Book Options

All available options for book projects are documented below. See Creating a Book for an in-depth guide to creating books with Quarto.

Project

Options that define the type, render targets, and output of a project. Project options are specified under the project key. For example:

_quarto.yml

project:
  type: book
  output-dir: _book

title
type	Project type (default, website, book, or manuscript)
render	Files to render (defaults to all files)
execute-dir	Control the working directory for computations. file: Use the directory of the file that is currently executing. project: Use the root directory of the project.
output-dir	Output directory
lib-dir	HTML library (JS/CSS/etc.) directory
resources	Additional file resources to be copied to output directory
preview	Options for quarto preview (see Preview)
pre-render	Scripts to run as a pre-render step
post-render	Scripts to run as a post-render step

Preview

Specify options that control the behavior of quarto preview within the preview key. For example:

_quarto.yml

project:
  type: book
  output-dir: _book
  preview:
    port: 4200
    browser: false

Available preview options include:

port	Port to listen on (defaults to random value between 3000 and 8000)
host	Hostname to bind to (defaults to 127.0.0.1)
serve	Options for external preview server (see Serve)
browser	Open a web browser to view the preview (defaults to true)
watch-inputs	Re-render input files when they change (defaults to true)
navigate	Navigate the browser automatically when outputs are updated (defaults to true)
timeout	Time (in seconds) after which to exit if there are no active clients

Serve

If you are creating a project extension for another publishing system that includes its own preview server (for example, Hugo or Docusaurus) then use the preview: serve options to customize the behavior of the preview server.

_quarto.yml

project:
  type: book
    preview:
      serve:
        cmd: "hugo serve --port {port} --bind {host} --navigateToChanged"
        env:
          HUGO_RELATIVEURLS: "true"
        ready: "Web Server is available at"

cmd	Serve project preview using the specified command. Interpolate the --port into the command using {port}.
args	Additional command line arguments for preview command.
env	Environment variables to set for preview command.
ready	Regular expression for detecting when the server is ready.

See the Hugo and Docusaurus extension source code for example usages of preview: serve.

Book

Options that affect book output. Book options are specified under the book key. For example:

