the documentation at MDN, or this article from CSS-Tricks.
Adding social media icons
Hydejack supports a variety of social media icons out of the box. These are defined on a per-author basis, so make sure you’ve followed the steps in Adding an author.
You can add a link to a social network by adding an entry to the
social key in to an author. It consists of the name of the social network as key and your username within that network as value, e.g.
# file: _config.yml author: social: twitter: qwtel github: qwtel
authors.yml to see which networks are available. You can also follow the steps here to add your own social media icons.
You can change the order in which the icons appear by moving lines up or down, e.g.
# file: _config.yml author: social: github: qwtel # now github appears first twitter: qwtel
To get an overview of which networks are available and how a typical username in that network looks like, see the included
Should providing a username not produce a correct link for some reason, you can provide a complete URL instead, e.g.
# file: _config.yml author: social: youtube: https://www.youtube.com/channel/UCu0PYX_kVANdmgIZ4bw6_kA
Adding an email, RSS icon or download icon
If you’d like to add an email , RSS , or download icon to the list, add the
download key, e.g.:
# file: _config.yml author: social: email: email@example.com rss: https://pietervantorre.com/feed.xml # make sure you provide an absolute URL download: https://github.com/qwtel/hydejack/archive/v8.1.1.zip
Hydejack supports comments via Disqus. Before you can add comments to a page you need to register and add your site to Disqus’ admin console. Once you have obtained your “Disqus shortname”, you include it in your config file:
# file: _config.yml disqus: <disqus shortname>
Now comments can be enabled by adding
comments: true to the front matter.
--- layout: post title: Hello World comments: true ---
You can enable comments for entire classes of pages by using front matter defaults. E.g. to enable comments on all posts, add to your config file:
# file: _config.yml defaults: - scope: type: posts values: comments: true
Enabling Google Analytics
Enabling Google Analytics is as simple as setting the
# file: _config.yml google_analytics: UA-XXXXXXXX-X
Conversely, if you want to disable it, you only have to remove the
google_analytics key and no GA code will be part of the generated site.
Using a custom analytics provider
If you want to use a different analytics provider, e.g. Matomo, you can add its code snippet to
_includes/my-body.html (create if it doesn’t exist). The default file contains example code for using Matomo.
Changing built-in strings
You can change the wording of built-in strings like “Related Posts” or “Read more” in
If you are using the gem-based version the file doesn’t exist, but you can get the default file here.
You will frequently find markers like
<!--post_title-->. You can place them freely within your string and they will be replaced with the content they refer to.
You may also use this feature to translate the theme into different languages. In this case you should also set the
lang key to your config file, e.g.
# file: _config.yml lang: cc-ll
cc is the 2-letter country code and
ll specifies a 2-letter location code, e.g.:
You may also change the strings used for formatting dates and times (look out for the
date_formats key), but be aware that the values you provide need to be valid Ruby format directives.
Adding legal documents
legal key in your config file as follows:
legal: - title: Impress href: /impress/ - title: Cookies Policy href: /cookies-policy/
When using Hydejack’s offline feature, the pages listed here will be downloaded and cached when loading the page for the first time.
Adding custom favicons and app icons
By default, Hydejack includes its own favicon, as well as app icons for in five different resolutions.
To change the favicon, place your own
assets/icons/ (create the folder if it doesn’t exist).
To use your own app icons, you need to prepare five square PNG files in the following resolutions, and put them into
assets/icons/ (create the folder if it doesn’t exist):
Additionally, you can provide tiles for Window 10:
If you don’t want to use PNGs, or want to use different resolutions, you have to provide your own
assets/ieconfig.xml when supporting Window 10). For more on web app manifests, see MDN.
Enabling newsletter boxes*
To enable showing newsletter subscription boxes below each post and project, provide your Tinyletter username to the
tinyletter key in the config file.
# file: _config.yml tinyletter: <tinyletter username>
To edit the content of the newsletter box, open
_data/strings.yml, and change the entries under the
If want to use a different mailing provider you can build your own form, and insert it into
_includes/my-newsletter.html. The file includes an example form for MailChimp, where you need to fill in
site.mailchimp.hidden_input (you can get these from MailChimp).
To build a completely new from, you can use the same CSS classes as Bootstrap. Note that only form, grid and utility classes are available. Check out Forms by Example for more examples.
Enabling Dark Mode*
Buyers of the PRO version have access to a dark-themed version of Hydejack.
Dark mode can be enabled in
config.yml under the
hydejack key and has three settings and two adjustments:
hydejack: dark_mode: dynamic: true sunrise: 6 sunset: 18 icon: true always: false
dynamic, will enable dark mode based on the client’s local time (unlike location-based sunset calculations, this approach does not require a permission form the user). You can adjust
sunset to change when to show the light/dark theme.
icon will show a switch to alternate between the light and dark mode at the top of the page.
always will cause dark mode to become the default theme at all times (combine with
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