Day One can convert text written with Markdown into rich text. Conversion will happen in real-time as it is typed. Or use a Code Block to write entire sections using Markdown. Additional formatting tools can be found int he following two guides: iOS, macOS.
When using a code block, click/tap the code icon at the bottom right to switch between Edit and Read modes.
A code block may also be initiated by typing 3 back ticks and tap the Spacebar.
Markdown Information
Markdown, created by John Gruber of Daring Fireball, is the technology we chose to use to allow rich text within Day One journal entries. Markdown allows italic and bold, along with several other simple formatting options that can be written using plain text and display properly in Read views. Markdown syntax is available in Day One and is toggled On by default.
Day One for Android does not have a Markdown toolbar, but the Markdown syntax featured on this page can be manually typed out to format text.
Day One takes a similar approach to Markdown as GitHub. See GitHub Flavored Markdown.
Day One Markdown Syntax
Basics
*italic* or _italic_ / **bold** or __bold__
italic or italic / bold or bold
An inline link: [example](http://dayoneapp.com/).
An inline link: example.
An id link [example][id].
[id]: http://dayoneapp.com/
An id link example.
An auto-linked URL: http://dayoneapp.com/
Headers
# Header 1
## Header 2
### Header 3
#### Header 4
##### Header 5
###### Header 6
Lists
1. Numbered
2. List
1. Numbered
2. List
- Bulleted
- List
– Bulleted
– List
Note: To nest bullets use tab (Mac only) or two spaces further indented than the previous item (both Mac and iOS).
- [] Checklist
- [x] Checklist
Strikethrough and Highlight
For strikethrough, use two tildes on either side of the text:
~~Strikethrough~~
For Highlighting text, use two colons on either side of the text:
::Highlight::
Images

Blockquotes
> Angle brackets are used for blockquotes.
Angle brackets are used for blockquotes.
Tables
One | Two | Three
--- | --- | ---
Blue | White | Gray
Green | Yellow | Red
Note that because the first line of journal entries has special properties associated with Day One’s auto-bolding feature, tables must start on the second or subsequent line of a journal entry.
Horizontal Rules
Three or more dashes or asterisks --- ***
Code & Preformatted Text
<code>
spans are delimited by backticks. You can include literal backticks like `this`
.
[TAB]Preformatted text block using a tab.
Preformatted text block using a tab.
Citations
To make citations, use <cite> at the beginning of the citation and </cite> at the end of the citation.