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Type on Strap 🎨

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Default Type on Strap blog

A free and open-source Jekyll theme. Based on Rohan Chandra type-theme packed with extra features and easily cusomizable:

Demo Site

Table of Contents


As a ruby gem πŸ’Ž

Check out this tutorial: Use as Ruby Gem

As a github page πŸ“‹

  1. Fork and clone the Type on Strap repo: git clone
  2. Install Jekyll: gem install jekyll, check #1 if you have a problem.
  3. Install the theme's dependencies: bundle install
  4. Customize the theme
  5. Run the Jekyll server: bundle exec jekyll serve


Here are the main files of the template

β”œβ”€β”€ _includes	               # theme includes
β”œβ”€β”€ _layouts                   # theme layouts (see below for details)
β”œβ”€β”€ _portfolio	               # collection of article to be populated in the portfolio page
β”œβ”€β”€ _posts                     # Blog posts
β”œβ”€β”€ _sass                      # Sass partials 
β”œβ”€β”€ assets
|  β”œβ”€β”€ js	               # theme javascript, Katex, jquery, bootstrap, jekyll search, 
|  β”œβ”€β”€ css                     # isolated Bootstrap, font-awesome, katex and main css
|  β”œβ”€β”€ fonts		       # Font-Awesome, and other fonts
|  └── img		       # Images used for the template
β”œβ”€β”€ pages
|   β”œβ”€β”€		       # To be displayed when url is wrong
|   β”œβ”€β”€               # About example page
|   β”œβ”€β”€             # Gallery page for your photos
|   β”œβ”€β”€	       # Portfolio page for your projects
|   β”œβ”€β”€ search.html	       # Search page
|   └──                # The tag page
β”œβ”€β”€ _config.yml                # sample configuration
β”œβ”€β”€ _data.yml
|  β”œβ”€β”€ authors.yml             # Update the post authors configurations 
|  β”œβ”€β”€ language.yml            # Localization configuration
|  └── social.yml              # Social configurations (RSS, Twitter, ...)
└── index.html                 # sample home page (blog page paginated)

Configure Type on Strap πŸ› 

Open _config.yml in a text editor to change most of the blog's settings.

If a variable in this document is marked as "optional", disable the feature by removing all text from the variable.

Site configuration

Configure Jekyll as your own blog or with a "baseurl" in in _config.yml:

Jekyll website without a "baseurl" (such as a GitHub Pages website for a given username):

baseurl: ""
url: ""

Jekyll website with "baseurl" (like the Type on Strap demo page):

baseurl: "/sub-directory"
url: ""

Please configure this before using the theme.

Meta and Branding

Meta variables hold basic information about your Jekyll site which will be used throughout the site and as meta properties for search engines, browsers, and the site's RSS feed.

Change these variables in _config.yml:

title: My Jekyll Blog                 # Name of website
avatar: assets/img/triangle.png       # Path of avatar image, to be displayed in the theme's header
description: My blog posts            # Short description, primarily used by search engines
favicon: assets/favicon.ico           # Icon displayed in the tab

You can also customize the seo tags default option following the jekyll-seo-tag plugin documentation.

Theme customization 🎨

Footer and Header's text

Customize your site header/footer with these variables in _config.yml:

header_text: Welcome to my Jekyll blog
header_feature_image: assets/img/sample3.png
footer_text: Copyright 2017

If you don't want anything, replace the value by " ".

Localisation string

Localization string is a way to quickly change the template language for text like Next Post or Follow on, ... You can find all the properties in _data/language.yml.

By default it is in english, but you can easily add your own language.

Google Analytics

To enable Google Analytics, add your tracking ID to _config.yml like so:

google_analytics: UA-NNNNNNNN-N

Comments (via Disqus)

Optionally, if you have a Disqus account, you can show a comments section below each post.

To enable Disqus comments, add your Disqus shortname to your project's _config.yml file:

disqus_shortname: my_disqus_shortname

Math typesetting with KateX

When KateX is set in _config.yml:

katex: true # to Enable it

You can then wrap math expressions with $$ signs in your posts and make sure you have set the katex variable in _config.yml to true for math typesetting.

