mirror of
https://github.com/squidfunk/mkdocs-material.git
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926 lines
30 KiB
Markdown
926 lines
30 KiB
Markdown
---
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status: new
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---
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# Setting up social cards
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Material for MkDocs can automatically create beautiful social cards for your
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documentation, which appear as link previews on social media platforms. You
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can select from several [pre-designed layouts][default layouts] or create
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[custom layouts] to match your unique style and branding.
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---
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:fontawesome-brands-youtube:{ style="color: #EE0F0F" }
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__[How to build custom social cards]__ by @james-willett – :octicons-clock-24:
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24m – Learn how to create entirely custom social cards perfectly matching your
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branding for each page automatically!
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[How to build custom social cards]: https://www.youtube.com/watch?v=4OjnOc6ftJ8
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<figure markdown>
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[![Layout default variant]][Layout default variant]
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<figcaption markdown>
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Social card of our [formatting] reference
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</figcaption>
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</figure>
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[custom layouts]: #customization
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[formatting]: ../reference/formatting.md
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## Configuration
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### Built-in social plugin
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[:octicons-tag-24: 8.5.0][Social cards support] ·
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:octicons-cpu-24: Plugin ·
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:octicons-beaker-24: Experimental
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The built-in social plugin automatically generate a custom preview image for
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each page. Install all [dependencies for image processing][^1] and add the
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following lines to `mkdocs.yml`:
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[^1]:
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The awesome thing about social cards is that they are generated during
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build time and directly distributed with your documentation, no external
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services involved. While it would technically be simpler to generate
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social cards using a web browser and an automation framework like
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[Puppeteer], it would add further liabilities to the toolchain, with the
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potential to make build pipelines more complex and resource intense.
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For this reason, Material for MkDocs again follows its core principle of
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making it as simple and powerful as possible, providing an easy-to-use
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framework for building [custom layouts] using Python image processing
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libraries.
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``` yaml
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plugins:
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- social
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```
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> Note that [Insiders] contains a ground up rewrite of the social plugin that
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> generates images much more efficiently in parallel and allows to build
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> entirely [custom layouts].
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The following configuration options are available:
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[`enabled`](#+social.enabled){ #+social.enabled }
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: :octicons-milestone-24: Default: `true` – This option specifies whether
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the plugin is enabled when building your project. If you want to speed up
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local builds, you can use an [environment variable]:
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``` yaml
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plugins:
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- social:
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enabled: !ENV [CI, false]
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```
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[`concurrency`](#+social.concurrency){ #+social.concurrency }
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: [:octicons-tag-24: insiders-4.33.0][Insiders] · :octicons-milestone-24:
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Default: _number of CPUs_ – How many CPUs the plugin is allowed to use when
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generating social cards. With more CPUs, the plugin can do more work in the
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same time, thus complete generation faster. Concurrent processing can be
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disabled with:
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``` yaml
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plugins:
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- social:
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concurrency: 1
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```
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[Social cards support]: https://github.com/squidfunk/mkdocs-material/releases/tag/8.5.0
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[built-in plugins]: ../insiders/getting-started.md#built-in-plugins
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[dependencies for image processing]: dependencies/image-processing.md
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[Puppeteer]: https://github.com/puppeteer/puppeteer
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[Insiders]: ../insiders/index.md
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[environment variable]: https://www.mkdocs.org/user-guide/configuration/#environment-variables
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#### Social cards
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The following configuration options are available for card generation:
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[`cards`](#+social.cards){ #+social.cards }
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: :octicons-milestone-24: Default: `true` – This option specifies whether
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to generate social card images. If you want to switch the plugin off, e.g.
