Meta Box Show Hide Addon GPL Overview:

Meta Box Show Hide is an extension for the Meta Box plugin, which helps developers to show/hide meta boxes by page template, post format, category, or custom taxonomy. This extension uses JavaScript to show/hide elements immediately and can combine conditions (include, exclude, the logical operator AND, OR) to create as many restrictions as you want.

Developers don’t need to rewrite any meta box definitions. Just add conditions for meta boxes for where to show or hide them, then other works will be done automatically. And no need to get stuck with writing custom PHP to check.

Meta Box Show Hide Addon GPL Features:

• Works in both classic editor and Gutenberg (block editor)
• Allows developers to show or hide meta boxes under conditions
• Can combine conditions using logical operator AND, OR
• Conditions (show/hide by):
  • Page templates
  • Post formats

• Categories
• Custom taxonomies (hierarchy taxonomies only)
• Parent page
• Input values, for example: show a meta box when selecting a value from dropdown, hide a meta box when checking a checkbox, etc.