For inline math typesetting, type your math expression on the same line as your content. For example:

Type math within a sentence $$2x^2 + x + c$$ to display inline

For display math typesetting, type your math expression on a new line. For example:

  \bar{y} = {1 \over n} \sum_{i = 1}^{n}y_i

Diagrams with Mermaid

Enable the mermaid-js diagram rendering by setting mermaid to true in the _config.yml. This will load and init the mermaid.min.js.

mermaid: true # to Enable it

Find all the help you need on the official mermaid documentation. You can create with ease diagrams. Add your mermaid script inside two mermaid divs (default Kramdown does not yet support mermaid). With the class="mermaid" inside the <div>:

<div class="mermaid">
    Alice->>John: Hello John, how are you?
    John-->>Alice: Great!

Social icons

In _data/social.yml you can customize the social icons from other wbesite you wish to display in the blog. The site icons come from Font Awesome.

Cookie consent

You can add a cookie consent with a disclaimer if you use Google Analytics while respecting the GDPR. Set to true, there will be a banner at the bottom of the page with the disclaimer and a approve button. Once the user clicks on "Approve" the cookies will be created for Google Analytics.

Share in article

The share icons are the one at the bottom of the blog page if enabled, to share the article on those platform.


Display in the footer. All icon variables should be your username enclosed in quotes (e.g. "username") in _data/social.yml, except for the following variables:

rss: true                                                   
stack_exchange: https://stackexchangecom/users/0000/first-last
youtube: UCqECaJ8Gagnn7YCbPEzWH6g  # Youtube token of your channel in the url 

You can update the RSS settings in _data/social to change the default feed path (generated by jekyll-feel).

Personalize your Blog Posts πŸ“

When writing a post, be sure in jekyll to:

  • Put it in the _posts folder
  • Name it with the date first like

Please refer to the Jekyll docs for writing posts.

Layout: Post

This are the basic features you can use with the post layout.

layout: post
title: Hello World                                # Title of the page
hide_title: true                                  # Hide the title when displaying the post, but shown in lists of posts
feature-img: "assets/img/sample.png"              # Add a feature-image to the post
thumbnail: "assets/thumbnails/sample-th.png"      # Add a thumbnail image on blog view
color: rgb(80,140,22)                             # Add the specified color as feature image, and change link colors in post
bootstrap: true                                   # Add bootstrap to the page
tags: [sample, markdown, html]

With thumbnail, you can add a smaller image than the feature-img. If you don't have a thumbnail you can still use the same image as the feature one. Or use the gulp task to create it.

The background used when color is set comes from lineart.png from xukimseven you can edit it in the config file (_config.yml > color_image). If you want another one, put it in /assets/img as well.

The bootstrap is not mandatory and is only useful if you want to add bootstrapped content in your page. It will respect the page and theme layout, mind the padding on the sides.

Post excerpt

The excerpt are the first lines of an article that is display on the blog page. The length of the excerpt has a default of around 250 characters or can be manually set in the post using:

in conflig.yml:

excerpt: true

Then in your post, add the excerpt separator:

layout: post
title: Sample Page
excerpt_separator: <!--more-->

some text in the excerpt
... rest of the text not shown in the excerpt ...

The html is stripped out of the excerpt so it only display text.

Image aligner

To easily add align images side by side in your article using the aligner.html include:

{% include aligner.html images="path/to/img1.png,path/to/img2.png,path/to/img3.png" column=3 %}

Use it in any markdown file. There are two fields in the include you need to look into:

  • images: Takes a string separated with , of all the images path.
    • It by default look into assets/img/ so give the path from there.
  • column: (OPTIONAL) Set the number of column you want your imaged displayed in.
    • default is 2 columns
    • column=3 set 3 columns
    • column="auto" makes as many columns as images

Code highlight

Like all CSS variables in the theme, you can edit the color of the code highlight in _sass > base > _variables.scss. The code highlighting works with base16 you can find existing example of your favourite highlight color scheme on this format.

Feature pages and layouts

All feature pages besides the "home" one are stored in the page folder, they will appear in the navigation bar unless you set Hide: true in the front matter.

Here are the documentation for the other feature pages that can be added through _config.yml.

Non-standard features are documented below.

Layout: Default

This layout includes the head, navigation bar and footer around your content. Unless you're making a custom layout you won't need it.

Layout: Home 🏑

This page is used as the home page of the template (in the index.html). It displays the list of articles in _posts. You can use this layout in another page (adding a title to it will make it appear in the navigation bar).

The recommended width and height for the home picture is width:2484px; and height:1280px which are the dimensions of the actual picture for it to be rolling down as you scroll the page.

