It would be great if this plugin could remove absolute image URLs from images in block markup, either on export or via a separate button somewhere.

Currently, any images that are inserted into a template need to have their URLs manually changed to be relative to the theme directory in order for them to be successfully used outside of the build context (i.e. the local environment or dev environment where the site is being built).

For example, changing an image URL like this:

<!-- wp:cover {"url":"https://localsite.com/wp-content/uploads/2022/12/imagefile.png"...

To this:

<!-- wp:cover {"url":"<?php echo esc_url( get_stylesheet_directory_uri() ) . '/assets/images/imagefile.png'; ?>"...

The above solution would require the template file to be converted from HTML to PHP. It would be good to hear if there's a better way!