[Docs Site] Bump astro from 5.9.3 to 5.10.0

[dependabot]

Bumps astro from 5.9.3 to 5.10.0.

Release notes

Sourced from astro's releases.

[email protected]

Minor Changes

• #13917 e615216 Thanks @​ascorbic! - Adds a new priority attribute for Astro's image components.

  This change introduces a new priority option for the <Image /> and <Picture /> components, which automatically sets the loading, decoding, and fetchpriority attributes to their optimal values for above-the-fold images which should be loaded immediately.

  It is a boolean prop, and you can use the shorthand syntax by simply adding priority as a prop to the <Image /> or <Picture /> component. When set, it will apply the following attributes:

  • loading="eager"
  • decoding="sync"
  • fetchpriority="high"

  The individual attributes can still be set manually if you need to customize your images further.

  By default, the Astro <Image /> component generates <img> tags that lazy-load their content by setting loading="lazy" and decoding="async". This improves performance by deferring the loading of images that are not immediately visible in the viewport, and gives the best scores in performance audits like Lighthouse.

  The new priority attribute will override those defaults and automatically add the best settings for your high-priority assets.

  This option was previously available for experimental responsive images, but now it is a standard feature for all images.

  Usage

  <Image src="/path/to/image.jpg" alt="An example image" priority />

  [!Note] You should only use the priority option for images that are critical to the initial rendering of the page, and ideally only one image per page. This is often an image identified as the LCP element when running Lighthouse tests. Using it for too many images will lead to performance issues, as it forces the browser to load those images immediately, potentially blocking the rendering of other content.

• #13917 e615216 Thanks @​ascorbic! - The responsive images feature introduced behind a flag in v5.0.0 is no longer experimental and is available for general use.

  The new responsive images feature in Astro automatically generates optimized images for different screen sizes and resolutions, and applies the correct attributes to ensure that images are displayed correctly on all devices.

  Enable the image.responsiveStyles option in your Astro config. Then, set a layout attribute on any or component, or configure a default image.layout, for instantly responsive images with automatically generated srcset and sizes attributes based on the image's dimensions and the layout type.

  Displaying images correctly on the web can be challenging, and is one of the most common performance issues seen in sites. This new feature simplifies the most challenging part of the process: serving your site visitor an image optimized for their viewing experience, and for your website's performance.

  For full details, see the updated Image guide.

  Migration from Experimental Responsive Images

  The experimental.responsiveImages flag has been removed, and all experimental image configuration options have been renamed to their final names.

  If you were using the experimental responsive images feature, you'll need to update your configuration:

  Remove the experimental flag

  export default defineConfig({

... (truncated)

Changelog

Sourced from astro's changelog.

5.10.0

Minor Changes

• #13917 e615216 Thanks @​ascorbic! - Adds a new priority attribute for Astro's image components.

  This change introduces a new priority option for the <Image /> and <Picture /> components, which automatically sets the loading, decoding, and fetchpriority attributes to their optimal values for above-the-fold images which should be loaded immediately.

  It is a boolean prop, and you can use the shorthand syntax by simply adding priority as a prop to the <Image /> or <Picture /> component. When set, it will apply the following attributes:

  • loading="eager"
  • decoding="sync"
  • fetchpriority="high"

  The individual attributes can still be set manually if you need to customize your images further.

  By default, the Astro <Image /> component generates <img> tags that lazy-load their content by setting loading="lazy" and decoding="async". This improves performance by deferring the loading of images that are not immediately visible in the viewport, and gives the best scores in performance audits like Lighthouse.

  The new priority attribute will override those defaults and automatically add the best settings for your high-priority assets.

  This option was previously available for experimental responsive images, but now it is a standard feature for all images.

  Usage

  <Image src="/path/to/image.jpg" alt="An example image" priority />

  [!Note] You should only use the priority option for images that are critical to the initial rendering of the page, and ideally only one image per page. This is often an image identified as the LCP element when running Lighthouse tests. Using it for too many images will lead to performance issues, as it forces the browser to load those images immediately, potentially blocking the rendering of other content.

• #13917 e615216 Thanks @​ascorbic! - The responsive images feature introduced behind a flag in v5.0.0 is no longer experimental and is available for general use.

  The new responsive images feature in Astro automatically generates optimized images for different screen sizes and resolutions, and applies the correct attributes to ensure that images are displayed correctly on all devices.

  Enable the image.responsiveStyles option in your Astro config. Then, set a layout attribute on any or component, or configure a default image.layout, for instantly responsive images with automatically generated srcset and sizes attributes based on the image's dimensions and the layout type.

  Displaying images correctly on the web can be challenging, and is one of the most common performance issues seen in sites. This new feature simplifies the most challenging part of the process: serving your site visitor an image optimized for their viewing experience, and for your website's performance.

  For full details, see the updated Image guide.

  Migration from Experimental Responsive Images

  The experimental.responsiveImages flag has been removed, and all experimental image configuration options have been renamed to their final names.

  If you were using the experimental responsive images feature, you'll need to update your configuration:

  Remove the experimental flag

... (truncated)

Commits

• 0ad80d9 [ci] release (#13958)
• 6517ddb [ci] format
• 3c04c1f feat: live content collections (#13685)
• d35f234 [ci] format
• e615216 feat: unflag responsive images (#13917)
• 468945a [ci] format
• 0a31d99 fix: actions typegen path (#13976)
• 304df34 fix(csp): types and validation issues (#13957)
• b951330 [ci] format
• fe8f61a fix: devtoolbar data unset (#13862)
• Additional commits viewable in compare view

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