_quarto.yml

book:
  title: "My Book"
  image: opengraph.png
  page-navigation: true

title	Book title
subtitle	Book subtitle
author	Author or authors of the book
date	Book publication date
date-format	Format string for dates in the book
abstract	Book abstract
description	Description metadata for HTML version of book
references	Book references file
output-file	Base name for single-file output (e.g. PDF, ePub)
cover-image	Cover image (used in HTML and ePub formats)
cover-image-alt	Alternative text for cover image (used in HTML format)
sharing	Sharing buttons to include on navbar or sidebar (one or more of twitter, facebook, linkedin)
downloads	Download buttons for other formats to include on navbar or sidebar (one or more of pdf, epub, and docx)
tools	Custom tools for navbar or sidebar
doi	The Digital Object Identifier for this book.
abstract-url	A url to the abstract for this item.
accessed	Date the item has been accessed.
annote	Short markup, decoration, or annotation to the item (e.g., to indicate items included in a review); For descriptive text (e.g., in an annotated bibliography), use note instead
archive	Archive storing the item
archive-collection	Collection the item is part of within an archive.
archive-location	Storage location within an archive (e.g. a box and folder number).
archive-place	Geographic location of the archive.
authority	Issuing or judicial authority (e.g. “USPTO” for a patent, “Fairfax Circuit Court” for a legal case).
available-date	Date the item was initially available (e.g. the online publication date of a journal article before its formal publication date; the date a treaty was made available for signing).
call-number	Call number (to locate the item in a library).
chair	The person leading the session containing a presentation (e.g. the organizer of the container-title of a speech).
chapter-number	Chapter number (e.g. chapter number in a book; track number on an album).
citation-key	Identifier of the item in the input data file (analogous to BiTeX entrykey); Use this variable to facilitate conversion between word-processor and plain-text writing systems; For an identifer intended as formatted output label for a citation (e.g. “Ferr78”), use citation-label instead
citation-label	Label identifying the item in in-text citations of label styles (e.g. “Ferr78”); May be assigned by the CSL processor based on item metadata; For the identifier of the item in the input data file, use citation-key instead
collection-editor	Editor of the collection holding the item (e.g. the series editor for a book).
collection-number	Number identifying the collection holding the item (e.g. the series number for a book)
collection-title	Title of the collection holding the item (e.g. the series title for a book; the lecture series title for a presentation).
compiler	Person compiling or selecting material for an item from the works of various persons or bodies (e.g. for an anthology).
composer	Composer (e.g. of a musical score).
container-author	Author of the container holding the item (e.g. the book author for a book chapter).
container-title	Title of the container holding the item (e.g. the book title for a book chapter, the journal title for a journal article; the album title for a recording; the session title for multi-part presentation at a conference)
contributor	A minor contributor to the item; typically cited using “with” before the name when listed in a bibliography.
curator	Curator of an exhibit or collection (e.g. in a museum).
dimensions	Physical (e.g. size) or temporal (e.g. running time) dimensions of the item.
director	Director (e.g. of a film).
division	Minor subdivision of a court with a jurisdiction for a legal item
edition	(Container) edition holding the item (e.g. “3” when citing a chapter in the third edition of a book).
editor	The editor of the item.
editorial-director	Managing editor (“Directeur de la Publication” in French).
editor-translator	Combined editor and translator of a work. The citation processory must be automatically generate if editor and translator variables are identical; May also be provided directly in item data.
event-date	Date the event related to an item took place.
event-title	Name of the event related to the item (e.g. the conference name when citing a conference paper; the meeting where presentation was made).
event-place	Geographic location of the event related to the item (e.g. “Amsterdam, The Netherlands”).
executive-producer	Executive producer of the item (e.g. of a television series).
fulltext-url	A url to the full text for this item.
genre	Type, class, or subtype of the item (e.g. “Doctoral dissertation” for a PhD thesis; “NIH Publication” for an NIH technical report); Do not use for topical descriptions or categories (e.g. “adventure” for an adventure movie)
guest	Guest (e.g. on a TV show or podcast).
host	Host of the item (e.g. of a TV show or podcast).
id	A value which uniquely identifies this item.
illustrator	Illustrator (e.g. of a children’s book or graphic novel).
interviewer	Interviewer (e.g. of an interview).
isbn	International Standard Book Number (e.g. “978-3-8474-1017-1”).
issn	International Standard Serial Number.
issue	Issue number of the item or container holding the item (e.g. “5” when citing a journal article from journal volume 2, issue 5); Use volume-title for the title of the issue, if any.
issued	Date the item was issued/published.
jurisdiction	Geographic scope of relevance (e.g. “US” for a US patent; the court hearing a legal case).
keyword	Keyword(s) or tag(s) attached to the item.
language	The language of the item (used only for citation of the item). Should be entered as an ISO 639-1 two-letter language code (e.g. “en”, “zh”), optionally with a two-letter locale code (e.g. “de-DE”, “de-AT”). This does not change the language of the item, instead it documents what language the item uses (which may be used in citing the item).
license	The license information applicable to an item (e.g. the license an article or software is released under; the copyright information for an item; the classification status of a document)
locator	A cite-specific pinpointer within the item (e.g. a page number within a book, or a volume in a multi-volume work). Must be accompanied in the input data by a label indicating the locator type (see the Locators term list).
