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156 lines
4.9 KiB
Markdown
156 lines
4.9 KiB
Markdown
---
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template: overrides/main.html
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---
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# Images
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While images are first-class citizens of Markdown and part of the core syntax,
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it can be difficult to work with them. Material for MkDocs makes working with
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images more comfortable, providing styles for image alignment and image
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captions.
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## Configuration
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This configuration adds the ability to align images, add captions to images
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(rendering them as figures), and mark large images for lazy-loading. Add the
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following lines to `mkdocs.yml`:
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``` yaml
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markdown_extensions:
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- attr_list
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- md_in_html
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```
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See additional configuration options:
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- [Attribute Lists]
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- [Markdown in HTML]
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[Attribute Lists]: ../setup/extensions/python-markdown.md#attribute-lists
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[Markdown in HTML]: ../setup/extensions/python-markdown.md#markdown-in-html
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## Usage
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### Image alignment
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When [Attribute Lists] is enabled, images can be aligned by adding the
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respective alignment directions via the `align` attribute, i.e. `align=left` or
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`align=right`:
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=== "Left"
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_Example_:
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``` markdown
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{ align=left }
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```
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_Result_:
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{ align=left width=300 }
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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla et euismod
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nulla. Curabitur feugiat, tortor non consequat finibus, justo purus auctor
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massa, nec semper lorem quam in massa.
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=== "Right"
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_Example_:
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``` markdown
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{ align=right }
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```
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_Result_:
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{ align=right width=300 }
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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla et euismod
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nulla. Curabitur feugiat, tortor non consequat finibus, justo purus auctor
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massa, nec semper lorem quam in massa.
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If there's insufficient space to render the text next to the image, the image
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will stretch to the full width of the viewport, e.g. on mobile viewports.
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??? question "Why is there no centered alignment?"
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The [`align`][align] attribute doesn't allow for centered alignment, which
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is why this option is not supported by Material for MkDocs.[^1] Instead,
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the [image captions] syntax can be used, as captions are optional.
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[^1]:
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You might also realize that the [`align`][align] attribute has been
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deprecated as of HTML5, so why use it anyways? The main reason is
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portability – it's still supported by all browsers and clients, and is very
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unlikely to be completely removed, as many older websites still use it. This
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ensures a consistent appearance when a Markdown file with these attributes
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is viewed outside of a website generated by Material for MkDocs.
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[align]: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/img#deprecated_attributes
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[image captions]: #image-captions
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### Image captions
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Sadly, the Markdown syntax doesn't provide native support for image captions,
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but it's always possible to use HTML. Using `figure` and `figcaption`, captions
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can be added to images.
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_Example_:
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```html
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<figure markdown> <!-- (1)! -->
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{ width="300" }
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<figcaption>Image caption</figcaption>
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</figure>
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```
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1. :man_raising_hand: Remember to enable the [Markdown in HTML] extension.
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_Result_:
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<figure markdown>
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![Placeholder]{ width="300" }
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<figcaption>Image caption</figcaption>
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</figure>
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[Placeholder]: https://dummyimage.com/600x400/f5f5f5/aaaaaa&text=–%20Image%20–
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[Markdown in HTML]: ../setup/extensions/python-markdown.md#markdown-in-html
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### Image lazy-loading
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Modern browsers provide [native support for lazy-loading images][lazy-loading]
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through the `loading=lazy` directive, which degrades to eager-loading in
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browsers without support:
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``` markdown
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{ loading=lazy }
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```
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[lazy-loading]: https://caniuse.com/#feat=loading-lazy-attr
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### Light and dark mode
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[:octicons-tag-24: Unreleased][Light and dark mode support] ·
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:octicons-beaker-24: Experimental
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If you added a [color palette toggle] and want to show different images for
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light and dark color schemes, you can append a `#only-light` or `#only-dark`
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hash fragment to the image URL:
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_Example_:
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``` markdown
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```
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_Result_:
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![Placeholder light]{ width="300" }
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![Placeholder dark]{ width="300" }
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[Light and dark mode support]: https://github.com/squidfunk/mkdocs-material/releases/tag/8.1.1
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[color palette toggle]: ../setup/changing-the-colors.md#color-palette-toggle
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[Placeholder light]: https://dummyimage.com/600x400/f5f5f5/aaaaaa&text=–%20Image%20–#only-light
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[Placeholder dark]: https://dummyimage.com/600x400/21222c/d5d7e2&text=–%20Image%20–#only-dark
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