Blocks Export Import plugin allows you to import and export blocks as JSON in Gutenberg Block Editor.
Activating this plugin is just like any other plugin. If you’ve uploaded the plugin package to your server already, skip to step 5 below:
- Install using the WordPress built-in Plugin installer, or Extract the zip file and drop the contents in the wp-content/plugins/ directory of your WordPress installation.
- Activate the plugin through the ‘Plugins’ menu in WordPress.
- Go to Gutenberg editor and play around with the block.
You can check the changelog
here.