medium	Description of the item’s format or medium (e.g. “CD”, “DVD”, “Album”, etc.)
narrator	Narrator (e.g. of an audio book).
note	Descriptive text or notes about an item (e.g. in an annotated bibliography).
number	Number identifying the item (e.g. a report number).
number-of-pages	Total number of pages of the cited item.
number-of-volumes	Total number of volumes, used when citing multi-volume books and such.
organizer	Organizer of an event (e.g. organizer of a workshop or conference).
original-author	The original creator of a work (e.g. the form of the author name listed on the original version of a book; the historical author of a work; the original songwriter or performer for a musical piece; the original developer or programmer for a piece of software; the original author of an adapted work such as a book adapted into a screenplay)
original-date	Issue date of the original version.
original-publisher	Original publisher, for items that have been republished by a different publisher.
original-publisher-place	Geographic location of the original publisher (e.g. “London, UK”).
original-title	Title of the original version (e.g. “Война и мир”, the untranslated Russian title of “War and Peace”).
page	Range of pages the item (e.g. a journal article) covers in a container (e.g. a journal issue).
page-first	First page of the range of pages the item (e.g. a journal article) covers in a container (e.g. a journal issue).
page-last	Last page of the range of pages the item (e.g. a journal article) covers in a container (e.g. a journal issue).
part-number	Number of the specific part of the item being cited (e.g. part 2 of a journal article). Use part-title for the title of the part, if any.
part-title	Title of the specific part of an item being cited.
pdf-url	A url to the pdf for this item.
performer	Performer of an item (e.g. an actor appearing in a film; a muscian performing a piece of music).
pmcid	PubMed Central reference number.
pmid	PubMed reference number.
printing-number	Printing number of the item or container holding the item.
producer	Producer (e.g. of a television or radio broadcast).
public-url	A public url for this item.
publisher	The publisher of the item.
publisher-place	The geographic location of the publisher.
recipient	Recipient (e.g. of a letter).
reviewed-author	Author of the item reviewed by the current item.
reviewed-genre	Type of the item being reviewed by the current item (e.g. book, film).
reviewed-title	Title of the item reviewed by the current item.
scale	Scale of e.g. a map or model.
script-writer	Writer of a script or screenplay (e.g. of a film).
section	Section of the item or container holding the item (e.g. “§2.0.1” for a law; “politics” for a newspaper article).
series-creator	Creator of a series (e.g. of a television series).
source	Source from whence the item originates (e.g. a library catalog or database).
status	Publication status of the item (e.g. “forthcoming”; “in press”; “advance online publication”; “retracted”)
submitted	Date the item (e.g. a manuscript) was submitted for publication.
supplement-number	Supplement number of the item or container holding the item (e.g. for secondary legal items that are regularly updated between editions).
translator	Translator
type	The type of the item.
url	Uniform Resource Locator (e.g. “https://aem.asm.org/cgi/content/full/74/9/2766”)
version	Version of the item (e.g. “2.0.9” for a software program).
volume	Volume number of the item (e.g. “2” when citing volume 2 of a book) or the container holding the item (e.g. “2” when citing a chapter from volume 2 of a book). Use volume-title for the title of the volume, if any.
volume-title	Title of the volume of the item or container holding the item. Also use for titles of periodical special issues, special sections, and the like.
year-suffix	Disambiguating year suffix in author-date styles (e.g. “a” in “Doe, 1999a”).
description	Website description
favicon	The path to the favicon for this website
site-url	Base URL for published website
site-path	Path to site (defaults to /). Not required if you specify site-url.
repo-url	Base URL for website source code repository
repo-link-target	The value of the target attribute for repo links
repo-link-rel	The value of the rel attribute for repo links
repo-subdir	Subdirectory of repository containing website
repo-branch	Branch of website source code (defaults to main)
issue-url	URL to use for the ‘report an issue’ repository action.
repo-actions	Links to source repository actions (none or one or more of edit, source, issue)
reader-mode	Displays a ‘reader-mode’ tool which allows users to hide the sidebar and table of contents when viewing a page.
google-analytics	Enable Google Analytics for this website
cookie-consent	Quarto includes the ability to request cookie consent before enabling scripts that set cookies, using Cookie Consent. The user’s cookie preferences will automatically control Google Analytics (if enabled) and can be used to control custom scripts you add as well. For more information see Custom Scripts and Cookie Consent.
search	Site search (true or false to enable/disable, or provide custom Search Options
navbar	Navbar options (see Navbar)
sidebar	Sidebar options (see Sidebar)
body-header	Markdown to insert at the beginning of each page’s body (below the title and author block).
body-footer	Markdown to insert below each page’s body.
margin-header	Markdown to place above margin content (text or file path)
margin-footer	Markdown to place below margin content (text or file path)
page-navigation	Provide next and previous article links in footer
back-to-top-navigation	Provide a ‘back to top’ navigation button
bread-crumbs	Whether to show navigation breadcrumbs for pages more than 1 level deep
page-footer	Page footer. Text content or page footer definition.
image	Default site thumbnail image for twitter /open-graph
image-alt	Default site thumbnail image alt text for twitter /open-graph
comments
open-graph	Generate Open Graph metadata (see Open Graph options)
twitter-card	Generate Twitter Card metadata (see Twitter Card options)
other-links	A list of other links to appear below the TOC.
code-links	A list of code links to appear with this document.

