Unlock Hidden Power: 6 Little-Known Ways to Master Custom Block Styles in WordPress

Method 1: add a block style via a JSON file (/styles folder) 

• Best for: Theme developers
• Where you would typically use it: Commonly in themes 
• Version requirements: WordPress 6.6 or higher with theme.json v3 

For theme developers, the most streamlined way to add custom block styles to a theme is to add a new file to the /styles folder. 

This method requires upgrading the theme.json schema to v3, which is only available in WordPress 6.6 and above. As a theme developer, you would either require your users to install the Gutenberg plugin or update the minimum requirement for your theme to WordPress 6.6 to ensure everything works as intended.

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