Astro 5.4 introduces features like remote image optimization in Markdown, experimental responsive image support, and enhanced security for dev and preview servers. New RegExp support for Vercel ISR excludes allows flexible route exclusions, and new config helpers and build options offer easier programmatic use. Upgrade via `@astrojs/upgrade` CLI tool or manually.
Table of contents
Remote image optimization in MarkdownExperimental responsive image support in MarkdownAllowlist hosts for dev and preview serversRegExp support for Vercel ISR excludesNew config helpers and build optionsBug fixesThanks1 Comment
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