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for local builds, you can use an [environment variable]:
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``` yaml
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plugins:
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- social:
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cards: !ENV [CI, false]
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```
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[`cards_dir`](#+social.cards_dir){ #+social.cards_dir }
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: :octicons-milestone-24: Default: `assets/images/social` – This option
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specifies where the generated social cards will be stored. While it's
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usually not necessary to change this option, change it with:
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``` yaml
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plugins:
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- social:
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cards_dir: assets/images/social
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```
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<div class="mdx-deprecated" markdown>
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[`cards_color`](#+social.cards_color){ #+social.cards_color } – <small>:material-trash-can: Deprecated, use [`cards_layout_options`][layout options]</small>
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: :octicons-milestone-24: Default: [`theme.palette.primary`][primary color] –
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This option specifies the colors for the background `fill` and foreground
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`text` when generating the social card:
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``` yaml
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plugins:
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- social:
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cards_color:
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fill: "#0FF1CE"
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text: "#FFFFFF"
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```
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[`cards_font`](#+social.cards_font){ #+social.cards_font } – <small>:material-trash-can: Deprecated, use [`cards_layout_options`][layout options]</small>
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: :octicons-milestone-24: Default: [`theme.font.text`][font] – This option
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specifies which font to use for rendering the social card, which can be
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any font hosted on [Google Fonts]:
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``` yaml
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plugins:
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- social:
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cards_font: Ubuntu
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```
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</div>
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[`cards_layout_dir`](#+social.cards_layout_dir){ #+social.cards_layout_dir }
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: [:octicons-tag-24: insiders-4.33.0][Insiders] · :octicons-milestone-24:
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Default: _none_ – This option specifies where the social plugin should try
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to resolve [custom layouts] from, taking precedence over the included
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layouts:
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``` yaml
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plugins:
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- social:
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cards_layout_dir: layouts
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```
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[`cards_layout`](#+social.cards_layout){ #+social.cards_layout } :material-alert-decagram:{ .mdx-pulse title="Added on May 8, 2023" }
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: [:octicons-tag-24: insiders-4.33.0][Insiders] · :octicons-milestone-24:
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Default: `default` – Layout specification the social card should use. The
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plugin includes the following layouts which make use of the [color palette]
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and [font]:
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=== "`default`"
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``` yaml
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plugins:
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- social:
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cards_layout: default
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```
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This layout uses the configured [primary color] as a background:
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[![Layout default]][Layout default]
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=== "`default/variant`"
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``` yaml
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plugins:
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- social:
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cards_layout: default/variant
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```
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This layout includes the [page icon] as a watermark, if defined:
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[![Layout default variant]][Layout default variant]
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=== "`default/accent`"
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``` yaml
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plugins:
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- social:
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cards_layout: default/accent
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```
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This layout uses the configured [accent color] as a background:
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[![Layout default accent]][Layout default accent]
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=== "`default/invert`"
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``` yaml
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plugins:
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- social:
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cards_layout: default/invert
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```
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This layout inverts the background and foreground colors:
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[![Layout default invert]][Layout default invert]
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All [`default`][default layouts] layouts make use of the following
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[template variables]:
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- :material-page-layout-header: – `config.site_name`
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- :material-page-layout-body: – `page.meta.title` or `page.title`
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- :material-page-layout-footer: – `page.meta.description` or `config.site_description`
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- :material-page-layout-sidebar-right: – `theme.logo` or `theme.icon.logo`
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[`cards_layout_options`](#+social.cards_layout_options){ #+social.cards_layout_options }
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: [:octicons-tag-24: 9.1.10][Layout options support] · :octicons-milestone-24:
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Default: _none_ – This option allows to set [parameters] as provided by
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the layout specification. For [custom layouts], this key can be used to
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provide layout-specific options, making layouts entirely configurable.
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---
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All [`default`][default layouts] layouts expose the following parameters:
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[`background_color`](#+social.cards_layout_options.background_color){ #+social.cards_layout_options.background_color }
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: Set a background color, which can be a [CSS color keyword], or a 3, 4, 6
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or 8 letter HEX color code. Alpha channels are supported as well:
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``` yaml
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plugins:
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- social:
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cards_layout_options:
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background_color: "#0FF1CE"
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```
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[`background_image`](#+social.cards_layout_options.background_image){ #+social.cards_layout_options.background_image }
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: [:octicons-tag-24: insiders-4.33.0][Insiders] – Set a background image.
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If a `background_color` is set, like for the
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[`default`][default layouts] layouts, the image is tinted (overlayed)
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with the color. Thus, the background color must be (partially)
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transparent for the image to become visible:
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``` yaml
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plugins:
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- social:
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cards_layout_options:
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background_color: "#00000000"
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background_image: layouts/background.png
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```
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The path of the image must be defined relative to the project root.