Navbar

Options that define the top navigation bar for a book For example:

_quarto.yml

book:
  navbar:
    search: true

title	The navbar title. Uses the project title if none is specified.
logo	Path to a logo image that will be displayed to the left of the title.
logo-alt	Alternate text for the logo image.
logo-href	Target href from navbar logo / title. By default, the logo and title link to the root page of the site (/index.html).
background	The navbar’s background color (named or hex color).
foreground	The navbar’s foreground color (named or hex color).
search	Include a search box in the navbar.
pinned	Always show the navbar (keeping it pinned).
collapse	Collapse the navbar into a menu when the display becomes narrow.
collapse-below	The responsive breakpoint below which the navbar will collapse into a menu (sm, md, lg (default), xl, xxl).
left	List of items for the left side of the navbar (see Nav Items)
right	List of items for the right side of the navbar (see Nav Items)
toggle-position	The position of the collapsed navbar toggle when in responsive mode
tools-collapse	Collapse tools into the navbar menu when the display becomes narrow.

Nav Items

Nav items appear in the left or right key of navbar definitions, or contents key of sidebar definitions. For example:

_quarto.yml

book:
  navbar:
    right:
      - icon: github
        href: https://github.com/
        aria-label: GitHub

aria-label	Accessible label for the item.
href	Link to file contained with the project or external URL
icon	Name of bootstrap icon (e.g. github, twitter, share) See https://icons.getbootstrap.com/ for a list of available icons
menu	Submenu of navigation items
text	Text to display for item (defaults to the document title if not provided)
rel	Value for rel attribute. Multiple space-separated values are permitted. See https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/rel for a details.
target	Value for target attribute. See https://developer.mozilla.org/en-US/docs/Web/HTML/Element/a#attr-target for details.

Note that the icon option is available for items in the Navbar, however items in the Sidebar do not support the icon option.

Sidebar

Options that define the side navigation area for a book. For example:

_quarto.yml

book:
  sidebar:
    search: true

id	The identifier for this sidebar.
title	The sidebar title. Uses the project title if none is specified.
logo	Path to a logo image that will be displayed in the sidebar.
logo-alt	Alternate text for the logo image.
logo-href	Target href from navbar logo / title. By default, the logo and title link to the root page of the site (/index.html).
search	Include a search control in the sidebar.
tools	List of sidebar tools (see Sidebar Tools)
contents	List of navigation items to appear in the sidebar. Can also include section entries which in turn contain sub-lists of navigation items.
style	The style of sidebar (docked or floating).
background	The sidebar’s background color (named or hex color).
foreground	The sidebar’s foreground color (named or hex color).
border	Whether to show a border on the sidebar (defaults to true for ‘docked’ sidebars)
alignment	Alignment of the items within the sidebar (left, right, or center)
collapse-level	The depth at which the sidebar contents should be collapsed by default.
pinned	When collapsed, pin the collapsed sidebar to the top of the page.
header	Markdown to place above sidebar content (text or file path)
footer	Markdown to place below sidebar content (text or file path)

Sidebar Tools

Action buttons that appear on the sidebar. For example:

_quarto.yml

book:
  sidebar:
    tools:
      - icon: github
        href: https://github.com/

icon	Name of bootstrap icon (e.g. github, twitter, share) See https://icons.getbootstrap.com/ for a list of available icons
href	Link to file contained with the project or external URL
menu	Submenu of navigation items

Footer

Book page footer definition. For example:

_quarto.yml

book:
  page-footer:
    center: 
      - text: "About"
        href: about.qmd
      - text: "License"
        href: license.md
      - text: "Trademark"
        href: trademark.qmd

left	Footer left content
right	Footer right content
center	Footer center content
border	Footer border (true, false, or a border color)
background	Footer background color
foreground	Footer foreground color

