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Features

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Feature Summary
Deceptive Simplicity After Dark is a Hugo theme, making it a suitable starting point for novice and advanced developers alike. It advances using the "Code for today, not for tomorrow" philosophy of XP and includes only what's necessary to create and run your site – nothing more.
Semantic Versioning Predictable changes enable theme users stay up-to-date with what's happening. After Dark uses Semantic Versioning and maintains a CHANGELOG for easy consumption.
Inclusive Design Optimized for mobile, tablet, desktop and terminal browsers.
Performance Optimized Page content, favicon and styles load in a single request on all pages. With exception to the BPG image polyfill, all external resources used by the theme are loaded asynchronously and only when necessary. This keeps pages zippy and affords ~1 second page loads over 2G when hosted using a CDN.
Vertical Scaling After Dark is capable of generating ~1000 pages per second thanks to Hugo and is likely to become faster over time.
Intelligent Lazy Loading Lazily load your images, iFrames and script embeds. After Dark uses the lazysizes library, a zero-configuration JavaScript library with support for LQIP and responsive images.
BPG Image Support After Dark supports the BPG Image format. Native browser support for BPG is dismal. As a result, a polyfill has been provided to render BPG images.
Open Graph After Dark provides automatic and configurable Open Graph support, making social shares pop like 37 pieces of flair.
Search Optimization Using Schema Structured Data and meta tags, After Dark gives crawlers rich data about the site structure and content. No configuration required.
Personalization Adjust CSS using purpose-built customization file. Choose one of several theme variants. Swap in your own favicon. Leverage block templates to quickly extend new custom layouts. And use hack.css flexbox grids and CSS components to add style your site.
Section Menu Add and customize your site's global navigation. After Dark uses Hugo's Section Menu for "the Lazy Blogger", making navigation easy to create and predictable to use. Don't want navigation? Simply disable it from your site configuration.
Content Reuse Sometimes plan markdown isn't enough to build engaging page content. For this reason After Dark provides a number of customizable partials and shortcodes for adding things like blockquotes, figure elements and hackcss components to your posts, pages and layouts. Mix and match to create truly unique experiences.
Related Content Promote more of your content to your site visitors. By offering your readers more content that's relevant to them you can increase your site's page views, the time spent on your site and reader loyalty.
Table Of Contents Help users locate and share information on your site. By providing a TOC, users will spend less time scrolling to locate information in larger documents and are more likely to deep link to specific information on a page.
Analytics Understand and action on user behavior by enabling Google Analytics. After Dark uses the async tracking snippet to boost performance and allow script preloading.
User Generated Content Improve search rankings and provide interactivity to users with UGC. Enable Disqus commenting to get started.
Reading Time Set user expectations up-front. After Dark provides estimated reading time for each post near the top of the page. This feature is automatic and assumes a reading speed of 200-250 words per minute.
Modification Dating Surface recently updated content to users and crawlers, allowing them to understand when a post or page was was last modified. Recently updated posts will be flagged as modified and visually lifted upwards in chronological listings.
Syntax Highlighting Share code snippets with style. After Dark provides opt-in syntax highlighting with support for line numbers and highlighted lines.
Taxonomy Pages Help users discover taxonomic content. After Dark automatically generates taxonomy and taxonomy terms pages and links to them in post bylines.
Post Bylines Rich post bylines include optional author name, word count, links to taxonomy pages and metadata for search engines.
Pagination Pagination can be hard. After Dark makes it easy with simple list pagination with page indication.
Animated Error Page Decrease bounce rate when URL errors occur. After Dark provides an engaging 404 page with animated background.
Accessibility After Dark uses semantic HTML5 markup to provide a better experience for aural readers and facilitates navigation via keyboard only.

Demo & Tutorial

Head to Hack Cabin for a production example of which the site architecture can be recreated using a step-by-step guide. And while you’re looking at examples check out a few others for inspiration.

Getting Started

Install Hugo and, optionally, elinks on your machine. Instructions for installing both using Homebrew on macOS:

brew install hugo elinks

Then run the install script located in bin/install.sh, or just paste this into a terminal and press Enter:

curl -s https://raw.githubusercontent.com/comfusion/after-dark/master/bin/install.sh | sh

Installation should complete in a matter of seconds.

Customizing

Section Menu

After Dark uses Hugo’s Section Menu for Lazy Bloggers to produce global site navigation if enabled.