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[`color`](#+social.cards_layout_options.color){ #+social.cards_layout_options.color }
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: Set a foreground color, which can be a [CSS color keyword], or a 3, 4, 6
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or 8 letter HEX color code. The color is primarily used to tint text and
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icons:
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``` yaml
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plugins:
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- social:
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cards_layout_options:
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color: "#0FF1CE"
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```
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[`font_family`](#+social.cards_layout_options.font_family){ #+social.cards_layout_options.font_family }
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: Set a font family. This overrides the [font] that is set as part of the
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theme configuration. The [built-in social plugin] will automatically
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download the font from [Google Fonts]:
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``` yaml
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plugins:
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- social:
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cards_layout_options:
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font_family: Ubuntu
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```
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[`cards_include`](#+privacy.cards_include){ #+privacy.cards_include }
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: [:octicons-tag-24: insiders-4.35.0][Insiders] · :octicons-milestone-24:
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Default: _none_ – This option allows to only generate social cards for
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certain subsections of your documentation, e.g. to generate different
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cards for different subfolders with multiple instances of the plugin:
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``` yaml
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plugins:
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- social:
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cards_include:
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- blog/*
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```
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[`cards_exclude`](#+privacy.cards_exclude){ #+privacy.cards_exclude }
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: :octicons-milestone-24: Default: _none_ – This option allows to exclude
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certain subsections of your documentation from generating social cards:
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``` yaml
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plugins:
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- social:
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cards_exclude:
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- changelog/*.md
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```
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[color palette]: ./changing-the-colors.md#color-palette
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[primary color]: ./changing-the-colors.md#primary-color
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[accent color]: ./changing-the-colors.md#accent-color
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[font]: ./changing-the-fonts.md#regular-font
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[Google Fonts]: https://fonts.google.com/
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[layout options]: #+social.cards_layout_options
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[page icon]: ../reference/index.md#setting-the-page-icon
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[Layout default]: ../assets/screenshots/social-cards.png
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[Layout default variant]: ../assets/screenshots/social-cards-variant.png
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[Layout default accent]: ../assets/screenshots/social-cards-accent.png
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[Layout default invert]: ../assets/screenshots/social-cards-invert.png
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[template variables]: https://www.mkdocs.org/dev-guide/themes/#template-variables
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[parameters]: #parameters
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[default layouts]: #+social.cards_layout
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[CSS color keyword]: https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#color_keywords
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[Layout options support]: https://github.com/squidfunk/mkdocs-material/releases/tag/9.1.10
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#### Debugging
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The following configuration options are available for debugging:
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[`debug`](#+social.debug){ #+social.debug }
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: [:octicons-tag-24: insiders-4.33.0][Insiders] · :octicons-milestone-24:
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Default: `false` – This option enables a special debug mode, which renders
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each layer with an outline and its `x` and `y` offset in order to understand
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how the layout is composed, and optionally renders a grid for easier
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alignment:
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||
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``` yaml
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plugins:
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- social:
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debug: true
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```
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=== "With debug mode"
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[![Debug mode enabled]][Debug mode enabled]
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=== "Without"
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[![Debug mode disabled]][Debug mode disabled]
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[Debug mode enabled]: ../assets/screenshots/social-cards-debug.png
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[Debug mode disabled]: ../assets/screenshots/social-cards-variant.png
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[`debug_on_build`](#+social.debug_on_build){ #+social.debug_on_build }
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||
: [:octicons-tag-24: insiders-4.34.1][Insiders] · :octicons-milestone-24:
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Default: `false` – Whether debug mode should be automatically disabled
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[when building your site] with `mkdocs build`. It can be changed with:
|
||
|
||
``` yaml
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plugins:
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- social:
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debug_on_build: true
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```
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||
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This setting is just intended to be a safety net, so that when building
|
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your site social cards definitely won't contain the dot grid or layer
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outlines by accident.
