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Support partitioned cookies#15063

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Princesseuh merged 5 commits intowithastro:mainfrom
jmortlock:support-partitioned-cookies
Jan 28, 2026
Merged

Support partitioned cookies#15063
Princesseuh merged 5 commits intowithastro:mainfrom
jmortlock:support-partitioned-cookies

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@jmortlock jmortlock commented Dec 19, 2025

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changeset-bot bot commented Dec 19, 2025

🦋 Changeset detected

Latest commit: ac415ed

The changes in this PR will be included in the next version bump.

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

@github-actions github-actions bot added pkg: integration Related to any renderer integration (scope) pkg: astro Related to the core `astro` package (scope) labels Dec 19, 2025
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codspeed-hq bot commented Dec 19, 2025

Merging this PR will not alter performance

✅ 9 untouched benchmarks


Comparing jmortlock:support-partitioned-cookies (ac415ed) with main (8d84b30)

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Looks great, thank you very much!

@Princesseuh Princesseuh added this to the 5.17.0 milestone Jan 13, 2026
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Thank you for this cool feature @jmortlock ! This sounds like a great option to have.

I've left a comment below as an example to help you create our typical changeset to help promote the feature and make sure people understand what it is, and see how they can use it in their project right away.

As for documentation, you're right that we'll want a new API reference entry at https://docs.astro.build/en/reference/api-reference/#astrocookiesetoptions in a separate PR to the docs repo. (https://github.com/withastro/docs) You can follow the existing model there, but note that you'll also need to add a <Since /> component to show that this was added at a later date than the other options. You can find contributing docs for our API reference format (including yes, that weird blank line 😅 at https://contribute.docs.astro.build/reference/api-references/ if you need to check anything!)

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(It's only been a few days so no rush, but just a reminder that there's a Docs PR required for this PR, and a changeset comment to address!)

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Thanks for the reminder, changes as you requested have been completed, docs PR is here: withastro/docs#13075

Anything else let me know

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Approving for docs, and the related docs PR has also been approved! 🎉

@Princesseuh Princesseuh self-assigned this Jan 21, 2026
@Princesseuh Princesseuh merged commit 08e0fd7 into withastro:main Jan 28, 2026
25 of 26 checks passed
@astrobot-houston astrobot-houston mentioned this pull request Jan 28, 2026
dadezzz pushed a commit to dadezzz/ice-notes that referenced this pull request Feb 7, 2026
This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [astro](https://astro.build) ([source](https://github.com/withastro/astro/tree/HEAD/packages/astro)) | [`5.16.15` → `5.17.1`](https://renovatebot.com/diffs/npm/astro/5.16.15/5.17.1) | ![age](https://developer.mend.io/api/mc/badges/age/npm/astro/5.17.1?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/astro/5.16.15/5.17.1?slim=true) |

---

### Release Notes

<details>
<summary>withastro/astro (astro)</summary>

### [`v5.17.1`](https://github.com/withastro/astro/blob/HEAD/packages/astro/CHANGELOG.md#5171)

[Compare Source](https://github.com/withastro/astro/compare/[email protected]@5.17.1)

##### Patch Changes

- [#&#8203;15334](withastro/astro#15334) [`d715f1f`](withastro/astro@d715f1f) Thanks [@&#8203;florian-lefebvre](https://github.com/florian-lefebvre)! - **BREAKING CHANGE to the experimental Fonts API only**

  Removes the `getFontBuffer()` helper function exported from `astro:assets` when using the experimental Fonts API

  This experimental feature introduced in v15.6.13 ended up causing significant memory usage during build. This feature has been removed and will be reintroduced after further exploration and testing.

  If you were relying on this function, you can replicate the previous behavior manually:

  - On prerendered routes, read the file using `node:fs`
  - On server rendered routes, fetch files using URLs from `fontData` and `context.url`

### [`v5.17.0`](https://github.com/withastro/astro/blob/HEAD/packages/astro/CHANGELOG.md#5170)

[Compare Source](https://github.com/withastro/astro/compare/[email protected]@5.17.0)

##### Minor Changes

- [#&#8203;14932](withastro/astro#14932) [`b19d816`](withastro/astro@b19d816) Thanks [@&#8203;patrickarlt](https://github.com/patrickarlt)! - Adds support for returning a Promise from the `parser()` option of the `file()` loader

  This enables you to run asynchronous code such as fetching remote data or using async parsers when loading files with the Content Layer API.

  For example:

  ```js
  import { defineCollection } from 'astro:content';
  import { file } from 'astro/loaders';

  const blog = defineCollection({
    loader: file('src/data/blog.json', {
      parser: async (text) => {
        const data = JSON.parse(text);

        // Perform async operations like fetching additional data
        const enrichedData = await fetch(`https://api.example.com/enrich`, {
          method: 'POST',
          body: JSON.stringify(data),
        }).then((res) => res.json());

        return enrichedData;
      },
    }),
  });

  export const collections = { blog };
  ```

  See [the `parser()` reference documentation](https://docs.astro.build/en/reference/content-loader-reference/#parser) for more information.

- [#&#8203;15171](withastro/astro#15171) [`f220726`](withastro/astro@f220726) Thanks [@&#8203;mark-ignacio](https://github.com/mark-ignacio)! - Adds a new, optional `kernel` configuration option to select a resize algorithm in the Sharp image service

  By default, Sharp resizes images with the `lanczos3` kernel. This new config option allows you to set the default resizing algorithm to any resizing option supported by [Sharp](https://sharp.pixelplumbing.com/api-resize/#resize) (e.g. `linear`, `mks2021`).

