Astro release calendar: all versions, dates and updates

Updates CLI argument parsing

Fixes the image endpoint treating directories whose names differ only by letter case as being inside the build output directory on case-sensitive f...

Avoids attributing client-only components or scripts to unrelated pages importing astro:i18n by bounding top-level page graph traversal at virtual ...

Fixes astro dev status and other background server commands deleting the lock file of a running dev or preview server when run from a sandbox or as...

Allows astro add to configure tagged versions of official adapters

Allows astro add to configure tagged versions of official adapters

CSP no longer hashes empty children on external stylesheets and scripts, which was inserting the SHA-256 of the empty string into script-src and st...

Speeds up content sync with experimental.collectionStorage: "chunked" by computing each character's UTF-8 width from its code point instead of enco...

Preserves the last modified date of cached optimized images and incrementally restored build output when copying them into the build output on all ...

Adds a new --timings flag to astro build to help you find what slows down your builds

Fixes Astro.cache being undefined when a custom 404 or 500 page is rendered by the error handler, for example after a request to an API route with ...

Fixes a build error when a Markdown content collection entry loaded with glob({ deferRender: true }) has a layout frontmatter property. layout is n...

Fixes an intermittent dev server crash when using astro:actions inside a server island with adapters that use a pre-bundled SSR environment (e.g. @...

Updates astro add @astrojs/cloudflare@beta to install cf, scaffold cloudflare.config.ts, and generate types with cf

Allows integrations to control where Astro writes client, server, and prerender build output.

Adds a new container function called renderComponent(), which renders Astro components with inlined styles and scripts.

Fixes incremental builds repeatedly rendering unchanged pages when modules or compiled CSS reference bundled assets.

Refactors internal version handling to use a smaller, ESM-native dependency

Fixes <script>/<style> rendering in MDX so that only literal content (including content injected by remark/rehype plugins) is treated as trusted ma...

Fixes an error that prevented projects using astro:assets from starting or building

Adds --ignore-lock flag to astro preview, allowing multiple preview servers to run simultaneously on different ports. This is useful for E2E testin...

Fixes @astrojs/markdown-remark being pinned to an exact version.

Fixes importing .html files not being typed outside of .astro files

Updates the minimum supported version of Sharp to 0.35.4

Deserializes each route once when loading the SSR manifest

Fixes a bug where new FetchState(request) could fail in development when server dependencies were optimized

Fixes a bug where experimental_getFontFileURL() rejected valid font URLs when using the Cloudflare adapter

Fixes builds hanging when an image file is malformed

Fixes an issue where Astro could run out of memory when experimental.collectionStorage is set to chunked and there are multiple concurrent updates ...

Fixes component styles rendered from content entries remaining stale until a second save when an adapter uses Astro's fallback development environment

Fixes CSS hot module replacement after navigating between pages with ClientRouter

Adds the astro preview --background flag to start preview servers as background processes.

Fixes concurrent static builds failing to generate i18n rewrite fallbacks for dynamic routes

Fixes a bug where an error while finalizing a request could prevent a response from being sent

Fixes duplicate CSS files being emitted in server output when a prerendered page and a server-rendered page share the same styles (e.g. a shared la...

Fixes image optimization during astro build using too many parallel processes in CPU-limited containers. Builds now respect the container's CPU lim...

Updates dependency cookie to v2. Cookie values made entirely of URL-safe characters are no longer percent-encoded in Set-Cookie headers; encoded va...

Fixes encoded request paths being routed incorrectly when using domain-based i18n

Adds a new deferRender option to the glob() content loader

Fixes the first browser visit after astro dev starts triggering an immediate full page reload

Fixes astro preview --open not opening a browser when using an adapter with a custom preview entrypoint, such as @astrojs/cloudflare

Fixes CSS module scoped-name hash mismatch in astro dev when using vite.css.transformer: 'lightningcss' with content collections. Previously, a com...

Fixes a false deprecation warning for markdown.gfm and markdown.smartypants when using the Container API

Fixes an error that could occur after the dev server restarts when using an adapter such as @astrojs/cloudflare, where a request would fail with a ...

Ensures transition directive values are HTML-escaped when rendered on hydrated islands

Fixes a bug where an error thrown inside one route's getStaticPaths() would prevent other valid routes from being matched in dev mode

Updated dependencies

Fixes astro dev incorrectly starting in background mode for Warp terminal users. Hybrid environments like Warp are no longer treated as AI agents f...

Stabilizes route caching, removing the experimental.cache and experimental.routeRules flags and replacing them with the top-level cache and routeRu...

Makes 'jsx' the default value for compressHTML

Harden the limits on the number of decoding on the URL.

Makes Sätteri the default Markdown processor

Fixes getRelativeLocaleUrl, getAbsoluteLocaleUrl, and getAbsoluteLocaleUrlList to strip trailing slashes when trailingSlash: 'never' is configured

Fixes an issue where renaming an image file while the dev server is running triggers a build error. Now Astro correctly hot-reloads the image witho...

Removes the astro db, astro login, astro logout, astro link, and astro init CLI commands.

Fixes the experimental.logger destination not being used for the "Server listening on..." startup message. The logger is now resolved before the se...

Adds background dev server management for AI coding agents.

Prevents App.match() from throwing on request paths that contain an invalid percent-sequence.

Bumps devalue dependency to v5.8.1

Fixes a plugins is not iterable crash when using a pre-6.0 @astrojs/mdx alongside integrations (e.g. Starlight) that set markdown.remarkPlugins, ma...

Adds a new preserveBuildServerDir adapter feature

Fixes 404s for dynamically imported JS chunks when using an adapter with assetQueryParams (e.g. Vercel skew protection)

Populates styles in the SSR manifest for prerendered routes. Previously, prerendered routes had styles: [] in the manifest, making it impossible fo...

Fixes request body handling in the Node adapter when req.body is a Buffer, Uint8Array, or ArrayBuffer. Previously, binary body data was incorrectly...

Fixes markdown images with empty alt text () in content collections dropping the alt attribute entirely. The alt="" attribute is now ...