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[`debug_grid`](#+social.debug_grid){ #+social.debug_grid }
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||
: [:octicons-tag-24: insiders-4.33.0][Insiders] · :octicons-milestone-24:
|
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Default: `true` – This option enables the rendering of a dot grid when
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[`debug`][debug] is enabled (see screenshot above). The grid can be switched
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off with:
|
||
|
||
``` yaml
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plugins:
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- social:
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debug_grid: false
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```
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||
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[`debug_grid_step`](#+social.debug_grid_step){ #+social.debug_grid_step }
|
||
|
||
: [:octicons-tag-24: insiders-4.33.0][Insiders] · :octicons-milestone-24:
|
||
Default: `32` – This option specifies the step size of the grid in pixels,
|
||
if enabled, which can be used to align elements. It can be changed with:
|
||
|
||
``` yaml
|
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plugins:
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- social:
|
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debug_grid_step: 64
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```
|
||
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||
[`debug_color`](#+social.debug_color){ #+social.debug_color }
|
||
|
||
: [:octicons-tag-24: insiders-4.33.0][Insiders] · :octicons-milestone-24:
|
||
Default: `grey` – This option sets the color of the layer outlines and
|
||
the grid which are rendered when [`debug`][debug] is enabled. It can be
|
||
changed with:
|
||
|
||
``` yaml
|
||
plugins:
|
||
- social:
|
||
debug_color: yellow
|
||
```
|
||
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||
[debug]: #+social.debug
|
||
[when building your site]: ../creating-your-site.md#building-your-site
|
||
|
||
#### Caching
|
||
|
||
The [built-in social plugin] implements an intelligent caching mechanism,
|
||
ensuring that social cards are only re-generated when they're not contained in
|
||
the cache or their contents change. If any of the variables used in a layout
|
||
changes, the plugin will detect it and re-generate the card.
|
||
|
||
The following configuration options are available for caching:
|
||
|
||
[`cache`](#+social.cache){ #+social.cache }
|
||
|
||
: [:octicons-tag-24: insiders-4.33.0][Insiders] · :octicons-milestone-24:
|
||
Default: `true` – Whether the plugin queries its cache for an existing
|
||
artifact before starting a generation job. It's normally not necessary to
|
||
change this setting, except for when debugging the plugin itself. Caching
|
||
can be disabled with:
|
||
|
||
``` yaml
|
||
plugins:
|
||
- social:
|
||
cache: false
|
||
```
|
||
|
||
[`cache_dir`](#+social.cache_dir){ #+social.cache_dir }
|
||
|
||
: :octicons-milestone-24: Default: `.cache/plugins/social` – This option
|
||
specifies the file system location of the plugin's cache. It's normally not
|
||
necessary to change this setting, except for when debugging the plugin
|
||
itself. The cache directory can be changed with:
|
||
|
||
``` yaml
|
||
plugins:
|
||
- social:
|
||
cache_dir: .cache/plugins/social
|
||
```
|
||
|
||
By default, all built-in plugins that implement caching will create a
|
||
`.cache` directory in the same folder your `mkdocs.yml` resides, and create
|
||
subfolders to not interfere with each other. If you use multiple instances
|
||
of this plugin, it could be necessary to change this setting.
|
||
|
||
[built-in social plugin]: #built-in-social-plugin
|
||
[publishing guide]: ../publishing-your-site.md#with-github-actions
|
||
|
||
## Usage
|
||
|
||
If you want to adjust the title or set a custom description for the social card,
|
||
you can set the front matter `title` and `description` properties, which take
|
||
precedence over the default values.
