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Naming and Path

Create a new file named YYYY-MM-DD-TITLE.EXTENSION and put it in the _posts/ of the root directory. Please note that the EXTENSION must be one of md and markdown.

Front Matter

Basically, you need to fill the Front Matter as below at the top of the post:

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---
title: TITLE
date: YYYY-MM-DD HH:MM:SS +/-TTTT
categories: [TOP_CATEGORIE, SUB_CATEGORIE]
tags: [TAG]     # TAG names should always be lowercase
---

Note: The posts’ layout has been set to post by default, so there is no need to add the variable layout in Front Matter block.

Timezone of date

In order to accurately record the release date of a post, you should not only setup the timezone of _config.yml but also provide the the post’s timezone in field date of its Front Matter block. Format: +/-TTTT, e.g. +0800.

Categories and Tags

The categories of each post is designed to contain up to two elements, and the number of elements in tags can be zero to infinity. For instance:

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categories: [Animal, Insect]
tags: [bee]

Table of Contents

By default, the Table of Contents (TOC) is displayed on the right panel of the post. If you want to turn it off globally, go to _config.yml and set the value of variable toc to false. If you want to turn off TOC for specific post, add the following to post’s Front Matter:

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---
toc: false
---

Comments

Similar to TOC, the Disqus comments is loaded by default in each post, and the global switch is defined by variable comments in file _config.yml . If you want to close the comment for specific post, add the following to the Front Matter of the post:

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---
comments: false
---

Mathematics

For website performance reasons, the mathematical feature won’t be loaded by default. But it can be enabled by:

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---
math: true
---

Mermaid

Mermaid is a great diagrams generation tool. To enable it on your post, add the following to the YAML block:

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---
mermaid: true
---

Then you can use it like other markdown language: surround the graph code with ```mermaid and ```.

Images

Preview image

If you want to add an image to the top of the post contents, specify the attribute src, width, height and alt for the image:

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---
image:
  src: /path/to/image/file
  width: 1000   # in pixels
  height: 400   # in pixels
  alt: image alternative text
---

Except for alt, all other options are necessary, especially the width and height, which are related to user experience and web page loading performance. Later section “Image size” will also mention this.

Image caption

Add italics to the next line of an image,then it will become the caption and appear at the bottom of the image:

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![img-description](/path/to/image)
_Image Caption_

Image size

In order to prevent the page content layout from shifting when the image is loaded, we should set the width and height for each image:

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![Desktop View](/assets/img/sample/mockup.png){: width="700" height="400" }

Image position

By default, the image is centered, but you can specify the position by using one of class normal , left and right. For example:

  • Normal position

    Image will be left aligned in below sample:

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    ![Desktop View](/assets/img/sample/mockup.png){: .normal }
    
  • Float to the left

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    ![Desktop View](/assets/img/sample/mockup.png){: .left }
    
  • Float to the right

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    ![Desktop View](/assets/img/sample/mockup.png){: .right }
    

Limitation: Once you specify the position of an image, it is forbidden to add the image caption.

Image shadow

The screenshots of the program window can be considered to show the shadow effect, and the shadow will be visible in the light mode:

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![Desktop View](/assets/img/sample/mockup.png){: .shadow }

CDN URL

If you host the images on the CDN, you can save the time of repeatedly writing the CDN url by assigning the variable img_cdn of _config.yml file:

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img_cdn: https://cdn.com

Once img_cdn is assigned, the CDN url will be added to the path of all images (images of site avatar and posts) starting with /.

For instance, when using images:

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![The flower](/path/to/flower.png)

The parsing result will automatically add the CDN prefix https://cdn.com before the image path:

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<img src="https://cdn.com/path/to/flower.png" alt="The flower">

Pinned Posts

You can pin one or more posts to the top of the home page, and the fixed posts are sorted in reverse order according to their release date. Enable by:

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---
pin: true
---

Code Block

Markdown symbols ``` can easily create a code block as following examples.

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This is a common code snippet, without syntax highlight and line number.

Specific Language

Using ```language you will get code snippets with line numbers and syntax highlight.

Note: The Jekyll style {% highlight LANGUAGE %} or {% highlight LANGUAGE linenos %} are not allowed to be used in this theme !

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# Yaml code snippet
items:
    - part_no:   A4786
      descrip:   Water Bucket (Filled)
      price:     1.47
      quantity:  4

Liquid Codes

If you want to display the Liquid snippet, surround the liquid code with {% raw %} and {% endraw %} .

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{% if product.title contains 'Pack' %}
  This product's title contains the word Pack.
{% endif %}

Learn More

For more knowledge about Jekyll posts, visit the Jekyll Docs: Posts.

This post is licensed under CC BY 4.0 by the author.