Search

Search options are specified under the search key of book. For example:

_quarto.yml

book:
  search:
    location: navbar
    type: overlay

location	Location for search widget (navbar or sidebar)
type	Type of search UI (overlay or textbox)
limit	Number of matches to display (defaults to 20)
collapse-after	Matches after which to collapse additional results
copy-button	Provide button for copying search link
keyboard-shortcut	One or more keys that will act as a shortcut to launch search (single characters)
show-item-context	Whether to include search result parents when displaying items in search results (when possible).
algolia	Use an Algolia index for site search (see Algolia Options)

Algolia Options

You can use an Algolia index as the back end of book search. Specify Algolia options using the algolia sub-key of search, for example:

_quarto.yml

book:
  search:
    algolia:
      index-name: <my-index-name>
      application-id: <my-application-id>
      search-only-api-key: <my-search-only-api-key>

index-name	The name of the index to use when performing a search
application-id	The unique ID used by Algolia to identify your application
search-only-api-key	The Search-Only API key to use to connect to Algolia
analytics-events	Enable tracking of Algolia analytics events
show-logo	Enable the display of the Algolia logo in the search results footer.
index-fields	Fields to target for searches (see below for details)
params	Additional parameters to pass when executing a search

The index-fields option provides sub-fields within the Algolia index to target for searches:

href	Field that contains the URL of index entries
title	Field that contains the title of index entries
text	Field that contains the text of index entries
section	Field that contains the section of index entries

Social

Social metadata is provided as a subkey of book options. You can specify true to generate social metadata using a set of default option, or specify one or more Twitter or Open Graph specific options as enumerated below. For example:

_quarto.yml

book:
  open-graph: true
  twitter-card: 
    site: "@sitehandle"

Twitter Card

Set Twitter options under the twitter-card key:

_quarto.yml

book:
  twitter-card: 
    site: "@sitehandle"

title	The title of the page. Note that by default Quarto will automatically use the title metadata from the page. Specify this field if you’d like to override the title for this provider.
description	A short description of the content. Note that by default Quarto will automatically use the description metadata from the page. Specify this field if you’d like to override the description for this provider.
image	The path to a preview image for the content. By default, Quarto will use the image value from the format metadata. If you provide an image, you may also optionally provide an image-width and image-height.
image-alt	The alt text for the preview image. By default, Quarto will use the image-alt value from the format metadata. If you provide an image, you may also optionally provide an image-width and image-height.
image-width	Image width (pixels)
image-height	Image height (pixels)
card-style	Card style (summary or summary_large_image). If this is not provided, the best style will automatically selected based upon other metadata. You can learn more about Twitter Card styles here.
creator	@username of the content creator (must be a quoted string)
site	@username of the website (must be a quoted string)

Open Graph

Set Open Graph options under the open-graph key:

_quarto.yml

book:
  open-graph: 
    title: "Title for Open Graph"

title	The title of the page. Note that by default Quarto will automatically use the title metadata from the page. Specify this field if you’d like to override the title for this provider.
description	A short description of the content. Note that by default Quarto will automatically use the description metadata from the page. Specify this field if you’d like to override the description for this provider.
image	The path to a preview image for the content. By default, Quarto will use the image value from the format metadata. If you provide an image, you may also optionally provide an image-width and image-height.
image-alt	The alt text for the preview image. By default, Quarto will use the image-alt value from the format metadata. If you provide an image, you may also optionally provide an image-width and image-height.
image-width	Image width (pixels)
image-height	Image height (pixels)
locale	Locale of open graph metadata
site-name	Name that should be displayed for the overall site. If not explicitly provided in the open-graph metadata, Quarto will use the website or book title by default.

Comments

You can add commenting to your book using either Hypothesis, Utterances, or Giscus.