|
||
|
||
- [Changing the title]
|
||
- [Changing the description]
|
||
|
||
[Changing the title]: ../reference/index.md#setting-the-page-title
|
||
[Changing the description]: ../reference/index.md#setting-the-page-description
|
||
|
||
|
||
### Choosing a font
|
||
|
||
Some fonts do not contain CJK characters, like for example the
|
||
[default font, `Roboto`][font]. In case your `site_name`, `site_description`, or
|
||
page title contain CJK characters, choose another font from [Google Fonts] which
|
||
comes with CJK characters, e.g. one from the `Noto Sans` font family:
|
||
|
||
=== "Chinese (Simplified)"
|
||
|
||
``` yaml
|
||
plugins:
|
||
- social:
|
||
cards_font: Noto Sans SC
|
||
```
|
||
|
||
=== "Chinese (Traditional)"
|
||
|
||
``` yaml
|
||
plugins:
|
||
- social:
|
||
cards_font: Noto Sans TC
|
||
```
|
||
|
||
=== "Japanese"
|
||
|
||
``` yaml
|
||
plugins:
|
||
- social:
|
||
cards_font: Noto Sans JP
|
||
```
|
||
|
||
=== "Korean"
|
||
|
||
``` yaml
|
||
plugins:
|
||
- social:
|
||
cards_font: Noto Sans KR
|
||
```
|
||
|
||
## Customization
|
||
|
||
[:octicons-heart-fill-24:{ .mdx-heart } Sponsors only][Insiders]{ .mdx-insiders } ·
|
||
[:octicons-tag-24: insiders-4.33.0][Insiders] ·
|
||
:octicons-beaker-24: Experimental
|
||
|
||
[Insiders] ships a ground up rewrite of the [built-in social plugin] and
|
||
introduces a brand new layout system based on a combination of YAML and
|
||
[Jinja templates] – the same engine Material for MkDocs uses for HTML
|
||
templating – allowing for the creation of complex custom layouts:
|
||
|
||
<div class="mdx-social">
|
||
<div class="mdx-social__layer">
|
||
<div class="mdx-social__image">
|
||
<span class="mdx-social__label">Layer 0</span>
|
||
<img src="../../assets/screenshots/social-cards-layer-0.png" />
|
||
</div>
|
||
</div>
|
||
<div class="mdx-social__layer">
|
||
<div class="mdx-social__image">
|
||
<span class="mdx-social__label">Layer 1</span>
|
||
<img src="../../assets/screenshots/social-cards-layer-1.png" />
|
||
</div>
|
||
</div>
|
||
<div class="mdx-social__layer">
|
||
<div class="mdx-social__image">
|
||
<span class="mdx-social__label">Layer 2</span>
|
||
<img src="../../assets/screenshots/social-cards-layer-2.png" />
|
||
</div>
|
||
</div>
|
||
<div class="mdx-social__layer">
|
||
<div class="mdx-social__image">
|
||
<span class="mdx-social__label">Layer 3</span>
|
||
<img src="../../assets/screenshots/social-cards-layer-3.png" />
|
||
</div>
|
||
</div>
|
||
<div class="mdx-social__layer">
|
||
<div class="mdx-social__image">
|
||
<span class="mdx-social__label">Layer 4</span>
|
||
<img src="../../assets/screenshots/social-cards-layer-4.png" />
|
||
</div>
|
||
</div>
|
||
<div class="mdx-social__layer">
|
||
<div class="mdx-social__image">
|
||
<span class="mdx-social__label">Layer 5</span>
|
||
<img src="../../assets/screenshots/social-cards-layer-5.png" />
|
||
</div>
|
||
</div>
|
||
</div>
|
||
|
||
Social cards are composed of layers, analogous to how they are represented in
|
||
graphic design software such as Adobe Photoshop. As many layers are common
|
||
across the cards generated for each page (e.g., backgrounds or logos), the
|
||
built-in social plugin can automatically deduplicate layers and render them
|
||
just once, substantially accelerating card generation. The generated cards are
|
||
cached to ensure they are only regenerated when their contents change.
|
||
|
||
Layouts are written in YAML syntax. Before starting to create a custom layout,
|
||
it is a good idea to [study the pre-designed layouts] (link to [Insiders]
|
||
repository), in order to get a better understanding of how they work. Then,
|
||
create a new layout and reference it in `mkdocs.yml`:
|
||
|
||
=== ":octicons-file-code-16: `layouts/custom.yml`"
|
||
|
||
``` yaml
|
||
size: { width: 1200, height: 630 }
|
||
layers: []
|
||
```
|
||
|
||
=== ":octicons-file-code-16: `mkdocs.yml`"
|
||
|
||
``` yaml
|
||
plugins:
|
||
- social:
|
||
cards_layout_dir: layouts
|
||
cards_layout: custom
|
||
debug: true
|
||
```
|
||
|
||
Note that the `.yml` file extension should be omitted. Next, run `mkdocs serve`,
|
||
and see how the `.cache` directory is populated with the generated cards. Open
|
||
any card in your editor, so you can see your changes immediately. Since we
|
||
haven't defined any layers, the cards are transparent.