If your posts are not displaying ensure that you have added the line paginate: 5 to _config.yml.

Layout: Page πŸ“„

The page layout have a bit more features explained here.

layout: page
title: "About" 
subtitle: "This is a subtitle"   
feature-img: "assets/img/sample.png" 
permalink: /about.html               # Set a permalink your your page
hide: true                           # Prevent the page title to appear in the navbar
icon: "fa-search"                    # Will Display only the fontawesome icon (here: fa-search) and not the title
tags: [sample, markdown, html]

The hide only hides your page from the navigation bar, it is however still generated and can be access through its link.

Feature: Portfolio πŸ—‚

Portfolio is a feature page that will take all the markdown/html files in the _portfolio folder to create a 3-columns image portfolio matrix.

To use the portfolio, simply create a with this information inside:

layout: page
title : Portfolio 

{% include portfolio.html %}

Portfolio posts

You can format the portfolio posts in the _portfolio folder using the post layout. Here are little explaination on some of the possible feature you can use and what they will do.

If you decide to use a date, please be sure to use one that can be parsed such as yyyy-mm-dd. You can see more format example on the demo posts that are available for the theme:

layout: post
title: Circus				       # Title of the portfolio post
feature-img: "assets/img/portfolio/cake.png"   # Will display the image in the post
img: "assets/img/portfolio/cake.png"           # Will display the image in the portfolio page
date: 2019-07-25		 	       # Not mandatory, however needs to be in date format to display the date

Portfolio in gem

Make sure your _config.yml contains the following if you are using the theme as a gem:

    output: true
    permalink: /:collection/:name

This creates the collection for Jekyll so it can find and display your portfolio posts.

Feature: Gallery πŸ–Ό

You can create a gallery using Masonry JS which will placing the pictures in optimal position based on available vertical space. You need to specify the gallery_path which will be used to find the pictures to render. It will take all of the picture under that directory. Then use the include to add it in your page.

layout: page
title: Gallery
gallery: "assets/img/pexels"

{% include gallery.html %}

Feature: Search πŸ”

The search feature is based on Simple-Jekyll-search there is a search.json file that will create a list of all of the site posts, pages and portfolios.

Then there's a search.js displaying the formatted results entered in the search.html page.

The search page can be hidden with the hide option. You can remove the icon by removing icon:

layout: search
title: Search
icon: "search"

Feature: Tags 🏷

Tags should be placed between [] in your post metadata. Separate each tag with a comma. Tags are recommended for posts and portfolio items.

For example:

layout: post
title: Markdown and HTML
tags: [sample, markdown, html]

Tags are case sensitive Tag_nAme β‰  tag_name

All the tags will be listed in tags.html with a link toward the pages or posts. The Tag page can be hidden with the hide option. You can remove the icon by removing icon (like for the search page).


Liquid tags

Jekyll works with liquid tags usually represented by:

{{ liquid.tag | filter }}

These are useful to render your jekyll files. You can learn more about them on shopify's doc

Minimizing and optimizing: css, js and images

Before you need to have node and npm installed:

  • Windows:
  • Ubuntu/Debian: apt-get install nodejs npm libgl1 libxi6
  • Fedora (dnf) / RHEL/CentOS (yum): dnf install node npm libglvnd-glx libXi

Then you need to install gulp-cli and its dependencies:

cd assets/
sudo npm install gulp-cli -g
npm install

You can run the default task that will compress the js, css and images and create the thumbnails for the supported image formats:

cd assets/
gulp default
gulp thumbnails # to create all of the images thumbnails
# tip: run a git status to see the changes
git status

You can find more about the gulp tasks in the gulpfile.js

Use as Ruby Gem πŸ’Ž

You can use Type-on-strap as a gem.

Ruby Gem Method Add this line to your Jekyll site's Gemfile (or create one):

gem "type-on-strap"

Add this line to your Jekyll site's _config.yml file:

theme: type-on-strap

Then run Bundler to install the theme gem and dependencies:

bundle install

Then you can start adding content like:

  • Add a index.html file
  • Add the feature page you want. (ex: as it is already in pages)
  • Add posts in _posts and _portfolio to be displayed

Remote Theme

Now you can use any theme gem with github pages with 29/11/2017 Github Pages Broadcast. For that remove all theme: attributes from _config.yml and add instead:

remote_theme: sylhare/Type-on-Strap 


This theme is licensed under the The MIT License (MIT)

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