To customize the menu, update the settings in config.toml like:

[[menu.main]]
  name = "Home"
  weight = 1
  identifier = "home"
  url = "/"
[[menu.main]]
  name = "Posts"
  weight = 2
  identifier = "post"
  url = "/post/"

Or update the menu using front matter from your pages:

menu = "main"
weight = 3

Intelligent Lazy Loading

Lazy loading prioritizes when and how images and more are downloaded, improving perceived performance and reducing page load times. When activated, lazy loading will start working automatically. No JavaScript configuration is necessary.

What makes it Intelligent? If no lazy loaded content is detected on a page when the site is generated, the feature will not be activated and no additional downloads will occur.

To activate lazy loading with lazysizes, add lazyload to the class attribute of your images/iframes in conjunction with a data-src and/or data-srcset attribute:

<!-- non-responsive -->
<img data-src="image.jpg" class="lazyload">
<!-- responsive with automatic sizes calculation -->
<img
  data-sizes="auto"
  data-src="image2.jpg"
  data-srcset="image1.jpg 300w, image2.jpg 600w, image3.jpg 900w"
  class="lazyload">
<!-- iframe example -->
<iframe frameborder="0"
  class="lazyload"
  allowfullscreen
  data-src="//www.youtube.com/embed/ZfV-aYdU4uE">
</iframe>

To help get you started, After Dark includes a Shortcode taking advantage of this feature, enabling you to easily create lazy-loaded figure elements within your markdown content.

Additional information and examples, including how to set-up and use LQIP (Low-Quality Image Placeholders), are available on the lazysizes repository on GitHub.

BPG Image Support

The BPG image format provides high-fidelity images which look more like PNGs but loads as fast as a JPG. From a compression standpoint, BPG really shines when handling animations. With support for alpha transparency and given its compression, BPG literally steamrolls the GIF format of yesteryear.

Why haven’t I heard of BPG? You have now, and you’ll learn about all kinds of cool stuff like this by keeping your eye on Perf.Rocks. Please help push BPG forward by encouraging browser makers to improve current support levels.

Use BPG just like any other image with the img element with a .bpg image file extension on any encoded image. After Dark will asynchronously download a BPG polyfill and render the image in a canvas element.

BPG image support is enabled by default in After Dark. To disable support for BPG images add the following to your site configuration:

[params.seo]
  disable_bpg = true # Disable BPG image support

Promote more of your content to your site visitors. By offering your readers more content that’s relevant to them you can increase your site’s page views, the time spent on your site and reader loyalty.

Related content surfaces content across sections by matching taxonomy tags. If After Dark finds related content, it will automatically output a list of links to that content in reverse chronological order below the byline of your post content.

By default After Dark will display up to 7 items by title along with their reading times. You can limit the number of items displayed by setting the following optional parameter in the [params] section of your config.toml file:

related_content_limit = 5

Learn more about Related Content in Hugo, including configuration options you may wish to add to your site.

Table Of Contents

Help users locate and share information on your site. By providing a TOC, users will spend less time scrolling to locate information in larger documents and are more likely to deep to specific information on a page.

To automatically generate a TOC for a post based on the page outline, add the following to your post front matter:

toc = true

To hide the TOC set toc = false, or simply remove the setting from the post front matter.

After Dark uses the HTML5 details and summary elements to provide a TOC which does not require use of CSS or JavaScript to function.

When a page is first loaded, the TOC will be collapsed so it does not clutter up the page. Once expanded, selecting an item in the TOC will smooth scroll to that section within the document, highlight the section header and updating the browser’s location bar for deep linking and back-button support.

Open Graph

After Dark leverages Open Graph tags using the undocumented internal template to achieve rich sharing cards for Facebook and other social networks, as shown here:

Open Graph sharing card screenshot

To create a social sharing card like the one shown above, specify author in config.toml and, optionally, override it from your front matter as shown here:

title = "Become a Digital Nomad in Bali: The Lost Guide"
description = "Everything you need to know to become a Digital Nomad in Bali."
author = "After Dark"
date = "2017-02-02T11:57:24+08:00"
publishdate = "2017-01-28T02:31:22+08:00"
images = [
  "https://source.unsplash.com/-09QE4q0ezw/2000x1322"
]

Why use array notation for one image? The Open Graph protocol supports arrays and users may wish to extend Hugo internal templates to do so.

To configure site-wide Open Graph images to use as fallbacks for posts not specifying their own open graph images, add an array of URLs to the [params] section in config.toml:

images = [
  "https://source.unsplash.com/-09QE4q0ezw/2000x1322" # Default Open Graph image for site
]

See Unsplash Source for image configuration options.