|
||
|
||
The following sections explain how to create custom layouts.
|
||
|
||
[Jinja templates]: https://jinja.palletsprojects.com/en/3.1.x/
|
||
[study the pre-designed layouts]: https://github.com/squidfunk/mkdocs-material-insiders/tree/master/src/plugins/social/layouts
|
||
|
||
### Size and offset
|
||
|
||
Each layer has an associated size and offset, which is defined in pixels. The
|
||
`size` is defined by a `width` and `height` property, and the `offset` by `x`
|
||
and `y` properties:
|
||
|
||
``` yaml
|
||
size: { width: 1200, height: 630 }
|
||
layers:
|
||
- size: { width: 1200, height: 630 }
|
||
offset: { x: 0, y: 0 }
|
||
```
|
||
|
||
If the `size` is omitted, it defaults to the size of the layout. If the `offset`
|
||
is omitted, it defaults to the top left corner, which is the defaut `origin`.
|
||
Saving the layout and reloading renders:
|
||
|
||
![Layer size]
|
||
|
||
The layer outline and grid are visible because we enabled [`debug`][debug]
|
||
mode in `mkdocs.yml`. The top left shows the layer index and offset, which is
|
||
useful for alignment and composition.
|
||
|
||
[Layer size]: ../assets/screenshots/social-cards-layer-size.png
|
||
|
||
#### Origin
|
||
|
||
[:octicons-tag-24: insiders-4.35.0][Insiders] ·
|
||
:octicons-beaker-24: Experimental
|
||
|
||
The `origin` for the `x` and `y` values can be changed, so that the layer is
|
||
aligned to one of the edges or corners of the layout, e.g., to the bottom right
|
||
corner of the layout:
|
||
|
||
``` yaml hl_lines="5"
|
||
size: { width: 1200, height: 630 }
|
||
layers:
|
||
- size: { width: 1200, height: 630 }
|
||
offset: { x: 0, y: 0 }
|
||
origin: end bottom
|
||
```
|
||
|
||
The following table shows the supported values:
|
||
|
||
<figure markdown>
|
||
|
||
| Origin | | |
|
||
| -------------- | --------------- | ------------ |
|
||
| :material-arrow-top-left: `start top` | :material-arrow-up: `center top` | :material-arrow-top-right: `end top` |
|
||
| :material-arrow-left: `start center` | :material-circle-small: `center` | :material-arrow-right: `end center` |
|
||
| :material-arrow-bottom-left: `start bottom` | :material-arrow-down: `center bottom` | :material-arrow-bottom-right: `end bottom` |
|
||
|
||
<figcaption>
|
||
Supported values for origin
|
||
</figcaption>
|
||
</figure>
|
||
|
||
### Backgrounds
|
||
|
||
Each layer can be assigned a background color and image. If both are given, the
|
||
color is rendered on top of the image, allowing for semi-transparent, tinted
|
||
backgrounds:
|
||
|
||
=== "Background color"
|
||
|
||
``` yaml
|
||
size: { width: 1200, height: 630 }
|
||
layers:
|
||
- background:
|
||
color: "#4051b5"
|
||
```
|
||
|
||
![Layer background color]
|
||
|
||
=== "Background image"
|
||
|
||
``` yaml
|
||
size: { width: 1200, height: 630 }
|
||
layers:
|
||
- background:
|
||
image: layouts/background.jpg
|
||
```
|
||
|
||
![Layer background image]
|
||
|
||
=== "Background image, tinted"
|
||
|
||
``` yaml
|
||
size: { width: 1200, height: 630 }
|
||
layers:
|
||
- background:
|
||
image: layouts/background.jpg
|
||
color: "#4051b5ee" # (1)!
|
||
```
|
||
|
||
1. The color value can be set to a [CSS color keyword], or a 3, 4, 6 or 8
|
||
letter HEX color code, allowing for semi-transparent layers.