  Kernel selection can produce quite noticeable differences depending on various characteristics of the source image - especially drawn art - so changing the kernel gives you more control over the appearance of images on your site:

  ```js
  export default defineConfig({
    image: {
      service: {
        entrypoint: 'astro/assets/services/sharp',
        config: {
          kernel: "mks2021"
        }
    }
  })
  ```

  This selection will apply to all images on your site, and is not yet configurable on a per-image basis. For more information, see [Sharps documentation on resizing images](https://sharp.pixelplumbing.com/api-resize/#resize).

- [#&#8203;15063](withastro/astro#15063) [`08e0fd7`](withastro/astro@08e0fd7) Thanks [@&#8203;jmortlock](https://github.com/jmortlock)! - Adds a new `partitioned` option when setting a cookie to allow creating partitioned cookies.

  [Partitioned cookies](https://developer.mozilla.org/en-US/docs/Web/Privacy/Guides/Privacy_sandbox/Partitioned_cookies) can only be read within the context of the top-level site on which they were set. This allows cross-site tracking to be blocked, while still enabling legitimate uses of third-party cookies.

  You can create a partitioned cookie by passing `partitioned: true` when setting a cookie. Note that partitioned cookies must also be set with `secure: true`:

  ```js
  Astro.cookies.set('my-cookie', 'value', {
    partitioned: true,
    secure: true,
  });
  ```

  For more information, see the [`AstroCookieSetOptions` API reference](https://docs.astro.build/en/reference/api-reference/#astrocookiesetoptions).

- [#&#8203;15022](withastro/astro#15022) [`f1fce0e`](withastro/astro@f1fce0e) Thanks [@&#8203;ascorbic](https://github.com/ascorbic)! - Adds a new `retainBody` option to the `glob()` loader to allow reducing the size of the data store.

  Currently, the `glob()` loader stores the raw body of each content file in the entry, in addition to the rendered HTML.

  The `retainBody` option defaults to `true`, but you can set it to `false` to prevent the raw body of content files from being stored in the data store. This significantly reduces the deployed size of the data store and helps avoid hitting size limits for sites with very large collections.

  The rendered body will still be available in the `entry.rendered.html` property for markdown files, and the `entry.filePath` property will still point to the original file.

  ```js
  import { defineCollection } from 'astro:content';
  import { glob } from 'astro/loaders';

  const blog = defineCollection({
    loader: glob({
      pattern: '**/*.md',
      base: './src/content/blog',
      retainBody: false,
    }),
  });
  ```

  When `retainBody` is `false`, `entry.body` will be `undefined` instead of containing the raw file contents.

- [#&#8203;15153](withastro/astro#15153) [`928529f`](withastro/astro@928529f) Thanks [@&#8203;jcayzac](https://github.com/jcayzac)! - Adds a new `background` property to the `<Image />` component.

  This optional property lets you pass a background color to flatten the image with. By default, Sharp uses a black background when flattening an image that is being converted to a format that does not support transparency (e.g. `jpeg`). Providing a value for `background` on an `<Image />` component, or passing it to the `getImage()` helper, will flatten images using that color instead.

  This is especially useful when the requested output format doesn't support an alpha channel (e.g. `jpeg`) and can't support transparent backgrounds.

  ```astro
  ---
  import { Image } from 'astro:assets';
  ---

  <Image
    src="/transparent.png"
    alt="A JPEG with a white background!"
    format="jpeg"
    background="#ffffff"
  />
  ```

  See more about this new property in [the image reference docs](https://docs.astro.build/en/reference/modules/astro-assets/#background)

- [#&#8203;15015](withastro/astro#15015) [`54f6006`](withastro/astro@54f6006) Thanks [@&#8203;tony](https://github.com/tony)! - Adds optional `placement` config option for the dev toolbar.

  You can now configure the default toolbar position (`'bottom-left'`, `'bottom-center'`, or `'bottom-right'`) via `devToolbar.placement` in your Astro config. This option is helpful for sites with UI elements (chat widgets, cookie banners) that are consistently obscured by the toolbar in the dev environment.

  You can set a project default that is consistent across environments (e.g. dev machines, browser instances, team members):

  ```js
  // astro.config.mjs
  export default defineConfig({
    devToolbar: {
      placement: 'bottom-left',
    },
  });
  ```

  User preferences from the toolbar UI (stored in `localStorage`) still take priority, so this setting can be overridden in individual situations as necessary.

### [`v5.16.16`](https://github.com/withastro/astro/blob/HEAD/packages/astro/CHANGELOG.md#51616)

[Compare Source](https://github.com/withastro/astro/compare/[email protected]@5.16.16)

##### Patch Changes

- [#&#8203;15281](withastro/astro#15281) [`a1b80c6`](withastro/astro@a1b80c6) Thanks [@&#8203;matthewp](https://github.com/matthewp)! - Ensures server island requests carry an encrypted component export identifier so they do not accidentally resolve to the wrong component.

- [#&#8203;15304](withastro/astro#15304) [`02ee3c7`](withastro/astro@02ee3c7) Thanks [@&#8203;cameronapak](https://github.com/cameronapak)! - Fix: Remove await from getActionResult example

- [#&#8203;15324](withastro/astro#15324) [`ab41c3e`](withastro/astro@ab41c3e) Thanks [@&#8203;Princesseuh](https://github.com/Princesseuh)! - Fixes an issue where certain unauthorized links could be rendered as clickable in the error overlay

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
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Co-authored-by: Renovate Bot <[email protected]>
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