Hypothesis

Enable and configure Hypothesis commenting via comments key. For example:

_quarto.yml

website:
  comments: 
    hypothesis:
      theme: clean
      openSidebar: false

client-url	Override the default hypothesis client url with a custom client url.
openSidebar	Controls whether the sidebar opens automatically on startup.
showHighlights	Controls whether the in-document highlights are shown by default (always, whenSidebarOpen or never)
theme	Controls the overall look of the sidebar (classic or clean)
enableExperimentalNewNoteButton	Controls whether the experimental New Note button should be shown in the notes tab in the sidebar.
usernameUrl	Specify a URL to direct a user to, in a new tab. when they click on the annotation author link in the header of an annotation.
services	Array of service definitions
branding	Custom branding/colors to apply to UI
externalContainerSelector	A CSS selector specifying the containing element into which the sidebar iframe will be placed.
focus	User focused filter set for the available annotations on a page
requestConfigFromFrame	Specify a host iframe to request configuration from
assetRoot	The root URL from which assets are loaded.
sidebarAppUrl	The URL for the sidebar application which displays annotations.

For additional documentation on the Hypothesis options enumerated above, see the Hypothesis Publisher Config documentation.

Utterances

Enable and configure Utterances commenting via the comments key. For example:

_quarto.yml

website:
  comments: 
    utterances:
      repo: quarto-dev/quarto-web

repo	The Github repo that will be used to store comments.
label	The label that will be assigned to issues created by Utterances.
theme	The Github theme that should be used for Utterances (github-light, github-dark, github-dark-orange, icy-dark, dark-blue, photon-dark, body-light, or gruvbox-dark)
issue-term	How posts should be mapped to Github issues (pathname, url, title or og:title)

Giscus

Enable and configure usage of the Giscus app via the comments key. For example:

_quarto.yml

website:
  comments:
    giscus:
      repo: quarto-dev/quarto-web

repo	The Github repo that will be used to store comments. In order to work correctly, the repo must be public, with the giscus app installed, and the discussions feature must be enabled.
repo-id	The Github repository identifier. You can quickly find this by using the configuration tool at https://giscus.app. If this is not provided, Quarto will attempt to discover it at render time.
category	The discussion category where new discussions will be created. It is recommended to use a category with the Announcements type so that new discussions can only be created by maintainers and giscus.
category-id	The Github category identifier. You can quickly find this by using the configuration tool at https://giscus.app. If this is not provided, Quarto will attempt to discover it at render time.
mapping	The mapping between the page and the embedded discussion. pathname: The discussion title contains the page path url: The discussion title contains the page url title: The discussion title contains the page title og:title: The discussion title contains the og:title metadata value any other string or number: Any other strings will be passed through verbatim and a discussion title containing that value will be used. Numbers will be treated as a discussion number and automatic discussion creation is not supported.
reactions-enabled	Display reactions for the discussion’s main post before the comments.
loading	Specify loading: lazy to defer loading comments until the user scrolls near the comments container.
input-position	Place the comment input box above or below the comments.
theme	The giscus theme to use when displaying comments. Light and dark themes are supported. If a single theme is provided by name, it will be used as light and dark theme. To use different themes, use light and dark key: website: comments: giscus: theme: light: light # giscus theme used for light website theme dark: dark_dimmed # giscus theme used for dark website theme
language	The language that should be used when displaying the commenting interface.

Listings

Listings enable you to automatically generate the contents of a page (or region of a page) from a list of Quarto documents or other custom data. You can enable listings on a page using the listing option in the document front matter. For example, setting listing: default will generate a listing of all documents in the directory (with the exception of the current document):

---
title: "Listing Example"
listing: default
---

To customize the listing, specify additional options under the listing key:

---
title: "Listing Example"
listing: 
  contents: posts
  type: grid
  grid-columns: 2
---