|
||
|
||
![Layer background]
|
||
|
||
Background images are automatically scaled to fit the layer while preserving
|
||
aspect-ratio. Notice how we omitted `size` and `offset`, because we want to
|
||
fill the entire area of the social card.
|
||
|
||
[Layer background color]: ../assets/screenshots/social-cards-layer-background-color.png
|
||
[Layer background image]: ../assets/screenshots/social-cards-layer-background-image.png
|
||
[Layer background]: ../assets/screenshots/social-cards-layer-background.png
|
||
|
||
### Typography
|
||
|
||
Now, we can add dynamic typography that is sourced from Markdown files - this is
|
||
the actual raison d'être of the [built-in social plugin]. [Jinja templates] are
|
||
used to render a text string that is then added to the image:
|
||
|
||
``` yaml
|
||
size: { width: 1200, height: 630 }
|
||
layers:
|
||
- size: { width: 832, height: 310 }
|
||
offset: { x: 62, y: 160 }
|
||
typography:
|
||
content: "{{ page.title }}" # (1)!
|
||
align: start
|
||
color: white
|
||
line:
|
||
amount: 3
|
||
height: 1.25
|
||
font:
|
||
family: Roboto
|
||
style: Bold
|
||
```
|
||
|
||
1. The following variables can be used in [Jinja templates]:
|
||
|
||
- [`config.*`][config variable]
|
||
- [`page.*`][page variable]
|
||
- [`layout.*`][layout options]
|
||
|
||
The author is free in defining `layout.*` options, which can be used to pass
|
||
arbitrary data to the layout from `mkdocs.yml`.
|
||
|
||
This renders a text layer with the title of the page with a line height of 1.25,
|
||
and a maximum number of 3 lines. The plugin automatically computes the font size
|
||
from the line height, the number of lines, and font metrics like ascender and
|
||
descender.[^2] This renders:
|
||
|
||
[^2]:
|
||
If the plugin would require the author to specify the font size and line
|
||
height manually, it would be impossible to guarantee that the text fits
|
||
into the layer. For this reason we implemented a declarative approach,
|
||
where the author specifies the desired line height and number of lines, and
|
||
the plugin computes the font size automatically.
|
||
|
||
![Layer typography]
|
||
|
||
[config variable]: https://www.mkdocs.org/dev-guide/themes/#config
|
||
[page variable]: https://www.mkdocs.org/dev-guide/themes/#page
|
||
[Layer typography]: ../assets/screenshots/social-cards-layer-typography.png
|
||
|
||
#### Overflow
|
||
|
||
If the text overflows the layer, there are two possible behaviors: either the
|
||
text is automatically truncated and shortened with an ellipsis, or the text is
|
||
automatically scaled down to fit the layer:
|
||
|
||
``` { .markdown .no-copy }
|
||
# If we use a very long headline, we can see how the text will be truncated
|
||
```
|
||
|
||
=== ":octicons-ellipsis-16: Ellipsis"
|
||
|
||
![Layer typography ellipsis]
|
||
|
||
=== ":material-arrow-collapse: Shrink"
|
||
|
||
![Layer typography shrink]
|
||
|
||
While truncating with an ellipsis is the default, auto-shrinking can be enabled
|
||
by setting `overflow` to `shrink`:
|
||
|
||
``` yaml hl_lines="7"
|
||
size: { width: 1200, height: 630 }
|
||
layers:
|
||
- size: { width: 832, height: 310 }
|
||
offset: { x: 62, y: 160 }
|
||
typography:
|
||
content: "{{ page.title }}"
|
||
overflow: shrink
|
||
align: start
|
||
color: white
|
||
line:
|
||
amount: 3
|
||
height: 1.25
|
||
font:
|
||
family: Roboto
|
||
style: Bold
|
||
```
|
||
|
||
[Layer typography ellipsis]: ../assets/screenshots/social-cards-layer-typography-ellipsis.png
|
||
[Layer typography shrink]: ../assets/screenshots/social-cards-layer-typography-shrink.png
|
||
|
||
#### Alignment
|
||
|
||