Note: While it would be possible, After Dark does not currently support relative links to images. If you would like to see this feature, please open a new issue.

Search Optimization

After Dark is built with SEO in mind. Schema Structured Data and other meta are applied to give robots what they want, automatically, without any configuration necessary.

The default set-up helps ensure your After Dark site will rank well in SERPs and prevent search crawlers from indexing undesirable content. Fine-tune your search settings using the following available options.

Webmaster Verification

Verify your site with several webmaster tools including Google, Bing, Alexa and Yandex. To allow verification of your site with any or all of these providers simply add the following to your config.toml and fill in their respective values:

[params.seo.webmaster_verifications]
  google = "" # Optional, Google verification code
  bing = "" # Optional, Bing verification code
  alexa = "" # Optional, Alexa verification code
  yandex = "" # Optional, Yandex verification code

Note: Claiming your site with Alexa was retired in May 2016. However, Alexa verification has been added as a convenience for existing sites migrating to After Dark.

Meta Descriptions

Well-crafted page titles help catch the human eye on search results pages and meta descriptions provide a summary of the content and why its relevant for the reader, driving click-throughs.

To add a custom meta description to your pages and posts add description to the front matter:

description = "Everything you need to know to become a Digital Nomad in Bali."

In addition to appearing in search engines, meta descriptions also appear on individual pages and in content summaries in After Dark, adding transparency to how your page will appear in search.

If no custom description is provided, After Dark will fallback to the description provided in config.toml. Learn more on how to craft your meta descriptions.

Modification Dating

Help user agents know when posts were last modified. To do so add publishdate to your page front matter and update date anytime you make an update to a post.

Updates will be made visible to readers by surfacing content higher in your page and post listings and by using visible callouts on content summaries. For robots, making this change will automatically update Schema Structured Data and Web feeds, as well as the lastmod setting in your sitemap.xml file.

You can be specific and use a datetime (with timezone offset) like:

date = "2017-02-02T01:20:56-06:00"
publishdate = "2016-11-21T10:32:33+08:00"

Or less specific and use just the dates:

date = "2017-02-02"
publishdate = "2016-11-21"

In addition to date and publishdate, it’s also possible to set an expiry date. Expired posts will automatically disappear when the site is built, but the content will be retained. To future- or back-date content for expiration, set the expirydate field in the front matter.

Index Blocking

Just because a page appears in your sitemap.xml does not mean you want it to appear in a SERP. Examples of pages which will appear in your sitemap.xml that you typically do not want indexed by crawlers include error pages, search pages, legal pages, and pages that simply list summaries of other pages.

Though it’s possible to block search indexing from a robots.txt file, After Dark makes it possible to block page indexing using Hugo configuration as well. By default the following page types will be blocked:

To customize default blocking configure the noindex_kinds setting in the [params] section of your config.toml.

For example, if you want to enable crawling for sections appearing in Section Menu, add the following to your configuration file:

[params]
  noindex_kinds = [
    "taxonomy",
    "taxonomyTerm"
  ]

To block individual pages from being indexed add noindex to your page’s front matter and set the value to true, like:

noindex = true

And, finally, if you’re using Hugo v0.18 or newer, you can also add an _index.md file with the noindex front matter to control indexing for specific section list layouts:

├── content
│   ├── modules
│   │   ├── starry-night.md
│   │   └── flying-toilets.md
│   └── news
│       ├── _index.md
│       └── return-flying-toasters.md

To learn more about how crawlers use this feature read block search indexing with meta tags.

For related content split across multiple pages in a sequence After Dark supports use of prev and next settings in your front matter. Use them to provide semantic relationships between pages in a segmented article or series or LiveBlogPosting.

prev = "/series/learn-to-code/part-one/"
next = "/series/learn-to-code/part-three/"

Link Types are commonly shown at the top of the page in terminal browsers as auxiliary means of navigation and may help crawlers better understand relationships within your content.

Learn more about link types and how to customize Hugo taxonomies.

Meta Keywords

Meta keywords offer semantic detail to crawlers regarding the subject matter of your content. Keywords meta are generated automatically for pages given the tags used for that page, and for other pages using the site categories taxonomy. Keywords and key phrases may be customized by setting a keywords array in your front matter:

keywords = [
  "web development",
  "digital marketing",
  "social media",
  "link building"
]

While not considered relevant to some crawlers, keywords can be a useful way to document target search terms for use in PPC online advertising and provide semantic value to your pages.

