Overview

The Sigma theme for Jekyll is a subjective theme that focuses on speed and SEO while maintaining an aesthetically pleasing appearance. It offers a modern and responsive design with features like a golden proportion header, a light/dark toggle button, and a sticky menu. The theme also includes SEO optimization, code block syntax highlighting, and the ability to integrate LaTeX math equations.

Features

• Golden proportion header: The theme includes a header design that follows the golden proportion, creating a visually pleasing layout.
• Modern and responsive design: The theme is designed to be modern and responsive, ensuring a seamless user experience on different devices.
• Light/dark toggle button: Users can switch between light and dark color schemes using the built-in toggle button.
• Search using lunr.js: The theme integrates the lunr.js library for efficient and fast search functionality.
• SEO friendly, fully optimized: The theme is optimized for search engines, helping improve the website’s visibility and ranking.
• Sticky menu + scroll up button: The menu stays fixed at the top of the page as the user scrolls, and a scroll up button is provided for easy navigation.
• Sticky sidebar with sidenavs: The theme includes a sticky sidebar with sidenavs, allowing easy access to navigation links.
• Layouts with sidebar right/left: Users can choose between layouts with the sidebar on the right or left side of the content.
• Set custom sidebar for every page: The theme allows users to set a custom sidebar for each individual page.
• Code blocks syntax highlighting: Code blocks are automatically highlighted for improved readability.
• LaTeX maths, Katex integrated: The theme integrates with Katex to support LaTeX math equations.
• Loop posts in category pages: Category pages display posts grouped by their respective categories.
• Links to next/previous posts (same category): Each post includes navigation links to easily navigate to the next or previous post in the same category.
• Links to next/previous posts (same tag): Navigation links are also available to move between posts with the same tag.
• Breadcrumbs with Schema.org: Breadcrumbs are implemented using Schema.org markup for improved search engine visibility.
• Schema.org for posts and categories: Posts and categories are marked up with Schema.org microdata to provide structured information to search engines.
• User interface multilanguage: The theme supports multiple languages for the user interface, allowing for localization.
• Advertisements zones (content and sidebar): The theme includes advertisement zones for both the content area and the sidebar.
• A lot of web services available: The theme supports integration with various web services to enhance functionality.
• Google Analytics: Users can easily integrate their Google Analytics tracking code into the theme.
• Open Graph: The theme includes Open Graph integration for improved social media sharing.
• Twitter Cards: Twitter Card integration is available, enhancing the appearance of shared links on Twitter.
• Sites verification: The theme supports verification of various website services, such as Google Search Console.
• Unit test repository: A unit test repository is provided for users to test the Sigma theme.

Installation

To install the Sigma theme for Jekyll, follow these steps:

1. Add the following line to your Jekyll site’s Gemfile:

gem "sigma-jekyll-theme"

2. Add the following line to your Jekyll site’s _config.yml file:

theme: sigma-jekyll-theme

3. Execute the following command in your Jekyll project directory:

bundle install

4. Alternatively, you can install the theme directly by running the following command:

gem install sigma-jekyll-theme

Summary

The Sigma theme for Jekyll is a highly customizable theme that focuses on speed, SEO, and beautiful design. It offers a range of features such as a golden proportion header, responsive design, and a light/dark toggle button. The theme is easy to install and provides various customization options, making it suitable for a wide range of websites. With its integration of SEO optimization, code block syntax highlighting, and support for LaTeX math equations, the Sigma theme enhances both the visual appeal and functionality of Jekyll sites.