Text can be aligned to all corners and edges of the layer. For example, if we
|
||
want to align the text to the middle of the layer, we can set `align` to `start center`, which will render as:
|
||
|
||
![Layer typography align]
|
||
|
||
[Layer typography align]: ../assets/screenshots/social-cards-layer-typography-align.png
|
||
|
||
The following table shows the supported values:
|
||
|
||
<figure markdown>
|
||
|
||
| Alignment | | |
|
||
| -------------- | --------------- | ------------ |
|
||
| :material-arrow-top-left: `start top` | :material-arrow-up: `center top` | :material-arrow-top-right: `end top` |
|
||
| :material-arrow-left: `start center` | :material-circle-small: `center` | :material-arrow-right: `end center` |
|
||
| :material-arrow-bottom-left: `start bottom` | :material-arrow-down: `center bottom` | :material-arrow-bottom-right: `end bottom` |
|
||
|
||
<figcaption>
|
||
Supported values for text alignment
|
||
</figcaption>
|
||
</figure>
|
||
|
||
#### Font
|
||
|
||
The [built-in social plugin] integrates with [Google Fonts] and will
|
||
automatically download the font files for you. The `font` property accepts a
|
||
`family` and `style` property, where the `family` must be set to the name of the
|
||
font, and the `style` to one of the supported font styles. For example, setting
|
||
`family` to `Roboto` will automatically download the following files:
|
||
|
||
``` { .sh .no-copy #example }
|
||
.cache/plugins/social/fonts
|
||
└─ Roboto/
|
||
├─ Black.ttf
|
||
├─ Black Italic.ttf
|
||
├─ Bold.ttf
|
||
├─ Bold Italic.ttf
|
||
├─ Italic.ttf
|
||
├─ Light.ttf
|
||
├─ Light Italic.ttf
|
||
├─ Medium.ttf
|
||
├─ Medium Italic.ttf
|
||
├─ Regular.ttf
|
||
├─ Thin.ttf
|
||
└─ Thin Italic.ttf
|
||
```
|
||
|
||
In that case, the author can use `Bold` or `Medium Italic` as the `style`. If
|
||
the font style specified in the layer is not part of the font family, the
|
||
font always falls back to `Regular` and prints a warning in [`debug`][debug]
|
||
mode, as `Regular` is included with all font families.
|
||
|
||
### Icons
|
||
|
||
Authors can leverage the full range of icons that are shipped with Material for
|
||
MkDocs, or even provide custom icons by using theme extension and going through
|
||
the process described in the guide on [additional icons]. Icons can even be
|
||
tinted by using the `color` property:
|
||
|
||
``` yaml
|
||
size: { width: 1200, height: 630 }
|
||
layers:
|
||
- background:
|
||
color: "#4051b5"
|
||
- size: { width: 144, height: 144 }
|
||
offset: { x: 992, y: 64 }
|
||
icon:
|
||
value: material/cat
|
||
color: white
|
||
```
|
||
|
||
This will render the icon in the top right corner of the social card:
|
||
|
||
![Layer icon]
|
||
|
||
The possibilities are endless. For example, icons can be used to draw shapes
|
||
like circles:
|
||
|
||
``` yaml
|
||
size: { width: 1200, height: 630 }
|
||
layers:
|
||
- background:
|
||
color: "#4051b5"
|
||
- size: { width: 2400, height: 2400 }
|
||
offset: { x: -1024, y: 64 }
|
||
icon:
|
||
value: material/circle
|
||
color: "#5c6bc0"
|
||
- size: { width: 1800, height: 1800 }
|
||
offset: { x: 512, y: -1024 }
|
||
icon:
|
||
value: material/circle
|
||
color: "#3949ab"
|
||
```
|
||
|
||
This will add two circles to the background:
|
||
|
||
![Layer icon circles]
|
||
|
||
__Are you missing something? Please [open a discussion] and let us know!__
|
||
|
||
[additional icons]: ./changing-the-logo-and-icons.md#additional-icons
|
||
[Layer icon]: ../assets/screenshots/social-cards-layer-icon.png
|
||
[Layer icon circles]: ../assets/screenshots/social-cards-layer-icon-circles.png
|
||
[open a discussion]: https://github.com/squidfunk/mkdocs-material/discussions/new
|