# Astro @astrojs/mdx@8.0.0

- Product: Astro (https://whatsnew.fyi/product/astro)
- Vendor: Astro
- Date: 2026-08-31
- Version: @astrojs/mdx@8.0.0
- Original notes: https://github.com/withastro/astro/releases/tag/%40astrojs/mdx%408.0.0
- Permalink: https://whatsnew.fyi/product/astro/releases/astrojs-mdx-8.0.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **changed** — Move MDX file processing to the Markdown processors
- **fixed** — Fix .mdx files still using markdown.processor when extendMarkdownConfig is false to use a clean default processor instead
- **added** — Add a warning when deprecated remarkPlugins, rehypePlugins, recmaPlugins and remarkRehype options are ignored because the Markdown processor does not run them

###### Major Changes

-   [#17262](https://github.com/withastro/astro/pull/17262) [`f8e9458`](https://github.com/withastro/astro/commit/f8e94585ab6c38e2702ee1e2e540858f72058a40) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Moves MDX file processing to the Markdown processors.

    '@astrojs/mdx' is still required to add MDX support to your project. However, it now delegates the MDX files processing to Markdown processors.

    #### What should I do?

    If you haven't explicitly installed a Markdown processor, you don't need to do anything.

    Otherwise, ensure that your configured Markdown processor uses the following version:

    -   `@astrojs/markdown-satteri` 0.4.0 or later if you use `satteri()`
    -   `@astrojs/markdown-remark` 7.3.0 or later if you use `unified()`

###### Patch Changes

-   [#17262](https://github.com/withastro/astro/pull/17262) [`f8e9458`](https://github.com/withastro/astro/commit/f8e94585ab6c38e2702ee1e2e540858f72058a40) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Fixes `.mdx` files still using `markdown.processor` when `extendMarkdownConfig` is `false`. They now use a clean default processor instead; pass `mdx({ processor })` to choose one explicitly.

-   [#17262](https://github.com/withastro/astro/pull/17262) [`f8e9458`](https://github.com/withastro/astro/commit/f8e94585ab6c38e2702ee1e2e540858f72058a40) Thanks [@Princesseuh](https://github.com/Princesseuh)! - Adds a warning when the deprecated `remarkPlugins`, `rehypePlugins`, `recmaPlugins` and `remarkRehype` options are ignored because your Markdown processor does not run them. They still apply when your processor is `unified()`, and were previously dropped silently otherwise.

-   Updated dependencies \[[`f8e9458`](https://github.com/withastro/astro/commit/f8e94585ab6c38e2702ee1e2e540858f72058a40), [`f8e9458`](https://github.com/withastro/astro/commit/f8e94585ab6c38e2702ee1e2e540858f72058a40)]:
    -   @astrojs/internal-helpers@0.11.0
    -   @astrojs/markdown-satteri@0.4.0