Markdown Output

Gain more control over markdown conversion to HTML. By modifying the markdown processor settings you can take advantage of Blackfriday features not enabled by default.

To customize conversion output add a [blackfriday] section to your site’s config.toml file like so:

[blackfriday]
  hrefTargetBlank = true
  fractions = false

Overrides to theme markdown processing defaults are available from page front matter as well, giving you control on a page-by-page basis.

See the Hugo docs for additional configuration options.

Content Reuse

Keep your content DRY and improve thematic consistency across your site. After Dark provides a number Shortcodes and composable components to help you keep your content and layouts easy to maintain.

Take for example After Dark’s blockquote shortcode:

<blockquote class="" cite="">
  
  
    <cite><a target="_blank" href=""></a></cite>
  
    <cite></cite>
  
</blockquote>

Use it in your page or post markdown files like:


  <p>When you create your own Branded Short Domain, you can expect to see up to a 34% increase in CTR when compared to standard bit.ly links.</p>

Additional theme-provided shortcodes at your disposal:

Also included are a number of shortcodes for hackcss components. These shortcodes function across After Dark theme variants and were created as partials, enabling reuse in both your content as well as your personalized layouts:

To create your own custom shortcodes add a layouts/shortcodes directory to your site, place your shortcodes within and start using them in your markdown content. To create or override provided components add a layouts/partials/components directory to your site and reference the theme-provided files as you hack away.

Reference the Hugo docs for shortcode usage instructions and see the inline documentation within each shortcode for example usage instructions.

Syntax Highlighting

Provide a richer experience when sharing code snippets on your site. After Dark provides opt-in support for code highlighting using the lovely One Dark and One Light syntax themes for Pygments.

Syntax Highlighting screenshot

To set-up syntax highlighting for your After Dark site:

Then choose either ./dist/light.css or dark.css depending on your Theme Variant and copy the contents of the file into your Custom Styles file.

Once configured, syntax highlighting with Pygments can be achieved using the Hugo built-in highlight shortcode. Reference Hugo’s Syntax Highlighting docs for usage instructions.

Not completely satisfied? Atom One Pygments is built as a theme roller, making it possible to modify the look-and-feel of the resulting syntax highlighting. Make it your own. See the README for more details.

Personalization

After Dark uses hack.css to automatically style your markup, giving you instant access to flexbox grids, light and dark theme variants, and other pre-built components. Use them while creating new sections leveraging block templates. Additional personalization options listed below.

Custom Styles

Customize theme styles without forking using Hugo’s inbuilt Partial Templates. To get started:

  1. Create a critical-custom.css in your site’s layouts/partials/head directory. If the directory does not exist yet, simply create it.
  2. Add your custom styles inside the file.

Example customization file:

/* override theme defaults */
.muted {
  color: rgba(255, 255, 255, 0.5);
}
/* custom styles */
figure {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
figure img {
  max-width: 80%;
}
figure a {
  border-bottom: none !important;
}
figure a:hover {
  background-color: inherit !important;
}

Styles are inlined into the head of each page. If you would prefer to use external stylesheets override the partials/global-styles.html template, modeling from the theme’s version of the file, and make any adjustments you see fit.

Theme Variants

hack.css provides a few variants you may wish to use instead of the After Dark defaults. To download them do an npm install from /themes/after-dark/ (assumes NodeJS installed).

Once downloaded, open ./node_modules/hack/dist, copy the styles you wish to use into a critical-vendor.css template override and apply the variant by setting theme_variant in your site config to one of:

"standard"
"hack dark-grey"
"hack solarized-dark"

Once variant applied, open your browser’s dev tools and test the changes by previewing your site on mobile, tablet and desktop at different display resolutions and orientations—overriding and making any desired changes to your overridden critical-theme.css, 404 page, theme-color.html and Custom Styles.

Favicon

After Dark ships with a lightweight SVG favicon embedded into every page. To customize or replace it create a file named favicon.html under layouts/partials/head within your site and place an icon link within it.

Why SVG? Though they don’t have perfect browser support yet, SVG favicons are smaller in size and more flexible. SVG favicons can be styled with CSS or even animated with JavaScript.

License

Copyright © 2016-2017 Josh Habdas josh@habd.as
This work is free. You can redistribute it and/or modify it under the
terms of the Do What The Fuck You Want To Public License, Version 2,
as published by Sam Hocevar. See the COPYING file for more details.