id	The id of this listing. When the listing is rendered, it will place the contents into a div with this id. If no such div is defined on the page, a div with this id will be created and appended to the end of the page. If no id is provided for a listing, Quarto will synthesize one when rendering the page.
type	The type of listing to create. Choose one of: default: A blog style list of items table: A table of items grid: A grid of item cards custom: A custom template, provided by the template field
contents	The files or path globs of Quarto documents or YAML files that should be included in the listing.
sort	Sort items in the listing by these fields. The sort key is made up of a field name followed by a direction asc or desc. For example: date asc Use sort:false to use the unsorted original order of items.
max-items	The maximum number of items to include in this listing.
page-size	The number of items to display on a page.
sort-ui	Shows or hides the sorting control for the listing. To control the fields that will be displayed in the sorting control, provide a list of field names.
filter-ui	Shows or hides the filtering control for the listing. To control the fields that will be used to filter the listing, provide a list of field names. By default all fields of the listing will be used when filtering.
categories	Display item categories from this listing in the margin of the page. numbered: Category list with number of items unnumbered: Category list cloud: Word cloud style categories
feed	Create an RSS feed for this page using the items in this listing (see Feed).
date-format	The date format to use when displaying dates (e.g. d-M-yyy). Learn more about supported date formatting values here.
max-description-length	The maximum length (in characters) of the description displayed in the listing. Defaults to 175.
image-placeholder	The default image to use if an item in the listing doesn’t have an image.
image-lazy-loading	If false, images in the listing will be loaded immediately. If true, images will be loaded as they come into view.
image-align	In default type listings, whether to place the image on the right or left side of the post content (left or right).
image-height	The height of the image being displayed (a CSS height string). The width is automatically determined and the image will fill the rectangle without scaling (cropped to fill).
grid-columns	In grid type listings, the number of columns in the grid display. Defaults to 3.
grid-item-border	In grid type listings, whether to display a border around the item card. Defaults to true.
grid-item-align	In grid type listings, the alignment of the content within the card (left (default), right, or center).
table-striped	In table type listings, display the table rows with alternating background colors. Defaults to false.
table-hover	In table type listings, highlight rows of the table when the user hovers the mouse over them. Defaults to false.
template	The path to a custom listing template.
template-params	Parameters that are passed to the custom template.
fields	The list of fields to include in this listing.
field-display-names	A mapping that provides display names for specific fields. For example, to display the title column as ‘Report’ in a table listing you would write: listing: field-display-names: title: "Report"
field-types	Provides the date type for the field of a listing item. Unknown fields are treated as strings unless a type is provided. Valid types are date, number.
field-links	The list of fields to display as hyperlinks to the source document when the listing type is a table. By default, only the title or filename is displayed as a link.
field-required	Fields that items in this listing must have populated. If a listing is rendered and one more items in this listing is missing a required field, an error will occur and the render will.
include	Items with matching field values will be included in the listing.
exclude	Items with matching field values will be excluded from the listing.

Feed

Enable an RSS feed for your listing by including the feed option:

---
title: "Listing Example"
listing:
  contents: posts
  feed:
    items: 10
---

items	The number of items to include in your feed. Defaults to 20.
type	Whether to include full or partial content in the feed. full (default): Include the complete content of the document in the feed. partial: Include only the first paragraph of the document in the feed. metadata: Use only the title, description, and other document metadata in the feed.
title	The title for this feed. Defaults to the site title provided the Quarto project.
image	The path to an image for this feed. If not specified, the image for the page the listing appears on will be used, otherwise an image will be used if specified for the site in the Quarto project.
description	The description of this feed. If not specified, the description for the page the listing appears on will be used, otherwise the description of the site will be used if specified in the Quarto project.
language	The language of the feed. Omitted if not specified. See https://www.rssboard.org/rss-language-codes for a list of valid language codes.
categories	A list of categories for which to create separate RSS feeds containing only posts with that category
xml-stylesheet	The path to an XML stylesheet (XSL file) used to style the RSS feed.

About

Layout a simple about page for an individual or organization. Specify about page options under the about key in the document front matter:

---
title: About
about:
  template: jolla
  image: profile.jpg
  links:
    - icon: twitter
      text: twitter
      href: https://twitter.com
---

For more, see the About Pages documentation.

id	The target id of this about page. When the about page is rendered, it will place read the contents of a div with this id into the about template that you have selected (and replace the contents with the rendered about content). If no such div is defined on the page, a div with this id will be created and appended to the end of the page.
template	The template to use to layout this about page. Choose from: jolla trestles solana marquee broadside
image	The path to the main image on the about page. If not specified, the image provided for the document itself will be used.
image-alt	The alt text for the main image on the about page.
image-title	The title for the main image on the about page.
image-width	A valid CSS width for the about page image.
image-shape	The shape of the image on the about page. rectangle round rounded
links	Links (as navigation items) to display on the about page.