Markdown Block will be replaced on 15 September 2026

Written By SF.DIGITAL

4 September 2026

On 15 September, Squarespace is replacing the existing Markdown Block with a new version across Squarespace 7.0 and 7.1 websites.

The updated Markdown Block includes a revised editor, new heading controls, an improved link editor, and better handling of long code lines and URLs.

The most significant change affects custom JavaScript. New Markdown Blocks will no longer allow <script> elements. This closes a long-standing workaround that allowed JavaScript to be added through Markdown Blocks, including on Basic and legacy Personal plans where JavaScript is not otherwise supported.

Existing legacy Markdown Blocks are not replaced automatically and will continue to function for a while. Squarespace has not yet clarified how long legacy Markdown Blocks will continue to be supported.

SF.DIGITAL

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